Basil Downy Mildew Monitoring Records 2014

	A	B	C	D	E	F	G	H	I	J	K	L	Q	V	Z	AA
1	State (or country if not in US)	Date Symptoms Seen	Estimated Date Symptoms Started	Reporter Name	Reporter E-mail or other contact info	Location	Field, Greenhouse, or Garden	Plant and Planting Size	Severity	How Diagnosed	Confirmation	Additional Description and Comments
2	To enter a report, please go to new monitoring website at https://basil.meas.ncsu.edu/

3	Alabama	4/15/2014	4/1/2014	Cindy Martin	mail@tastefulgarden.com	Heflin, AL	Greenhouse	Genovese 4" pot, Thai (Siam Queen), Purple Ruffles, Lemon, Lime, Red Rubin, Mammoth	100%	visible, underside of leaves	compared to images online	Have been spraying Serenade, Organic Garden Fungicide no effective results on infected plants. Will try a new batch with spraying before infection occurs. Wet weather in spring and early summer. Lemon seems least affected, Purple harder to diagnose.
4	Alabama	10/20/2014	October	Kassie Conner	connekn@auburn.edu	Baldwin Co., AL	Greenhouse	Sweet basil	100%	Dark sporulation on underside of leaves observed with microscope	Auburn University Plant Diagnostic Lab	100% loss, all plants were destroyed, suspect the disease came in on seed.
5	Argentina	2/4/2014	beginning february	Roland Möhle	info.roco@gmx.net	Los Cardales, Buenos Aires	greenhouse	Genovese, planting size 10cm	0%	no symptoms till now (4.2.2014)		I am an organic farmer and I hope planting with minor density is the key to avoid peronospora
6	California	6/2/2014		Angela Madeiras	ammadeir@umass.edu	Watsonville, CA	container pot	6" pot, Nufar	severe	Dark sporulation on underside of leaves	Confirmed: visual observation	Sent to UMass by CA grower
7	California	6/3/2014	5/28/2014	Christina Smith	waterblue12@hotmail.com	Oceanside, CA	Field	Sweet Basil, 4ac	3% start	experience	lab	rotation of all reg. chems @2-3 day did not slow infection. Crpo cleaned to new buds with trash removed from fld; entire crop lost 7/2/2014	/d
8	California	7/21/2014$	7/1/2014	M. Bloxsom	mbloxsom@uci.edu	Irvine, CA	Community Garden	Sweet Basil, from seed	65% of leaves affected.	Observation	Online search confirms, taking leaves to the garden center for visual confirmation.		/d
9	California	8/20/2014	August?	Leah Barbata	absolutelyrubbishshop@gmail.com/	Burlingame, CA	Garden	1 sweet basil plant bought from Safeway and repotted in a larger container	The entire plant except for some new growth	Leaves turn yellow and fall off and on the back of all the leaves there is a dark mildew	Looks like all the photos posted for downy mildew	The basil plant started showing signs of disease very soon after buying it. It is exposed to full sun where the temperature is usually low 70s for a high and high 50s for a low. There is generally a large amount of dew every morning from the fog. Burlingame is sunny nearly year round, but the fog rolls in nearly every night and rolls out by usually 10am.				, you I BB y*
10	California	3/19/2015	March	Emily Millman	emilymillman@gmail.com	Los Angeles	Garden	Sweet Italian Basil	100%	Short black fuzz under the leaves consistent with disease discription and yellowing.	Same as photos	Purchased at a nursery in Sawtelle. Weather has been hot and dry with light breezes. It's not that humid/damp here. I never checked under the leaves until today, but I had noticed yellowing ever since I put it in the ground...just assumed it was being pouty about moving locations.
11	Canada	6/3/2014	5/26/2014	Shelley McCabe	shelleymccabe@yahoo.com	Toronto, ON	Garden planter box	Lime basil - 8"; Greek basil - 8"	Total loss of both plants. The lime basil was infected first (but not diagnosed), the Greek basil was just noticed today (about a week later).	black powder completely covering the undersides of the leaves on both plants. The first symptom in the lime basil was yellowing leaves.	Photos and this article. Confirmed based on photos by Meg McGrath.	Purchased plants when 3" tall from an organic nursery.		yv-	ea r,by now if bu+you
12	Canada	6/24/2014	6/17/2014	Beth McKinney	mckinney.beth@gmail.com	Toronto, ON	Garden planter pot	12" pot	entire plant affected	leaves turning yellow - underside of leaves dusty grey black.	compared to images and description on this website	lettuce leaf basil' was affected whereas 'genovese basil' was not affected even though they were planted side by side in the same pot. Update - June 30 - genovese basil now seriously affected as well - entire plant
13	Colorado	8/2014	7/2014	Tiffany Cooper	tiffany@isabellefarm.com	Lafayette	Field	60,000 plants grown from seed ad transplanted on plastic mulch with drip irrigation	90%	observavtion: the underside of the leaves had blk fuzzy mold at first. then yellow of the leaves	consultant	I grew two varieties of bail and planted in two successions Genovese basil and Nufar for organic commercial production. The 1st succession was hit hard by downy. the 2nd succession lasted a little longer as it was interplanted with eggplant, tomatoes and melons. The disease was on seen on these plants. Row cover worked on test plot and prevented the spores on 600 plants. Some OMRI sprays were applied at first observation that seemed to keep it from spreading. This was the 1st time DM was ever found on our farm.
14	Colorado	July 2014	Late July	Marge Moore	margemoore@hotmail.com	Fort Collins, CO	Home garden pots	Sweet basil - purchased seedlings, transplanted into large pots	80% of leaves	Observed yellowing leaves and saw dark gray dirt-like spotting on undersides of leaves; researched on internet	Compared to internet descriptions of disease	Seedlings were purchased from local store in early June - were green and healthy. Still ok after transplanting a couple weeks later. Kept in sunny spot. Disease symptoms began showing up after a very rainy, cloudy and cool few days (July 22-25); not typical for this region. Removed all affected leaves - washed thoroughly the least affected leaves to use for cooking since not toxic. Will see how plants do in sun again and see if plant store can recommend a treatment.
15	Colorado	June, July 2014	early June	Diane Schwemm	dbschwemm@gmail.com	Boulder, CO	Home gardenn pots	"Aroma 2" and other purchased seedlings, transplanted into large pots	80-90% of leaves	Observed yellowing leaves and saw dark gray dirt-like spotting on undersides of leaves; researched on internet	Compared to internet descriptions of disease	Seedlings were purchased from two local stores and were green and healthy until I transplanted them at different times during the summer. Disease symptoms begin showing up within a week. We are having a very damp, somewhat cool summer compared to what's typical for this region.
16	Colorado	June, July 2014	June	Sarah Kurtzs,wok. bv, new on t vb jvq, about buying h,	sarah_kurtz@comcast.net	Golden, CO	home garden; raised bed	Bought two sizes of pots in May and transplanted in May	90% of leaves	Observed unhealthy plants with discoloration of leaves and dusty appearance on the undersides that could be washed off, but only with difficulty	Compared to photos on internet	Plants were purchased from store in Lakewood
17	Connecticut	3/15/2014	5/1/2013	Andrea Johnson	annizoe@yahoo.com	Gaylordsville, CT	Home	Genovese, planting size 10cm	100%	Was infested last season out doors, reused soil that had sustained long term winter temps outside of under 20 degrees f.	multiple sources	Seedlings with only 2 sets of leaves became speckled and looked sunburned. Destroyed seedlings and dumped dirt. Last summer (Jun) CT had a very rainy and humid season, devastated crop (200 plants) reseeded, again seedlings infected, reseeded late July infected. Sprayed with bakingsoda/dish soap continuously for weeks with no result. Copper fungicide did not work once the disease had established. Obviously mold over winters in soil even after a very harsh winter. Have seen the same disease in local greenhouses when I went to resupply basil needs. HELP!
18	Connecticut	6/13/2014		Joan Allen	joan.allen@uconn.edu	Bloomfield & Manchester, CT	container pot	4" pot, sweet basil	moderate	Dark sporulation on underside of leaves	Confirmed: visual & microscope	Purchased at big box store garden centers.
19	Connecticut	7/1/2014		T Ulery	pechinski@att.net	Durham, CT	Garden	Italitn basil, 6 plants purchased from local nursery in spring	95%	First patches of yellowing appear eventually followed by blackened areas; underside has fuzzy mold matching pictures on internet	Visual observation and online research.	Only a small percentage of new leaves appear free of disease on visual inspection. Interestingly, plants have survived all season despite being severely affected by early summer.
20	Connecticut	7/9/2014	7/5/2014	Tony Adams	farmboyz@mac.com	Wethersfield, CT	garden	genovese 6 plants	all lower leaves	saw symptoms	went online saw photos. Confirmed based on photos by Meg McGrath.	I have been overhead watering. I will stop that. we've had much rain. If things dry out, maybe it can be controlled. The Thai basil and Greek basil are not effected.
21	Connecticut	7/14/2014	?	Toby Fischer	Tffischer@gmail.com	Bethany, CT	Field	Sweet Basil planted in clusters 3-4 plants every 12"	%30	Visual inspection at time of harvest	Symptoms match descriptions and photos
22	Connecticut	7/14/2014	7/11/2014	B Biales	bbiales@gmail.com	Middletown, CT	Container Pot	3 pots 9-14" 6-8 plants each	90%	Black mold covering entire underside of most leaves		I've not seen this issue before here. Not sure if it came with the plants? I have other single plants in flower boxes nearby that don't seem affected (yet). Found your site, and from description and pictures sure sounds like exactly what I have...
23	Connecticut	7/16/2014	6/25/2014	Barb Jennes	bjenneson@aol.com	Ridgefield, CT	Garden	Sweet basil - 8-10" at planting	2/3 of plants completely destroyed; others have some healthy branches	Plant deleafing; spores on undersides of leaves	Not yet professionally confirmed	Cat mint also severely affected with a similar fungal infection this year. Plants were well established (10+ years) and healthy until this year. Have also noticed similar sporing on first-growth leaves of buddleia bushes.
24	Connecticut	7/23/2014	Early June	B Cavallaro		Derby, CT	garden	sweet basil	75%	observation	online research	The plants started out beautifully, but then about 3 weeks ago we started noticing yellowing. It thought we might be over-watering. Then yesterday I noticed the black spores on the undersides of the leaves. They plants are a-goner. We're about to pull them ALL out. I would like to know what we should do next year, as I have read in some spots that planting basil in this same location next year may expose them to spores that will be in the soil already from this year.
25	Connecticut	8/13/2014	8/13/2014	VJ Brown	vjb.rmb@gmail.com	Avon, CT	Garden	group of 6 & 3	gp6=50%,gp3=10%	Same as above	Same as above
26	Connecticut	8/23/2014	8/16/2014	Sal Boemia	salboemia@gmail.com	Connecticut	Home outdoor herb garden	sweet basil 12 plants 10" spacing from seed	100%	heavy sooty substance on underside of leaves	compared with images online. Confirmed based on photos by Meg McGrath.	Purchased seeds from Home Depot. Plants were very healthy then leaves began to grow narrower with sides curling upward. Within a week the sooty substance was found on about 10% of the leaves which were removed. Leaves of all plants were infected 100% within 5 days.
27	Connecticut	6/2014	6/2014	Peter Frappier	pfrap@optonline.net	Watertown,CT	Garden	Sweet Italian Basil.Five pots with plants 6 to 8 inched tall	total loss then replanted the same in July and also total loss	researching symptoms on the internet	cpmpared with online images from Cornell report	I also tried Swett Thai basil and Greek basil and got similar results.. The plants were atrting to show mold symptomswithin 10 days
28	Connecticut	8/5/2014	7/15/2014	Michael F	michael.finiguerra@gmail.com	Branford, CT	Patio Garden, 2 floor	1 large pot	95% leaves, cut away infected ones	underside is covered in black mildew, some yellowing of leaves	compared to numerous photos	I noticed this last year as well, but it was at the end of the season and I just attributed it to something else. I do notice that it gets worse when it rains, and may have initiall appeared after a rain event. I did grow this year's basil in the same pot as last years. I will destroy the pot.
29	Connecticut	8/12/2014	3 weeks maybe-noticed only slight yellowing	N.Zenick	nzenick@gmail.com	Wethersfield, CT	Garden	Italian Large leaf, Nafur, Sweet Basil, one unamed basil variety, about 70 plants total. Plant size ranging anywhere from 6" to 30" tall without flowering tops.	90% affected- guessing early to mid stage. No dead or dying leaves yet, just partial yellowing with slightly moldy undersides.	Visual sighting of yellowing leaves and moldy undersides	pictures on this and other websites today	First noticed on individual potted plants last year, end of season, thought nothing other than an isolated instance. only 3 plants infected and all dirt disposed of. Never researched-garden plants survived-no symptoms. This year, 2 sucessful harvests-all garden grown plants. 3rd harvest today revealed yellowing leaves with greyish mildewy substance on the bottoms. Harvests all from the same plants. Most all plants seem to be affected in one way or another. New plant growth seems to be unaffected thus far, with the more mature leaves showing the plight.Even the more sparsly planted basil plants with much better circulation showing the signs of this disease. All plants purchased from local nurseries and Lowes. This mildew appears to be an equal opportunity infector. Overspraying is the primary watering method. I have never seen this to this extent.
30	Delaware	6/12/2014	after 6/7	Sharon Vinton	svinton@itscommonwealth.com	Wilmington, DE	container pot	18" pot, 12" plant	severe	leaves starting to yellow, gray mildew on underside	visual	raining and extremely humid for the past 3 days
31	Delaware	Mid/Late July	Same	Mike Ferrier, Jr.	mferrieri@comcast.net	Wilmington, DE.	Garden	Genovese 4 plants	2 destroyed, 1 infected, 1 ok	Yellow leaves, mildew on underside of leaves	Dept of Ag. and Online photos	Started from seed from Italy
32	Delaware, New Castle County	6/17/2014	Unknown	Nancy Gregory	ngregory@udel.edu	Newark, DE	Home garden	two plants	Unknown	UD Diagnostic Clinic	Confirmed: Microscopic	Purchased at Home Depot in Newark, DE
33	Delaware, Sussex County	6/17/2014	6/5/2014	Nancy Gregory	ngregory@udel.edu	Greenwood, DE	Garden Center	8 inch pots, purchased as six 50 plant trays	75% of plants, moderate	Sent to UD Diagnostic Clinic	Confirmed: Microscopic	From large cell pack herb supplier in MD, plans to contact
34	Florida	8/1/2012	May	Jackie Kellogg	j_gross_Kellogg@hotmail.com	Key Biscayne, FL	Large Garden	Began with Italia, now every variety, lemon, thai, cinnamon, opal	100%	Identical to all images depicting basil "blight"		Only use now to attract pollinators. Thinking about harvesting for compost and starting over again with controlled observation.
35	Florida	3/5/2014	3/1/2014	S. Zhang	szhang0007@ufl.edu	Homestead, FL	garden	Sweet basil, 10''	40%	profuse sporulation on leaves	symptoms and examined under a microscope	A professor brought he basil plants to me for diagnosis- chlorosis was seen on upper side of leaves and profuse sporulation occurred on bottom side.
36	Florida	5/4/2014	4/30/2014	AH	arella.hordyk@gmail.com	New Port Richey, FL	garden	Genovese, 12"	Severe	Mildew visible on underside of leaves, tops yellowing		Back garden infected severely, while front garden exhibits no visible symptoms (as of yet).
37	Florida	5/14/2014	4/1/2014	C. Englert	cyenglert@gmail.com	Zephyrhills, FL	Garden	Sweet Basil, 9"	Severe	Black dusk underleaves	Pictures
38	Florida	5/25/2014	5/20/2014	S. Palau	ualapvs@gmail.com	Sarasota, FL	Earth Box	Sweet basil - 5 plants2 feet high	Total loss of plantings	Black mildew on underside of leaves.	Photos and this article	All were doing very well, on one plant the leaves started looking yellowed. Within one week all the rest of plants were affected. They all declined rapidly.
39	Florida	5/30/2014	5/30/2014	Noel	noelmunson@gmail.com	Tallahassee, FL	patio	sweet basil and columnar basil	severe	Black and grey sporation on underside of leaves. Yellowing and necrosis of leaf tops	Compared to images and info online	Total loss of sweet basil (and Genovese). Columnar basil varieties are far less susceptible, but are also infected. Heat and drought stress make the problem worse. No plants were grown from seed. Sweet and Genovese basil were purchased from Lowe's, and I suspect the large suppliers for their plants are spreading this disease.
40	Florida	5/31/2014	5/15/2014	carol ronci	carolronci@hotmail.com	Palm Coast, FL	Garden	12"	total loss of plantings	Black mildew on underside of leaves.	photos on internet	Plants were doing so well, I had 2 harvests for pesto, I thought the black on the bottom of the leaf was soil that splashed up, but when I was washing the second harvest, it was difficult to remove. Within 2 weeks, all leaves were affected and had to be destroyed. (tops of leaves till looked perfect!)
41	Florida	7/9/2014	7/1/2014	Stacey	Staceykast@hotmail.com	Riverview, FL	Screened patio	10" sweet basil	75	Visible	Compared to images and info online	Used fungicide, wiped and sprayed leaves, removed bad leaves and placed in sun. Will throw away. Worried will affect my scallions/parsley/lettuce (all planted in earth box).
42	Florida	3/3/2015	February	Dave Pollock	dave@davemcbride.com	Boynton Beach, FL	Garden	Sweet Italian Basil-large planter	100%	Blackish powerdery covering on underside of leaves		Purchased at Home Depot and a local farmer's market
43	Georgia	6/2/2014	4/14/2014	Jean Williams-Woodward	jwoodwar@uga.edu	Bogart, GA	Greenhouse	Sweet Basil, 6-inch pots	80% of crop	visible sporulation on leaves	confirmed in UGA disease clinic	This was the 3rd crop for the grower since March-April and all became infected. He discarded all previous crops. I've seen the disease every year for at least 4 years in GA in hydroponic and greenhouse production, garden centers, and in landscapes/gardens.
44	Georgia	6/26/2014	6/15/2014	Chris Scimone	christopher.scimone@gmail.com	Atlanta	Garden, Earthbox	3 sweet, 2 mammoth	30% leaves showing some mildew activity	looked like burn; checked underside of leaves and found the problem.	put infected leaves in moist bag, mildew spread heavily over two nights	mammoth seems more resistant thant sweet basil so far
45	Georgia	7/5/2014	6/28/2014	Tayler King	taylerking@gmail.com	Athens	Garden	Sweet and Mammoth 4 each	80%	symptoms match downy completely	Google images for "basil fungus"	planted from seeds kept from last year
46	Georgia	7/7/2014	7/2014	M Callenbach	mcallenbach@bellsouth.net	Roswell, GA	Garden	Genovese basil started from seed, 24 plants	100%	Yellowing leaves, grayish fuzz underside of leaves	Compared symptoms on my basil to online photos of downy mildew	I started spraying Actinovate in July, but it was too late for effective control.
47	Georgia	7/20/2014	Mid July			Savannah, GA	Greenhouse	Sweet basil bought at Whole Foods in 6" pot; transplanted in 12" pot and placed on patio	Widespread spores on underside of leaves; some leaves yellowing; some leaves look chewed; have seen tiny grasshopper-looking bugs on leaves	Observation		Plant looked very healthy and strong and was a very full, large plant in a 6" pot when purchased around the 1st of July from Whole Foods. The label said it was from a local farm. I transplanted it in a 12" pot and placed on patio. It did well for a week or two and then I noticed the leaves were changing. I thought I may have over- watered, as I am a very new gardener, but after searching online and seeing the description and photos of downy mildew, I am certain that's what it is.
48	Georgia	8/1/2014	late June	Jody DiPasquale	jodydipasquale@gmail.com	auburn Ga	garden and container	genovese, from seed, 4-5' tall	90%	saw a posting, observed, yellowing leaves and powdery on undersides	looks like pictures on internet	started from seed early spring, March, all was fine till some humid wet days, followed by cooling off. My garden basil is very advanced, the pots are just developing.
49	Georgia, Dekalb Co.	7/21/2014	7/10/2014	Laurie Tynor	ltynor@gmail.com	Atlanta, GA	Garden	Genovese basil, 4-5"	90%	Black spores underside of leaves.	comparison with pics online	Started as a little yellowing at the base of one plant. Within 2 weeks had spread to 3 more and all 4 plants had cloudy yellow leaves to the top. Took 3 weeks to diagnose because I thought it was a fertilizing issue in the beginning. Plants bought from home depot. Planted in a community garden area, and several other plots in the garden also have infected basil plants.
50	Grand Cayman	4/9/2014	about 2 wks earlier	Meg McGrath	mtm3@cornell.edu	2 locations	field + greenhouse	2 small plantings, sweet basil, also other types in the field planting where there were about 100 plants.	less than 5%	spores visible to the unaided eye, confirmed microscopically	confirmed	The few symptoms seen looked new. Another grower reported having DM last fall during the rainy period. A very few leaves in his planting had yellow sections resembling DM, but no spores were seen even after incubaitng leaves on damp paper towel in plastic bag.
51	Hawaii	6/10/2014	5/20/2014	Amy Teves	amyeteves@hotmail.com	Mililani, Hawaii	field + greenhouse	8 inch Thai basil	80%	visible sporulation on leaves		No basil planted since 2011, March 2014 planted 2 sweet basil, plants clean. Thai basil planted 4/24/14. Early May noticed plants at local Walmart <1 mile away being sold with downy mildew symptoms. 2 wks after rain, noticed yellowing between leaf margins and sporulation on 2 Thai basil.
52	Illinois	6/14/2014	5/14/2014	Han Nguyen	hanseldee@gmail.com	Chicago	container pot	Genovese 4" pot	moderate	Visible	visual	Bought from local Home Depot.
53	Illinois	6/14/2014	5/15/2014	Amanda Morris	amanda.morris@gmail.com	Oak Park, IL	Garden	Genovese, 4 inch pot	70%	Visible	Compared to images online	Purchased at either Home Depot in Chicago or local green store in Oak Park, IL. I thought it was cold damage at first and ignored it. Pulled the basil this weekend after realizing what it was. Other plants purchased separately don't seem to be infected yet.
54	Illinois	6/27/2014	?	A. Sutter	2wapiti@sbcglobal.net	Chicago, IL	Container pot	Sweet	50%	Yellow leaves and grey/brown mildew on undersides of leaves. Have photos	Looks like leaves in website photos	Purchased at Home Depot or other garden center
55	Illinois	7/1/2014	6/15/2014	Margaret Silliker	msillike@depaul.edu	Chicago, IL	planter box	sweet basil	75% jumped from plant to plant	I have a dissecting scope, the coarse hyphae and spores are the same as the online pictures	based on online photos
56	Illinois	7/1/2014	Unknown	Joseph Reilly	palbert22@gmail.com	Dekalb, IL	Container pot	Genovese	100%	Leaf undersides covered as well plants looks malnourished.	Compared with images and descriptions found online.	Purchased at Lowe's
57	Illinois	7/1/2014	6/25/2014	Robyn Vickers	robynv@gmail.com	Oswego, IL	contained pot and garden	sweet basil	75% of leaves; 10 plants affected	leaves were yellowing, found fungus on bottom of them during latest harvest	various state extension websites and photos	purchased at Home Depot
58	Illinois	7/21/2014	6/20/2014	J Harrington	jharrington@msn.com	Mount Prospect, IL	Garden	Sweet basil, 8-10", Genovese basil, 8-10"	One or two plants have leaves turning brown, many more have spores under leaves	Dying leaves, spots on undersides	online search; my plants match all the pictures I find of Basil Downy Mildew	Thai basil, lemon & lime basil immediately adjacent are less affected. Most were transplanted from various sources but some Genovese from seed. First sign was spores on leaves of a large-leafed, unidentified variety.
59	Illinois	7/26/2014	7/10/2014	Mike Longo	mjlongo5@gmail.com	Geneva, IL	Garden, seeds from Burpee "San Remo" variety	4 large plants - two are have 95% investation the other two are farther away and are about 50% covered. Just treated with copper sulfate solution.	4 large plants - two are have 95% investation the other two are farther away and are about 50% covered. Just treated with copper sulfate solution.	dark spots or ash like colored on undersides, tops are yellow.	on-line sources like this one.
60	Illinois	8/6/2014
61	Illinois	8/8/2014	one month ago	EJ Rebman	namberl@comcast.net	Rockford, IL	Garden	all basil plants	100%	Brown fuzzy fungus under side	same as photos. Confirmed based on photos by Meg McGrath.	Purchased at Lowes early June (couldn't find any basil plants at local nurseries or garden centers). Had same problem 2013 growing season with plants purchased from local garden center.
62	Illinois	8/29/2014	late July	L. Kamenitsa	lynn.kamenitsa@gmail.com	Oak Park, IL	Patio containers	Multiple plants from multiple sources; Genovese and sweet basil. All originally 4" pots	100%	Poor plant health, yellowing leaves and dropping leaves then saw black substance on underside of leaves.	plants match web site photos	Unable to determine whether all plants from different sources were affected when purchased or whether mildew was passed from pot to pot due to close proximity. Now suspect that poor health of other plants as early as mid-July may have been this was well.
63	Illinois	6/18/2104	^-10-2014	D Lee	dlee@adams.net	Quincy, IL	garden	sweet basil intially	100%	U of I Extension	online photos and desriptions
64	Illinois	7/10-7/17	7/10/2014	Zack Grant	zgrant2@illinois.edu	Urbana, IL Sustainable Student Farm	Field and Greenhouse	(2) 200 ft beds	90%	Gray Spore ID	IPM Lab at University	Field progressed faster than in our high tunnels. We got signiifcant harvests before onset. Combined high tunnel and field harvests from 5/23-7/17 when sporing was evident. Did use Double Nickle 55 in semi-regular spray schedule. Usually before rains. Very wet early summer. 13" of rain from June-July.
65	Illinois	Early July, may have been present earlier	Late June?	John Randolph	jwr@illinois.edu	Champaign, IL	I started my own basil from seed purchased from Fedco, a Maine based co-op. But I have heard about the disease being present around here in Illinois, so I would not necessarily blame the seed (or the excellent producer)	interplanted herb in vegetable garden	eventual yellowing and loss of plant (not death, per se, but no longer usable); all plants in garden (ca. 25 of them) affected	comparison to website pictures; I heard about this problem on a podcast and was hoping I wouldn't see it. Alas.	Matches pictures.	We've had a lot of rain here and cooler weather. Also, my garden is probably overplanted (not enough circulation), especially given the wetness. But plants in beds not overplanted were also affected.
66	Illinois				gziegler@michells.com	Champaign, IL	4" pots	4" pots w/multiple plants, Genovese and Thai, from 2 different retail sources,appeared clean and healthy when purchased on 6/6	90% + foliage drop, only newest shoot tips remain	looked like sunburn or fertilizer burn; checked underside of leaves and found the problem	Had heard of the issue somewhere previously, and how it was similar to downy mildew on impatiens walleriana.	Grafted plants of Basil Aristotle type (aka Savour & Longfoot from Hishtil) and tree form Greek Columnar plants (in ground, but within a few feet of the diseased potted plants) have not shown any symptoms to date.
67	Illinois (northern)	6/19/2014	5/25/2014	C		Cary, IL	Greenhouse	Sweet bail, seedling	100%	Visible gray sporulation on undersides of leaves	Compared to online images	From farmer's market, greenhouse at a community college
68	Indiana	7/3/2014		Juliet Minton	juliet.minton@gmail.com	West Lafayette	3 repotted plants	sweet basil	100%	Leaves are pale and yellow, undersides have dusty grey coating	googled "basil mildew"	plants purchased at Meijer
69	Indiana	8/8/2014	yesterday	Ron Moore	ron9114@gmail.com	Indianapolis	deck pots	all basil plants	100%	Brown fungus on underside	same as photos	Grown from seed in my "greenhouse" and transplanted.
70	Indiana	8/8/2014	8/1/2014	Liz Maynard	emaynard@purdue.edu	Wanatah, IN	Field	sweet basil from seeds supplied for sentinel plot, 30 plants	5%	yellow areas of leaf, sporulation on underside	photo sent. Confirmed based on photos by Meg McGrath.	By 8/22 planting of 30 plants are close to 90% severity. One atypical large-leaved plant does not appear to have any symptoms.
71	Indiana	8/11/2014	3 weeks	Lisa Kosanke	lkosanke@gmail.com	Indianapolis, IN	garden	sweet basil, about 130 plants	90%	pale leaves, black spots/streaks, grey moldy underside	Pictures on your website and others	Grew about 90% from seed (Emily) and 10% got from Lowes. Very wet, humid summer. Unprecedented cool nights and hot (but not super hot) days. Had this problem toward the end of summer last year (mid-September.) Trying to control with fungicide but will have to start pulling...today! Some not as bad as others.
72	Iowa	7/26/2014	after 7/22/14	P. Budelier	pbudelier@gmail.com	Iowa City, IA	Containers in elevated garden	One dozen 4" Sweet Genovese Basil seedlings placed into 12" containers on 5/17/14. Plants at 18" by mid-July.	20% worsening to 40% by 7/28. Foliage drop beginning.	As in published guides, dorsal yellowing and ventral sporulation delimited by veins. Necroses moving from brown to black.	This and other sites; experience.	All affected plants in western end of elevated herb garden. Symptoms appeared after a cool, rainy week. Additional Sweet Basil plants on eastern end of garden starting to show DM symptoms after a day of strong western wind. Containers of Thai and Purple basil in same garden are still healthy. We also grow basil in our vegetable garden, which is downhill and upwind of the container garden. The in-ground plants show no signs of DM and were heavily misted with neem this evening (7/28).
73	Iowa	9/1/2014	early July 2014	Jessie Liebenguth	jlieb@iastate.edu	Ames, IA	Garden	Genovese, serrated, dark red, (from seed, planted out from 1801) 'Amethyst Improved' purple (grown from seed, planted out from 1801), Sweet Italian Large Leaf (purchased from Grad Student Vegetable sale, 4.5" pot)	almost all plants entirely infected by the time we diagnosed. Defoliated from top 4 inches down.	Leaf loss, spots, poor plant performance and vigor	PIDC clinic, Iowa State University, Ames, IA	Amethyst Improved' showed first signs, wrote that off as not "improved." Emails from PIDC employees and a write-up in an Extension newsletter caused us to take samples from almost all basil in the garden in mid-September. Confirmed in all of those. Volunteer holy basil not affected, two vegetative types in trials seem ok, but removed out of abundance of caution. Seeds came from different sources. Sweet Italian Large Leaf did not grow in our greenhouse at all with other seedlings and are planted 20+ feet away from in-house grown plants.
74	Iowa	Mid July 2014	Mid July 2014	Amy Plymat	APlymat@msn.com	Johnston, Iowa	Gardens, several locations around a one acre property	Genovese Sweet Basil plants, 70 plants in 3 different areas	100% loss over time, unable to find any decent plant material to pick	Leaves were yellowing, black spores on the bottoms of the leaves whether yellow or green. Plant growth retarded	Matches photos online	I had suspected that the problem came from an area of peony plants that had developed black foliage that was near by.
75	Iowa	Mid Sept 2014	late Aug 2014	A. West	westa2@iastate.edu	Iowa	garden	unknown; started from unknown seed packet	moderate; able to harvest early	client had shown son who was a plant pathologist		logging the reports that I have heard from Iowa
76	Kansas	8/12/2014	3 weeks	John Exdell	jbex@ksu.edu	Manhattan, KS	garden	Genovese	90%	smudge on leaf underside, yellowing, loss of flavor	pictures
77	Kansas	8/22/2014		Megan Kennelly	kennelly@ksu.edu	KSU diagnostic lab. GH is in NE Kansas	greenhouse	sweet basil		microscope
78	Kansas	11/7/2014	mid October	Megan Kennelly	kennelly@ksu.edu	Sedgwick County, KS	commercial high tunnel				Microscopic observation at KSU diagnostic lab
79	Kentucky	6/4/2014	5/28/2014	Julie Beale	jbeale@uky.edu	Lexington, Ky	Garden	Unknown	Intense sporulation on sample submitted to Diagnostic lab (two leaves only)	Visible; confirmed via microscopy	confirmed
80	Louisiana	6/25/2014	6/23/2014	Melanie Lewis Ivey	mivey@agcenter.lsu.edu	Baton Rouge, East Baton Rouge Parish	field	Nufar, Italian large leaf, 60 ft row of each	40-50% over the entire row	microscopy, observed conidiophores and sporangia	microscopy, observed conidiophores and sporangia	Variety trial, only rep 3 of each variety with symptoms
81	Louisiana	10/1/2014	possibly late August	Melanie Lewis Ivey	mivey@agcenter.lsu.edu	Husser, LA	Commercial field	Genovese, transplants sourced from Stelz nursery, 25 plants	100% incidence, 50% severity	visualization of spores	light microscopy, no incubation
82	Louisiana	10/3/2014	9/29/2014	Melanie Lewis Ivey	mivey@agcenter.lsu.edu	Baton Rouge, LA	sentinel plot	genovese, 12 plants	25% incidence, 15% severity	visualization of spores	light microscopy, no incubation	Plants were planted in a raised bed near the University greenhouses in mid June. This is the first time I have seen DM symptoms on these plants.
83	Maine	6/1/2014	5/15/2014	Chas gill	kffn@comcast.net	Bowdoinham,maine	Greenhouse	Genoese,Cuban,Siam queen,sweet dani,red Rosie. All in 4 inch pots	Crop loss 100%	Chlorosis observed. Spores underside	Confirmed based on photos by Meg McGrath.	Going to try zero-tol
84	Maine	7/26/2014		Elizabeth Chen	elizabeth@chenconsulting.com	Bar Harbor, ME	community garden	Italian basil, not sure which variety, might be Nufar. Also on Thai basil and Cinnamon basil but less severe.	60%	Saw smdugy black soot on the undersides of leaves, mostly at the bottom of plant. First thought it might be dirt splashed up on leaves. Lots of yellowing of leaves and leaf drop. New growth still green.	Online reading	Seedlings were grown by local nursery, seeds from Johnny's.
85	Maine	9/1/2014	8/15/2014	Bruce Watt	Bruce.watt@maine.edu	Bangor, ME	Field	475 plants	75-80% of plants	Sporangia obvious on leaf underside	Microscopic examination
86	Maryland	8/20/2013	early August	R.Palmer	rodg@verizon.net	Arnold, MD	Garden (Deck)	Genovese Sweet Basil. 2, 8" plants purchased from local food store.	100%	Black/grey mold observed on most leaves on both plants. Researched online.	compared with online images in Cornell article on basil diseases	These plants were planted in a container that had 2 previous plants that were removed after they had been harvested to exhaustion. Originall plants that were planted in early Spring were not infected.
87	Maryland	5/1/2014	5/1/2014	also seen in Cabin John, Maryland	suzi@bowensvillefarm.com	Prince Frederick, MD	Greenhouse	Mostly Sweet/Genovese, but has also appeared in other varieties. 98 plugs, 4"	70-80%	Visual comparison with online guides		I think it came in some infected cinnamon basil seed? But, now it is persistant. Also hearing customer reports of potential incidences in garden plantings with plants not purchased from me. Has caused significant crop loss.
88	Maryland	6/14/2014	6/7/2014?		kth.marshall@gmail.com	Anne Arundel Co. MD	Field, Organic Vegetable Farm	Genovese, Superbo and Italian Large Leaf. Planted in black plastic 3 rows 8 inch spacing in row.	100% of first outdoor planting	Spores on undersides of leaves. Consulted with another grower who told us about the fairly recent emergence of Downy Mildew in basil. Spores were identical to pictures shown.		On the date we noticed the problem we harvested the basil for market. The sporulation worsened as the basil was stored in a 50degree walk-in cooler. 1 day after harvest at market basil didn't look great. 2 days after harvest basil at market looked bad. Forced to pull out crop on 6/23. We have yet to see symptoms on later succession plantings (which are planted in different areas of the farm). We have yet to see any indications of Downy Mildew on Thai, Lemon, or Rosie basil.
89	Maryland	6/17/2014	6/10/2014?	Terri		Greenbelt, MD	garden	Genovese, sweet	70%	visible, underside and yellowing	compared to images online	Purchased at farmer's market
90	Maryland	6/30/2014	6/1/2014	M. Grant	Melg133@gmail.com	Easton, MD	Garden	24" Bonnie Sweet Basil	95%	Visible	Identical to photos on this site	Will be applying serenade. Tomatoes nearby also suffering from possible early blight.
91	Maryland	7/17/2014	mid july			Ellicott City MD	garden	sweet basil	90%	visible	onlime research	visible spores underneath leaves. leaves turning yellow and black spots. Plants look exactly like pictures on this website
92	Maryland	7/22/2014	7/1/2014	K.Pesce	katie.pesce@gmail.com	Rockville, MD	Garden	Sweet Basil, 16 inches	100%	Observation	Online images and articles	The plant had an abundance of leaves and seemed to be thrieving. I have Basil planted in two different areas about 50 feet apart. One is in the front yard. One is in the back yard. Both plants have mildew.
93	Maryland	7/26/2014	July	M Benenati	benenatiml@gmail.com	Damascus	garden	Genovese - 12-18"	80% of leaves	Noticed powdery mildew on leaf undersides of not yet wilted leaves, found symptoms online	matched pictures and description on line and from Univ of MD handout	Grew plants from seed purchased in 2013. No problem with plants grown in 2013 from same seed packet. All current plants seem to be growing well except for yellowing and some spored so may be in early stages?
94	Maryland	7/28/2014	7/21/2014	B Belas	belas@umbc.edu	Catonsville, MD	garden	Genovese 20" tall	95%	yellowing leaves, grey fuzzy mildew on underside of leaves	Examined leaf underside with jewelers loupe and compared with online images	Cut back infected areas on all plants. Applied micronized sulfur in water to leaves in hopes of rescuing plants and to encourage new leaf production
95	Maryland	7/31/2014	7/13/2014	Sara V	svia@umd.edu	Ellicott City, MD	Garden	Superbo, 18 plants	100%	yellowing, dark areas on backs of leaves that could be washed off	photos on internet	Have not seen this before in my garden. It has been a wet year. All watering has been done from below. Grown in full sun, good ventilation.
96	Maryland	8/1/2014	7/21/2014	Jenny Kaurinki	Jennykaurinki@yahoo.com.com	Baltimore	Community microfarm	Genovese variety	80% of plants, bottom leaves affected	Visual observation of yellowing leaves and dark mildewy on leave undersides	Had it last year and read advisory from U MD Extension	Will remove affected leaves and treat with neem oil
97	Maryland	8/1/2014	7/15/2014	Massey Rausch	Massey1137@gmail.com	Solomons, MD	Garden	Sweet Basil, 10"	70%	Yellowed leaves. Visible ores. Sudden onset.	Multiple sources.	The onset was sudden and severe.
98	Maryland	8/7/2014		Vicki Keeney	vlkeeney1@aol.com	Potomac, MD	Raised Bed Gardens (3) and 1 pot	large and small plants. all sweet basil plants affected. also attacked thai basil plant	90% - cut leaves off left only the tiny new leaves	underside of leaves are black, some of the leaves are turning yellow, losing color. Plants were so healthy before being struck	google search and spoke with MD extension service previously.	seeds purchased at local nursery. Had it last year for the first time. This year - old gardens are dormant. Started ALL NEW raised beds with fresh compost/square foot garden mixture. I have no idea where it came from this year - 10 plants in 3 gardens and one pot with several plants - all were healthy with huge green leaves - suddenly all became infected. very frustrated. treating with Neem oil - hope it helps. For next year is there a way to assure the seeds are free from this? I have been online shopping for seeds on reputable safe-seed sites and would appreciate any guidance
99	Maryland	8/8/2014	mid-July	Joanne	jmiprn@aol.com	Frederick, MD	garden	all leaf basil plants	80%	yellowing leaves with gray powder on underside	Online photos and descriptions.	purchased a few plants at local grocery store in spring; most from seeds. Saw this last year, too, a bit, but didn't know what it was. I thought I had planted too densely or that problem was from rain (we've had enough most of this year) or lack of nutrients. I'd like to see instructions about how to treat or prevent.
100	Maryland	8/8/2014	7/1/2014	Richard Schlecht	schlecht2@verizon.net	Frederick MD	home backyard garden	ten Genoese basil plants from various sources (Not grown from seed)	total.	Matched leaves against online photos	Visual observation and online research.	Yanked all plants 8/30. Damage was total.