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Central Midwest Gardening: Hollyhocks: "fungus" on leaves, in Central Illinois?

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Forum: Central Midwest GardeningReplies: 2, Views: 70
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Clinton, IL
(Zone 6a)

July 1, 2008
4:42 PM

Post #5187968

I have a beautiful stand of Old Fashioned Hollyhocks on my side yard, where they come up year after year. This is the FIRST year I've seen this curious, UGLY condition: bright yellow spot-blotches all over the leaves, and the undersides have parallel grey "fuzzy" (looked like spider egg sacs at first glance) ring-spots. On some, these are turning into HOLES. I'm not sure whether I have a pest eating through the leaves, a disease, or fungus, or what...?

We HAVE had a terribly rainy Spring in Central Illinois this year (2008); no flooding in my neighborhood, but we're close to areas where there has been a LOT. When the rains stopped and it got SUNNY and HOT, that'w when these turned up (in the past couple weeks)... Any ideas??
It does not seem to be hurting the overall plant or flowers, but you can SEE this blight from the STREET, and it's plain ugly and embarassing... ;-(


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(Zone 5b)

July 1, 2008
7:23 PM

Post #5188899

Hi Jipsi, I'm no expert, looks like a fungus to me. Topical fungicide could help, IF it is fungus.. Someone with more knowledge will reply, but this will bump the post back up to the top.. -B


Jasper Co., MO
(Zone 6b)

July 3, 2008
3:43 PM

Post #5198389

It like infection to your plant after raining then hot sunny day that will be like sunburn to me but it different grey spot I never seen any like this...

I only have powder mildew which is white...

I have no clue on gray spot maybe you can check on some forum I see in DG's...

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