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| What is this on my Tiarella? Can I just cut off the infected foilage and will it regrow? Is it nematode damage or something else?
Each brown speck has a yellow "halo" around it. These are all over most of the leaves on this plant.
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Follow-Up Postings:
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- Posted by ken_adrian z5 (My Page) on Thu, Jun 2, 11 at 15:37
| just some insult to the tissue resulting in browning.. windstorm.. hail.... as you snip them out.. see if you can tell if they were only the first leaves out .... if so.. frost/freeze is also a possibility ... sometimes when this type of damage is very slight ... it wont show or burn.. until the first couple real hot days... did you hit near 90 over last weekend??? .. like we did?? .. did it mysteriously show thereafter??? i see a lot of clean leaves there ... so i r/out disease.. as it wouldnt be that selective ... or if it was a bug.. the bug could be long gone... since newer leaves are clean ... snip and relax ken |
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| I have snipped and wil relax! We did have a couple of 90 degree days here. It seems to be mostly the older leaves and all new leaves are fine. Come to think of it we did have a lot of wind yesterday but it would show on other plants then. |
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- Posted by ken_adrian z5 (My Page) on Thu, Jun 2, 11 at 17:19
| naw.. the insult or injury was weeks ago .... and 'seeing' it was caused by the hot temps ... perhaps this is a clearer example ... bang your leg ... a few days later.. a horrible bruise ... the yellow tissue is a sort of bruise from whatever happened to injure the tissue .... any hail storms a few weeks back???? are these wintered over leaves???? regardless.. you should be all set ... crack a cold one for me .... ken |
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| It looks a lot like a fungus or bacterial problem to me. Yes, they can affect either newer or older leaves depending on the type of disease it is. They usually only rear their ugly head when conditions right for the organisms to grow. Some are a one time deal, and the plant looks great again. Some become continuous problems, and it is then best to remove the plant. Remy |
Here is a link that might be useful: Info with photo of diseased Tiarella leaf
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