Rudbeckia Problems

nziegler773August 2, 2008

It's time for my rudbeckia to be blooming and instead I seem to be having major problems. Many of the buds seem wilted and brown. The buds that are trying to bloom have very stunted and small petals. There are some brown spots on the leaves with a few holes as well but otherwise the foliage does not look too bad. We had a big problem with earwigs earlier this year. Could that be the problem as well or is there some type of blight or fungus going on?

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Kimmsr(4a/5b-MI)

The only times I have seen problems with any of the Rudbeckias is if they are grown in a too rich garden soil or are watered too frequently.
What is the soil these are growing in like?
How well does that soil drain?
Very seldom are earwigs any problem in the garden.

    Bookmark   August 4, 2008 at 7:41AM
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nziegler773

We have been having an incredible rainy season in VT. As I looked more carefully at other plants in my garden, I noticed bud wilt on other plants too. My Liatris are all drooped over and brown and some foliage on coreopsis looks rotty. The monardia looks bad too. I have attached a link to some photos that I posted. The only thing that is weird is that the rudbeckias and other plants in my neighbors garden do not seem to be having the same problem.

Here is a link that might be useful: photos of rudbeckia and others w/ issues

    Bookmark   August 4, 2008 at 8:41AM
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petzold6596(8b southern NM)

Soil drainage may account for the difference. Wet feet does not make for happy plants such as rudbeckia and many other herbaceous perennials.

    Bookmark   August 5, 2008 at 2:40PM
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nziegler773

I found kimmsr's advice on testing soil drainage on the Soils forum and will give those tests a try. The soil that this border is in seems really nice but I have not observed it in the objective manner that is prescribed in those 5 tests. At least I know that I am going down the right path now and that it is likely not pests. Thanks for the advice!

    Bookmark   August 6, 2008 at 8:33AM
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