Friday, November 18, 2011

The 2 peonies at home looks has some brown spots on its leaves!!?

I am a newbie to peonies and I have planted 2 in my front yard Nov last year. Since spring this year, my peonies leaves turned yellow, and has some brown spots on it, looks like some kind of rust. Other plants nearby it are normal.





Are they lacking water? nutritions? Fungi problem?





Does anyone know if there is a way to save it? Thanks!!





-mw

The 2 peonies at home looks has some brown spots on its leaves!!?
MW- it would help to know where you live, or at least which USDA hardiness zone you're in, it helps us to answer your question.





That being said, many Peony's are suceptible to bacterial or fungal leaf spots. They appear as small black spots, sometimes ringed with yellow, or orange. The spots become so prolific, that they fill the spaces between, and can become large blotches.





If this is the problem, it tells me two things; too much water on the foliage. When you do water, keep the water off of the leaves when possible. The other, not enough air circulation. Try to leave some space for air movement. New plants sometimes come with the problem, as they are grown in large fields of similar plants, and the problem passes on from plant to plant.





This time of year, I wouldn't really do much to treat the problem. Be sure to remove the leaves when they die back, and throw them away or burn them. Do not ever compost diseased leaves, as this disease may winter over in the compost pile. If you are worried for next year, apply a general purpose fungicide to the plant, when the growth is about 75% mature, this will help prevent infection. Use an organic fertilizer as well. If you see spots develop, immediately resume the use of the fungicide. Always follow the directions on label of all of your garden chemicals.





If you're still not sure of the diagnosis, bring a fresh sample to your local independent garden center, they may have an expert on staff who can diagnose the problem.





I hope that this helps


Good luck-
Reply:I don't know where you live, but I'm on the mid-Atlantic seaboard of the U.S. This time of year is when the Peonies are dying back. Their foliage often starts to yellow up and develop spots. At the beginning of October is when you want to cut them back to the ground, anyway. Just dispose of the leaves and stems. I mark where the Peonies are planted once I've cut them back so I won't disturb their new shoots in the spring. A stake or low fencing works nicely. Whatever will work as a reminder for you that your Peonies are there so you don't dig them up or harm them in the spring.

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