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- Q.Treating Powdery Mildew On Peonies - After many years of beautiful, trouble-free peonies, they are suddenly covered with powdery mildew, especially the stems. This year, there ...
- Q.Paeonia Problem - A few months ago I replanted a healthy paeoni plant that I had bought from a garden centre. I planted ...
- Q.Peony Bugs/Mites?? - I have peonies that have some brown and or yellow spots on some of the leaves. I can tell it's ...
- Q.Peony Blight Care - Shortly after bringing my 3 BEAUTIFUL HUGELY BLOOMING peonies home in June - within a month - flowers stopped and ...
- Q.Tree Peonies - Accidently, my pricey Tree Peony has been cut down to ground level (as the ordinary species in the rest of ...
- Q.Tree Peony - I would like care instructions for a tree peony.
- Q.Why Do My Peonies Have Brown Spots? - Why do my peonies have brown spots?
Asked by
marguerite on
August 20, 2012Q.Treating Powdery Mildew on Peonies
After many years of beautiful, trouble-free peonies, they are suddenly covered with powdery mildew, especially the stems. This year, there is probably nothing I can do, since the whole row (about 50 feet) is affected, but I need advice to save them for the future:
1. Should I cut back the affected stems now or wait until fall?
2. Should I treat the remaining plants and stubble with fungicide as well?
3. They look crowded. Do they need to be thinned?
4. The neighbor has new trees and bushes which reduce the light, so I suspect that to be part of the problem. Would they need to be altogether transplanted?I HOPE TO AVOID SOLUTIONS 3 AND 4!
Thank you very much.
Marguerite
Answered by
Nikki on
August 21, 2012
Certified ExpertA.Yes, you can remove affected growth. You can actually cut the entire plant to the ground in fall if desired. These articles will help with the powdery mildew: https://www.gardeningknowhow.com/problems/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htmPeonies are very finicky when replanted. It may take them a year or two before they recover from transplant shock, so take this into consideration before moving them. Your neighbor may be willing to trim back the trees/bushes some if asked nicely. :) If you need help with dividing plants to ease overcrowding, here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/peony/dividing-peony-plants.htm
Was this answer useful?00- Answered by
roseman on
August 22, 2012A.You can also spray the entire plant down with a product called Green Cure. It is available on-line and at some garden centers locally. It is one of the very best I have found at getting rid of powdery mildew problems.
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- Asked by
graeme.main1 on
September 9, 2012Q.paeonia problem
A few months ago I replanted a healthy paeoni plant that I had bought from a garden centre. I planted it from a 9" POT to a large 15" high half barrel planter. At first it seemed to be doing ok, but I wasn't expecting any flowers or anything. Unfortunately, it now seems to be in a bad way as quite a few of the leaves are going brown and dry. Any ideas?
- Answered by
Nikki on
September 10, 2012
Certified ExpertA.After repotting, plants will oftentimes experience a period of shock while adjusting to their new environment. Make sure that you have given it adequate water and place it in similar light conditions as before.
Was this answer useful?00 - Asked by
Anonymous on
September 23, 2012Q.Peony Bugs/Mites??
I have peonies that have some brown and or yellow spots on some of the leaves. I can tell it's killing them. What do you suggest that I do?
- Answered by
Nikki on
September 24, 2012
Certified ExpertA.It's actually most likely a fungus called rust. This article will help you:
https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htmWas this answer useful?00 - Asked by
parttimegardener on
October 15, 2012Q.Peony Blight Care
Shortly after bringing my 3 BEAUTIFUL HUGELY BLOOMING peonies home in June - within a month - flowers stopped and got that white powdery disease (which everyone calls it that, but is there an actual term for it, or is that it: white powdery disease?) Anyway, my Q is: the plant itself is going gangbusters, still growing beautifully, but no flowers at all. The new stuff coming in starts off nice and green but eventually turns white. It's Oct. 15 and I haven't done anything with them. Should I cut them down right to the ground and treat them in the spring? Temps in the high 60s now. They're all planted in sun/shade with the closest plant 4 or more feet away, so how did they get this blight without being crowded or shaded too much, which everything says is the cause? Could they have had it when I bought them? I'm a novice, so thank you for any help.
- Answered by
Nikki on
October 16, 2012
Certified ExpertA.This is powdery mildew. This article will help with that:
https://www.gardeningknowhow.com/ornamental/flowers/peony/powdery-mildew-peonies.htmNeem oil will also help with this.
Was this answer useful?00 - Asked by
68greenapple on
October 22, 2012Q.Tree Peonies
Accidently, my pricey Tree Peony has been cut down to ground level (as the ordinary species in the rest of the garden) during fall cleanup.
QUESTION: will it revive next spring?
- Answered by
Nikki on
October 23, 2012
Certified ExpertA.It is difficult to say for certain, but it should come back just fine, as long as its roots are still intact.
Was this answer useful?00 - Asked by
Anonymous on
April 7, 2013Q.Tree Peony
I would like care instructions for a tree peony.
- Answered by
AnnsGreeneHaus on
April 8, 2013A.The information in this article is for both herbaceous and tree peonies: https://www.gardeningknowhow.com/ornamental/flowers/peony/peony-care.htm
Was this answer useful?00 - Asked by
CatD on
April 21, 2013Q.Why Do My Peonies Have Brown Spots?
Why do my peonies have brown spots?
- Answered by
AnnsGreeneHaus on
April 21, 2013A.this article should help: https://www.ipm.iastate.edu/ipm/info/plant-diseases/peony-leaf-blotch
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