Thrips or Botyris on my peony buds?

BellportMay 19, 2005

All of my peonies are new. I think Mons. Jules Elie (currently in a "root control bag", not planted) is afflicted by one or the other. Same with Chiffon Clouds (planted in ground last fall). On Chiffon, the buds started forming, and then just stopped growing and shriveled up. This is the case with half of the buds on Mons Jules. Very upsetting!

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Signs of botrytis ....a bit of fuzz at the stem's base and if they fall over might be attributed to this fungal disease.
You are advised to cut away all signs of damage and burn.........or garbage the refuse. Do not compost.

Thrips cause the leaves to become streaky...washed out looking. If you suspect this, place a sticky pest strip near the plant. Plants that are blue will draw thrips.

If suspicion warrants, use a 40 to 1 solution water/soap....wash the plant top to bottom, bottom to top, then wait for 10 minutes. Rinse well.

If the plant is in bloom, do the leaves but not the bloom.
Rinse after 5 minutes.

    Bookmark   May 23, 2005 at 10:43PM
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Thank you Diane! I will check for fuzz at the base tomorrow morning and follow your procedure.

    Bookmark   May 24, 2005 at 6:54PM
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Do a web search on bud blast... It's most likely your problem.

IA Z5a

Troubleshooting a common problem

The buds start to grow in spring, but they stay very tiny and die. What's wrong?

This is a condition called "bud blast" Â the flower buds grow about the size of a small pea but then stop growing and fail to open. Possible causes include poor soil fertility, planting too deeply, too much shade, dry spells or cold injury.

Colder-than-normal winters followed by late spring frosts can abort the buds of mature and new plants. In this case, the best remedy is to protect the clumps with winter mulch (fall leaves or Christmas tree boughs work well) applied in late fall or early winter after cutting down the previous season's foliage.

Bud blast often occurs in newly planted peonies. Because these plants form their buds in the fall, a clump that has been divided has a much-reduced root system that sometimes doesn't have the strength to develop all the buds, and so they just dry up. This problem goes away as the plant matures.

Here is a link that might be useful: Bud Blast

    Bookmark   May 25, 2005 at 2:54PM
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YCunnington(Zone 5 Ontario)

See the link below if you did not find the "bud blast" info.

Cheers, Yvonne

Here is a link that might be useful: peony problems, including bud blast

    Bookmark   December 7, 2005 at 1:11PM
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Thank you, Yvonne! It's always good to hear from people that know and grow peonys. :) So now what does one do about cladiosporum (sp)? Thanks!

IA Z5a

    Bookmark   January 7, 2006 at 11:32PM
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