Perennials forum: Echinacea issue

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Name: Jennifer
48036 MI (Zone 6b)
Cottage Gardener Houseplants Spiders! Heucheras Frogs and Toads Dahlias
Hummingbirder Sedums Winter Sowing Peonies Region: Michigan Garden Ideas: Level 2
Aug 6, 2016 6:39 AM CST
I have one cultivar that every year ends up with brittle leaves with a silver cast. It is Sundown. The plant comes up normal. And flowering is not affected. After many years it never seems to have spread to any other plants.

Does anyone know what causes this?

Thumb of 2016-08-06/jvdubb/792b0d

Name: Gary
Wyoming MN (Zone 4a)
Aug 6, 2016 12:30 PM CST
t looks like powdery mildew to me. Some plants are very susceptible to it while other plants growing next to them are without any symptoms. It can be controlled with a fungicide but usually they do better if they have better air circulation around them. Many garden phlox and monardas are afflicted with powdery mildew. Plants with tougher leaves like echinaceas, do not get it very often. Lilacs too are very prone to it.
Name: Bob
Vernon N.J. (Zone 6a)
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Forum moderator Heucheras Echinacea
Hellebores The WITWIT Badge Dog Lover Lover of wildlife (Black bear badge) Region: New Jersey Celebrating Gardening: 2015
Aug 6, 2016 7:29 PM CST


Big Sky Echinacea have tended to have more problems for me then other series.

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