Powdery Mildew on Streptocarpus

thankful790306January 20, 2013

I have a small collection of Streptocarpus on shelves with fluorescent lights and a fan. A few of them have powdery mildew on the leaves. How can this be prevented? Only a few have this problem, is it just certain varieties that are vulnerable? Any suggestions would be welcome.

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irina_co(z5 CO)

T. -

there is a discussion on AV part of the forum - and there are several suggestions on what to do. You can do search on AV forum to look back on what was recommended before.

Streps are more resistant to PM than AVs. I would trim the most affected leaves - do some treatment - out of what was recommended - skip Lysol, it is not helping anymore - and check what is your humidity/temperature range during 24 hours. It is not good to have big temperature difference between day and night, streps like it under 70F, and I do not think they need humidity above 50%.

Good Luck


Here is a link that might be useful: PM

    Bookmark   January 21, 2013 at 1:55PM
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