Powdery Mildew on Cherry

garret_87(Zone 6)September 28, 2013

I got a Dwarf North Star Cherry in the spring and planted it up in a huge container. It has been growing nicely all year and even gave me two cherries, but in the last month the tree has been attacked by powdery mildew. Along with the mildew many if the leaves are now speckled with white/yellow dots.
I tried to remedy the situation myself. Three weeks ago I bought Safer Brand Garden Fungicide, but after applying once a week and subsequently finishing the bottle there has been no improvement. Some leaves now are browning on the edges and curling downward.

Any identification and advice will be greatly appreciated. Pics are attached.

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garret_87(Zone 6)

Another shot of the leaves

    Bookmark   September 28, 2013 at 12:54PM
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garret_87(Zone 6)

A few leaves have brown spots

    Bookmark   September 28, 2013 at 12:57PM
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garret_87(Zone 6)

These are leaves on new growth on the top of the tree. Browning on the edges.

    Bookmark   September 28, 2013 at 1:02PM
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garret_87(Zone 6)

Final pic. Full shot of the tree. It's small but I will do anything to keep this tree happy and healthy. Any advice to help this Cherry will be much appreciated.

    Bookmark   September 28, 2013 at 1:07PM
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jean001a(Portland OR 7b)

Some of the brown is due to running short of water some time ago. (Why is it in a pot?)

Powdery mildew is treated at the very first evidence seen. But at this time of year, the cheery will soon lose its leaves. So no Rx needed now.

    Bookmark   September 28, 2013 at 11:16PM
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garret_87(Zone 6)

I live on the second floor and only have a sunny balcony to grow on. All my fruits and vegetables need to be in a container. It's been quite a fun and rewarding hobby.

When should I start treatments for the powdery mildew? Is there anything I should spray on it before winter?

    Bookmark   September 29, 2013 at 12:33AM
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