Ask a Question forum: birch problems!

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Idaho, hailey
downjenn
Aug 9, 2017 12:16 PM CST
Hello, I have 7 birches. All columnar, and recently planted in pots. They get part sun/part shade. This problem started pretty suddenly. I know I had spider mites, and treated with neem oil and an imidacloprid. I'm not sure if this problem is the spider mites, the spray or just an entirely different issue. please help! thank you!
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Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Aug 9, 2017 12:25 PM CST
Welcome!

Did you spray the Neem while the sun was on your trees?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Idaho, hailey
downjenn
Aug 9, 2017 12:26 PM CST
no. I sprayed early in the morning, and they don't get sun until early evening...
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Aug 9, 2017 12:37 PM CST
Did this happen right after you sprayed? I suspect your trees are suffering from phytotoxicity brought on by mixing the two pesticides together and also spraying in the morning, instead of the evening.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Name: Sue
Ontario, Canada (Zone 4a)
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sooby
Aug 9, 2017 12:41 PM CST
Welcome!

What symptoms prompted you to use the neem and imidacloprid? (Imidacloprid may make spider mite outbreaks worse). If the issue of concern happened on all seven birches within a couple of days of the treatment then it would suggest it is related to the pesticides.

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