Birch Trees

Neem oil drench for white birch trees

Zone 93923 | Anonymous added on February 12, 2018 | Answered

Can you please provide specific information regarding neem oil drench for white weeping birch trees? Oil to water ratio, quantity of solution to apply, when to apply to soil and any other relevant information. The trees are growing in coastal central California. Thank you!

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Answered on February 13, 2018

Those look like harlequin ladybird larvae and they do not cause leaf damage. They are more likely there to eat some other pest that is present such as aphids. You need a positive ID on what is going on. Correct treatment depends on accurate diagnosis.

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