I have scale insects killing seedlings and looking for a treatment to kill scales.
We do not recommend spraying anything on the foliage of Japanese Red Maples. You should use a systemic product for scale insects on these sensitive trees. Safari is the preferred systemic to use as a soil drench but it is also quite expensive. If Safari is out of your price range, Merit or Criterion can be used as a soil drench as well.
Answer last updated on: 03/13/2011