Joe from Pa writes
There is currently young fruit on the tree and it has a serious aphid infestation.
The Bonide Fruit Tree Spray Concentrate is not labeled for use on plum trees so we could not recommend that application. The Bio Advanced Fruit, Citrus and Vegetable Insect Control is labeled for plums and a wider range of edibles and would be a great long term control choice for aphids. The use instructions will be on the product label of the bottle to determine how much to use per your tree size. For plums, the only restrictions during use are to not harvest fruit until at least 21 days after application and to not make more than one application per year. If you need to use a contact/foliar spray product while the Bio Advanced makes its way through the root zone and into the tree to protect it, you can apply a product like Fertilome Triple Action.
Answer last updated on: 06/02/2021
