Q.How to Save my Tree and Plants from Weed Killer that I Accidentally Sprayed on Them?
Hello,
Yesterday, I realized that I sprayed some Sprectracide Weed and Grass Killer onto my Kwanzan Cherry Blossom tree that is about 2 years old, Gardenia and 2 tea olive trees that I purchased early spring. I meant to put the pesticide onto them but I picked the wrong bottle. I noticed it because of all of the brown spots on the leaves, which I attached to these questionnaire that I am sending. I sprayed them on Friday and didn’t see the spots until Sunday. Once I saw them, I removed all of the leaves/small branches that were turning yellow, brown, and black. I also watered them down very well and near the root system to hopefully wash away the weed killer.
Do you have any other suggestions for me to help save my plants and tree?

Certified GKH Gardening Expert
Unfortunately, not much can be done at this point. If it is caught immediately, spraying with water does help. You will have to let it fend off what it can. Eventually it can recover on its own. It does help to apply activated charcoal to your soil to some degree. It can help sap out some of those chemicals, but this is just going to be a game of patience. Also try adding compost to absorb some of the chemicals. You can also call the company and ask for advice.
This article will help: https://www.gardeningknowhow.com/ornamental/trees/tgen/herbicide-tree-injury.htm