Neem Oil Use
Can Neem oil be used on plants when they are wet?
Certified GKH Gardening Expert
Yes, but you need to take extra care using neem oil. Using improperly, or out of accordance with all instructions will result in dead plants.
This article will help you to use neem oil correctly: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm