Neem Oil
Essentria IC3
Insecticidal soaps
Remove all barnacle scales with a power sprayer
Beneficial Insects (lady beetles, lady bugs, and lacewings)
NOTE: Avoid using nervous system insecticides, such as malathion, Dursban (chlorpyrifos), and Orthene (acephate). They are labeled for use on many shade trees and ornamental plants for aphid control, but are not safe to use on cannabis. If something isn’t safe to be used on edible plants, then chances are it’s not safe to use on cannabis.