how effective is neem oil for the vegetable garden
Neem Oil Extract Concentrate. 1  For organic gardening. 2  Controls aphids, whiteflies and other listed pests. 3  Controls black spot, rust and powdery mildew.  Controls spider 1  mites. For use on roses, flowers, houseplants, ornamental trees and shrubs, fruits and vegetables.  Can be used up to day of harvest.