To control insects and diseases, it is a good time to use lime-sulphur on most trees and roses.
For Apricots and Peaches, it is a good time to spray with liquid copper . I actually tend to apply lime-sulphur on my peach tree to control leaf curl.
It is also a good idea to combine horticultural oil (dormant oil) with both sprays to not only increase their effectiveness but to act as insect control. The primary way horticultural oil kills insects is by suffocating them.
Horticultural oils target several insects: adelgids, aphids, caterpillar eggs, leafhoppers, mealybug, mites, scale, spider mites, thrips and whiteflies. They can also be effective against powdery mildew.
And, according to About, since horticultural oil is effective against aphids, which spread viruses by feeding on plants, horticultural oil is also something of a virus control.
Thanks for dropping by,
Luiza
