As the buds develop, remove all but the top bud on each branch. When they are fully developed shading is no longer necessary. Aphids, the most common is fortunately, the easiest to control. Mites are discouraged by frequent stiff water sprays. Kelthane or malathion can be used.
White flies are also bothersome.
Malathion, isotox, will kill only adults. Repeat program as eggs hatch. Destroy heavy heavily infected plants.