They feed on trees and shrubs, except in the subfamily Dioptinae, which feed on herbaceous plants (Miller, 1992).

Olericulture is the science of vegetable growing, dealing with the culture of non woody (herbaceous) plants for food.

These herbaceous plants range from 0.5 to nearly 4.5 meters (1.5 15 feet) tall depending on the species (Berry and Kress, 1991).