This semi-tropical fruit is included mainly to sustain the principle now so generally favored of growing thick tops in hot, relatively dry climates. Professor Wickson, of California, says: "The best form of tree is a low-headed compact growth. When young the stem must be protected by wrapping with paper or something of the kind until the leaves do that service.
The lower branches will bear the first fruit, and as the tree attains age they will stop growing and can be removed. Thus the head of the trees is raised gradually and space is given for the drooping of the higher branches."
Visitors to California, Florida, and Cuba will be surprised by the thick foliage, under shelter of which perfect oranges develop, just as perfect fruits of all the orchard varieties in the arid States and prairie States east of the Rocky Mountains develop under the shelter of the outer thick foliage of headed-back trees.
The blossoms and fruit of the quince appear on new shoots of the same season's growth like the hickory, butternut, walnut, and some roses. That is, when growth commences in the spring no flowers appear; but after the terminal shoots have grown several inches the flowers appear at the top of the season's growth. Hence in pruning the quince, any attempt at cutting back will take away all the fruit-bearing wood of that season. Thus the pruning of this class of trees and shrubs, known as "co-terminal," is confined to removing dead wood and the interior growth no longer bearing perfect leaves or fruit.