Why should flowers have their leaves removed, and what effect does leaf removal have on growth and development?

Leaf removal means taking off old leaves and leaves that are too densely packed, so as to help ventilation and light penetration inside the plant, prompt new branches to sprout or control the plant's vegetative growth, promote flower bud differentiation and flowering, and make the plant grow better. Properly removing some leaves also helps reduce water transpiration and keep the plant neat.

Under normal circumstances, evergreen flowering trees and shrubs, as well as all flowering trees and shrubs when transplanted during the growing season, must have some leaves removed to reduce water evaporation and help them survive. For some evergreen herbaceous flowers, such as spider plant, Japanese cleyera, bamboo, Aspidistra, calla lily, cyclamen and so on, promptly removing some aging leaves can promote the sprouting of new buds. For Japanese maple, coral tree and so on, old leaves can be removed between summer and autumn to promote the sprouting of new leaves. Many flowers that go dormant in winter, such as bougainvillea, Lantana and so on, can have all their leaves removed after being brought indoors in winter to promote dormancy, which helps them grow lush leaves and abundant flowers the following year. When jasmine is brought outdoors in spring, removing old leaves helps it produce more new branches, grow vigorously and form more flower buds. However, conifers are not suitable for leaf removal.