The Garden of Weedlessness lies beyond the moon-shaped doors. A footbridge arching over ponds, boulders and plants offers a bird's-eye view of the landscape. This is the domain of the penjings, the miniature trees that embody the Chinese art of living sculpture.
This greenhouse is designed in 1985 to accommodate the superb collection of penjing donated by Mr. Wu Yee-Sun of Hong Kong, an eminent penjing expert and intellectual master of the Lingnan School of Southern China. The bridge is a standard feature in Oriental gardens. In Chinese tradition, a bridge in a garden prevents evil spirits from crossing it.
One of the walls of the greenhouse is punctuated by windows with rosewood floral motifs, each representing a plant with a special meaning. For instance, the pine symbolizes dignity and majesty; the orchid, refinement and nobility; the apricot tree, chastity and sturdiness; and the bamboo, fidelity, humility, wisdom and sweetness.