Pittosporum trigonocarpum is an evergreen shrub
The plant is harvested from the wild for use as a medicine.
E. Asia - southern China (Guangxi, Guizhou, Hunan, Sichuan)
Forests, forest margins, thickets, slopes, valleys, river sides; at elevations from 400 - 2,000 metres[
Pittosporum species generally grow best in a sunny position, but tolerate light shade. They succeed in most well-drained soils[
Although flowers usually appear to be hermaphrodite, many species of Pittosporum are functionally dioecious, with individual specimens bearing mainly or totally flowers of one sex only. Even so, occasional functionally hermaphrodite flowers will appear and, in at least some species, these flowers can be self-compatible and produce fertile seed even in the absence of any other plants of that species[
The species in this genus are also very likely to hybridize with other members of the genus[
]. When growing a species from seed it is important to ensure that the seed either comes from a known wild source, or from isolated specimens in cultivation.
The roots and bark can be used for the treatment of asthma[
Seed - sow when ripe in the autumn or in late winter in a warm greenhouse[
]. The seed usually germinates freely. Prick out the seedlings into individual pots when they are large enough to handle, move the plants to a cold frame as soon as they are established and plant out late in the following spring[
]. Consider giving them some protection from the cold during their first winter outdoors.
Cuttings of half-ripe wood, 5 - 7cm with a heel, mid summer in a frame[
Basal ripewood cuttings late autumn in a cold frame[