Hawaii's Most Invasive Horticultural Plants

   
mamalis
Pittosporum pentandrum

(Photo credit: ?)


Description: Tree up to 55' tall, with 2.5-5" glossy green leaves, resinous-smelling when crushed; tiny white flowers in terminal clusters; and glossy yellow-orange stalked fruits that split in two to reveal 6-8 glossy black seeds.
Risk areas: Moist and wet disturbed forests at low elevations.
WARNING:WARNING! Several species of Pittosporum have proven invasive elsewhere and some are beginning to spread in Hawaii. Exotic species of this genus may potentially compete or interbreed with endemic Hawaiian species of the genus. All foreign species of Pittosporum should be avoided for horticulture in Hawaii.

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