Threats to Polyscias racemosa include competition with alien plant species, such as Aleurites moluccana (Kukui), Psidium guajava (Guava), Lantana camara (Lantana), and Leucaena leucocephala (Koa Haole).
Other threats include habitat degradation by feral goats, fire, and fruit predation by rats.
In addition, a mature, cultivated tree was observed being killed by an introduced insect of the long-horned beetle family (Cerambycidae).This beetle could potentially attack and damage or kill wild trees(USFWS.2000.)
National Tropical Botanical Garden (NTBG) currently has ex situ holdings in its seed bank, which represents two out of the fifteen populations. In addition, there are approximately 400 plants growing in the nursery.
The Kaua'i District, Department of Land and Natural Resource, and the Department of Forestry and Wildlife outplanted approximately 400 individuals at Kauhao Ridge, and additional outplanting is planned. Other outplanting sites include: Sleeping Giant, DLNR Kalalau Exclosure, and Houpu.
The Lyon Arboretum, National Tropical Botanica Garden, and the Waimea Arboretum have successfully propagated Munroidendron racemosum.(USFWS.1995.)
Research Management Needs:
1. Fence and manage surviving wild populations of M. racemosum.
2. Test the influence of weeding and fencing on populations of Munroidendron racemosum.
3. Conduct pollination biology genetics and seed dispersal studies.
Ex Situ Needs:
1. Establish secure ex situ stocks with full founder representation.
2. Develop proper horticultural protocols and pest management for Munroidendron racemosum.
3. Survey ex situ holdings and conduct molecular fingerprinting of Polyscias racemosa.
(Recommendations derived from Chapin,M.H. and Maunder,M.)