The delicate natural balance of the Hawaiian Islands was dramatically disturbed over time with the arrival of people on the islands. Through clearance and the introduction of non-native plants and animals, the moth’s natural habitat disappeared. It is thought that the moth itself has also disappeared. Without these moths the plant cannot easily pollinate and reproduce. As a result, no more than seven of these plants are known to exist in the wild on the island of Kaua’i, making the Hawaiian Palm one of the world’s rarest plants. According to the IUCN Red List, Brighamia insignis is listed as Critically Endangered.
Propagation by Seeds
Most sources state that Brighamia seeds require light to germinate and to sprinkle the seeds on the surface of moist, fine textured medium that drains well such as fine perlite or commercial peat/perlite potting mix. Seeds should be kept in partial shade. Seeds will begin germinating in a couple of weeks and that most seeds will sprout at the same time.