Like with our native hibiscus, there are types of loulu unique to each of the Hawaiian Islands. Some islands have more than one type, and each is unique to a mountain, valley or particular area on that island or mountain. To keep things from getting too mixed up and hybridized, we should try to grow the one that is native to our area. Loulu palms are not hard to grow if you can get mature seeds. Unfortunately, in its wild home, there are many introduced animals that prey on the loulu seeds and seedlings.
Rats love to eat the seeds while still on the tree and on the ground.
Pigs and goats will eat the seeds and seedlings, so you don't see many young plants of loulu in the forests today. Weeds also can easily outcompete them and wildfires burn up the palms and their seeds. Once you get good seeds though, take off the outer husk and bury them halfway in a pot of clean, well-drained potting soil. Grow it until it's about a foot tall and then plant it in the ground or a series of ever larger pots. Here on Oahu our main loulu is Pritchardia martii .