I used to live and garden in Kaneohe on Oahu. Had to leave because of the bad enonomy and settled in Sacramento CA. I still live in Hawaii in my heart and keep in touch with many friends in the islands and go back as often as possible. I have done my best to recreate my Hawaiian garden here in N.CA with hibiscus, taros, gardenias, shell and butterfly gingers, princess flowers, bird of paradise, morning glories and moonflowers, lantana, bouganvillia, passionflower, ferns, pentas, oleander, palms, philodendrons, ti plants, cannas, bananas, brugmansias and bedding plants, like begonias, vincas, impatiens, coleas, and pelorgoniums as well as tropical water lilies. The ony things I am missing are the ixoras, snow bushes, plumerias, Tahitian gingers and all the different heliconias, ( I had 6 species and varieties). We also have typical mainland stuff like cameleas, azaleas, spring flowering trees and bulbs and roses. It gets very hot here(it's about 100 right now) but I and my plants have adapted pretty well.
The other thing I really miss is the animals, they really brought the garden to life. Every step on my lawn would send a dozen little skinks scuttling and there were lizards on every fence during the day and every wall at night. The yard was full of finches, doves, cardinals, myna birds and white eyes. I have humming birds here but I miss all of the abundant life of Hawa'ii.
I will stop in now and then to see what is going on. I can't comment on gardening in Hawa'ii today but love to read other people's posts.