Yellow Hawaiian Flowers Shown here are Hawaiian plants with conspicuous yellow or golden flowers. Allamanda cathartica – Allamanda Calathea crotalifera – Rattlesnake Plant Costus comosus – Red Tower Ginger Falcataria moluccana – Moluccan Albizia Hedychium flavescens – Yellow Ginger Hedychium gardnerianum – Kahili Ginger 1 of 51>Last