Hawaiian White Hibiscus

Hibiscus arnottianus is a Hawaiian shrub known for showy white flowers that may have a red center or staminal column. It is native to Oʻahu and Molokaʻi, and the Native Hawaiʻi Plants profile reports flowering throughout the year. ## Appearance The source lists mature heights from 6–10 feet and taller, with a width of about 20 feet. Flowers may be pure white in one subspecies or white with a red center in others; fragrance also varies from absent to mild. The glossy dark-green leaves can have red veins. ## Growing Conditions Plant in full sun or partial sun and well-drained soil. The species can grow in moist or dry conditions, although it flowers more profusely in full sun. The source lists cinder and organic soils and notes drought tolerance. ## Seasonal Interest The Hawaiian species profile describes year-round bloom, with flower color and scent varying among subspecies and sources. Its broad shrub form can work as a screen or specimen where space allows. ## Maintenance Prune only as needed and avoid heavy pruning. Monitor for sucking insects and leaf spot. Common names include Aloalo, Hau hele, Kokiʻo kea, Kokiʻo keʻokeʻo, Pāmakani, Molokaʻi white hibiscus, Oʻahu white hibiscus, and white rosemallow. [Native Hawaiʻi Plants: Hibiscus arnottianus](https://nativeplants.hawaii.edu/plants/hibiscus-arnottianus/)