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Hibiscus syriacus ‘Diana’ (photo courtesy of Linda Lamb Peters)
Hibiscus syriacus ‘Diana’ (photo courtesy of Linda Lamb Peters)

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Zone
Zones H1
Full Sun
Full
Regular Water
Moderate

Hibiscus waimeae

White Kauai Hibiscus
Malvaceae
Evergreen, Shrubs, Trees

HIBISCUS

Big, brilliant flowers on plump shrubs rank this among the showiest flowering shrubs in Western gardens. Some are very tender tropical species grown in Hawaii, others very hardy. Plants typically bear funnel-shaped blossoms, often with prominent stamens.

Giant whitefly is the most important pest of hibiscus in central and Southern California, coating the undersides of leaves with wax and eventually defoliating the plant. A parasitoid wasp has been released to control it, and research continues on its control.

Hibiscus waimeae

Evergreen shrub or tree native to Kauai. Grows to 18–25 ft. tall and about half as wide. Blooms much of the year. Each fragrant, 5–8-in. flower lasts just one day; blossoms open white in the morning, turn light pinkish by afternoon. Rounded, downy light green leaves to 7 in. long. Use singly as a specimen or mass as a screen. Protect from wind.

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