Koko Crater Botanical Garden (Hawaiʻi Kai)

A free garden inside Koko Crater with rare and endangered dryland plants, cactus and a famous plumeria grove. A 2-mile mostly flat loop trail with little shade, so go early or late in the day.

• Inside Koko Crater near Hawaiʻi Kai, next to the Koko Crater Stables; unpaved parking lot at the gate.
• Free admission; open daylight hours (closed Christmas and New Year's Day).
• 2-mile loop, mostly flat and dry; plan up to a couple of hours.
• Highlights: the plumeria grove (best when blooming in late spring and summer), Hawaiian and Madagascar dryland plants, cactus and succulents.
• Very little shade and no water; bring water, hat and sunscreen. Lock your car and keep valuables out of sight.

Sources: Honolulu Magazine: Koko Crater Botanical Garden (2015) · City and County of Honolulu: Honolulu Botanical Gardens

Last checked Oct. 29, 2026. Hours, fees and rules can change, so confirm with the official source before you go.