Kahanu Garden (294 acres) is a botanical garden located on the Hana Highway (close to the marker) near Hāna, Maui, Hawaii. It is one of five gardens of the non-profit National Tropical Botanical Garden.
The garden was established in 1972 on Maui's northern coast, with rugged black lava seascapes, and is surrounded by one of Hawaii's last undisturbed pandanus forests. It also contains the Piilanihale Heiau, a National Historic Landmark believed to be the largest ancient temple in Polynesia. Dating from the 16th century, it is constructed from lava blocks and is by in extent, with a high front wall.
The garden's ethnobotanical collections focus on plants traditionally used by Pacific Island people. It includes the world's largest breadfruit collection, first established in the 1970s. Today the garden contains 220 accessions of approximately 120 varieties of breadfruit collected from field expeditions to over 17 Pacific island groups in Polynesia, Micronesia, and Melanesia, as well as Indonesia, the Philippines, and the Seychelles. This collection is used for research and conservation by NTBG’s Breadfruit Institute.
Other garden holdings include bamboo, banana, calabash, coconut, kava, laurel, Pritchardia palm, sugar cane, taro, turmeric, vanilla, and bitter yam.
Kahanu Garden is open to visitors An admission fee is charged.