Nestled deep in Manoa Valley on the Island of O'ahu, the Harold L. Lyon Arboretum is a leader in the fields or Conservation Biology, Ethnobotany and Horticulture. On its 194 acres, Lyon Arboretum maintains a world renowned collection of more than 5,000 tropical plant species including one of the largest palm collections found in a botanical garden; supports Hawai'i's horticultural and agriculture industries; and works to preserve and restore Hawai'i's tropical forests. It is an active research facility and academic resource offering a wide range or programs to local and international communities including an innovative and ground-breaking tissue culture program for propagation of endangered plants.

The Arboretum is also home to several Unique collections of Hawaiian plants, Monocotyledonae, Zingiberidae, and Dicotyledonae. You can read detailed information about the Arboretum's Collections by clicking the links below:
Collections Information view online
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Harold L. Lyon Arboretum, University of Hawai`i-Manoa, 3860 Manoa Road, Honolulu, HI, 96822 (808)988-0456; (808)988-0462 (fax)
Opening Times:
MONDAY-FRIDAY, 9am - 4pm; SATURDAY, 9am - 3pm
Closed on Sundays and Public Holidays
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