Lyon Arboretum is part of the University of Hawaiʻi and a public botanical garden. We are nestled in the back of Mānoa Valley, just five miles from the bustle of Waikiki. Lyon Arboretum has over seven miles of hiking trails and boasts more than 6,000 taxa of tropical and sub-tropical plants on our nearly 200 acres.

We are open to the public Mondays – Fridays, 8:00 am – 4:00 pm and Saturdays, 9:00 am – 3:00 pm. We are closed Sundays and for state and federal holidays.


Upcoming closures

February 29, 2020

Lyon Arboretum will be closed all day for a private event on Saturday, February 29.

March 26, 2020

Lyon Arboretum will be closed all day for Prince Kūhiō Day on Thursday, March 26.

Questions regarding closures can be directed to our Main Office at (808) 988-0456. Mahalo!

Paid Summer Internships

We are now accepting applications for our Friends of Lyon Arboretum Summer Internship Program! See the internship page for more information!