Harold L. Lyon Arboretum | A University of Hawaii Research Unit

ALOHA!

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. The 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.

To learn more, click on the topics on the navigation menu above.

ANNOUNCEMENTS

⚠️No parking reservations April 21st-25th⚠️

We anticipate our access road to be closed with short notice for ongoing renovations. Walk-ins will be welcome to enter via our pedestrian access trail. We will not be taking parking reservations this week. All visitors must check in at the Gift Shop.

Scheduled Closures

Friday, April 18th: Closed to the public in observance of Good Friday

Click here to view the Events and Closures Calendar

VISIT

Please read the following information

Open to the public Monday through Friday from 9 am until 3 pm, closed on weekends, State and Federal holidays .
Admission is free, but donations are greatly appreciated. The suggested donation amount is $10 per person.
Reservations are required for parking. Visitors without vehicles are welcome without reservations. ALL visitors must check in at the Gift Shop.
- Reservations open only one week in advance on the Friday before.
Organized groups (Schools, Homeschools, Mommy Groups, Churches, Business groups, etc.) with 8+ participants are REQUIRED to make arrangements with the Lyon Education Department (email Lyonedu@hawaii.edu.
- K-12 schools and college groups can visit our K12 EDUCATION PAGE or UNIVERSITY/COLLEGE GROUPS for more information about our school tours and to request a tour. All school tour requests must be made through our field trip request form found on the education webpage.

For reservation questions, call the MAIN OFFICE at (808) 988-0456. Mahalo!

Make your reservation on Eventbrite at the link below.

*Please be aware that there may be delays coming and going on our access road due to ongoing renovations. Thank you for your patience.

CLICK HERE FOR PARKING RESERVATIONS

Last updated: 4/15/25

Community Classes and Events

Spring Plant Sale!

Get ready for the Spring Plant Sale! Happening Friday, May 9th and and Saturday, May 10th, from 9:00 am – 3:00 pm.

More information about our plant sales in general, click here.

For Spring Plant Sale information, click here.

Sign-ups for reserving a spot opens on April 14th at 10:00 am.

Camps and School Tours

Summer Camp 2025: Registration for our Nāhele Explorers Camp is April 25th. More information here: https://manoa.hawaii.edu/lyon/2025/04/03/summer-2025-nature-camp-at-lyon/

School Tours: You must fill out the online request form for school tours for summer programs, college groups, which is now open. We do not take requests over the phone or email. More info here: LYON SCHOOL TOURS