7 Stunning Oahu Botanical Gardens to Visit

1. Foster Botanical Garden

Foster Botanical Garden is Honolulu’s oldest botanical sanctuary, tucked into 14 acres smack in the middle of downtown. Over 10,000 rare tropical plant species from around the world live here.

The garden has 23 “Exceptional Trees”, some planted back in the 1850s by Dr. William Hillebrand. You can wander on your own or hop on a free guided tour at 10:30 a.m. each morning.

Keep your eyes peeled for the carnivorous Pitcher Plant, exotic Orchids, the fruit-bearing Cannonball and Sausage Trees. Don’t forget to take a peek at the Butterfly Garden!

Note: Although the paved path might be stroller-friendly, it might not be the most wheelchair-accessible spot, so plan accordingly.

2. Koko Crater Botanical Garden

Located on Oahu’s east side, this botanical garden is inside a volcanic crater. The 60-acre collection spotlights rare and endangered dryland plants.

There’s a wild mix of cacti, succulents, and desert plants thriving here. Hiking trails wind through the crater, so you can take an easy stroll among all the fascinating greenery.

Don’t miss the grove, where the Hawaiian native wiliwili trees showcase their vibrant hues.

3. Waimea Valley Botanical Garden

Waimea Valley’s botanical garden has thousands of tropical and subtropical plants across 52 themed gardens on 1,875 acres.

You’ll walk a paved path lined with stunning collections from around the world.

The path ends at sacred Waimea Falls, and yes, you can swim in the pool below. Ancient archaeological sites are scattered through the valley, so there’s a real sense of Hawaiian history here.

Admission is $25 for adults, though military discounts help. The walk is easy and accessible, so anyone can enjoy it.

Active folks and nature enthusiasts will love this gem on the North Shore of Oahu.

4. Lili’uokalani Botanical Garden

Lili’uokalani Botanical Garden is a 7-acre spot dedicated to native Hawaiian plants near downtown Honolulu. The land once belonged to Queen Lili’uokalani, Hawaii’s last monarch.

There’s a gentle waterfall in the middle and a quiet stream winding through. The free public garden focuses on native plants that grew here before European contact.

5. Lyon Arboretum

Lyon Arboretum hangs out in Manoa Valley, where 194 acres show off over 19,000 plants from Hawaii and beyond.

There are 12 different gardens, including a Native Hawaiian Garden and a Bromeliad Garden.

It’s technically a botanical research center, but it feels like your own tropical hideout. Trails wind through rare collections, and you’ll pick up plenty about conservation as you go.

If you’re into immersing yourself in nature and discovering hidden gems, this garden is perfect for you. Pair it with a hike to nearby Manoa Falls if you’re feeling ambitious.

6. Ho’omaluhia Botanical Garden

Ho’omaluhia Botanical Garden is a paradise nestled in Oahu’s windward region. 

This 400-acre garden in Kaneohe is free to visit and comes with knockout Ko’olau Mountain views. The name means “peaceful refuge”—and honestly, it fits.

You’ll wander eight tropical gardens with plants from all over, like Southeast Asia and Polynesia. There’s even a 32-acre lake with catch-and-release fishing if you want to switch things up.

7. Wahiawa Botanical Garden

Hidden away in central Oahu, wedged between mountain ranges, the 27-acre Wahiawa Botanic Garden feels like a secret you kind of want to keep.

Native Hawaiian plants mingle with tropical imports from all over—sometimes you spot something wild like rainbow eucalyptus or blue ginger, and it just stops you in your tracks.

Up top, there are paved walkways, but if you’re up for a little adventure, the lower trails turn to dirt and wind beneath a canopy of elephant apple trees and other lush greenery.

It’s quiet enough that you might hear only your own footsteps and the occasional bird calling from somewhere above.

The garden’s open every day from 9 a.m. to 4 p.m., and somehow admission is still free.