Lyon Arboretum
Lyon Arboretum is a 194-acre botanical research garden nestled in the lush Manoa Valley of Oahu. Managed by the University of Hawaii, it houses over 5,000 plant species from across the tropics and is dedicated to conservation, education, and public enjoyment. With rainforest trails, waterfall views, and diverse flora from around the world, this serene oasis is a must-visit for nature lovers and plant enthusiasts alike.
Lyon Arboretum, Oahu
Located at the northern end of Manoa Valley (at the start of the trail to Manoa Falls), the 194-acre Lyon Arboretum offers visitors a chance to experience the richness and diversity of the islands' native and non-native vegetation in a tranquil environment. More than 5,000 tropical plant species inhabit this area, owned and operated by the University of Hawaii. The Lyon Arboretum functions simultaneously as a research facility, preservation site and visitor attraction; it is a place not to be missed if you're a horticulture enthusiast.
The Lyon Arboretum was established by the Hawaii Sugar Planters Association in 1918 and became part of the University of Hawaii in 1953. During the arboretum's early years, a young botanist named Dr. Harold L. Lyon planted upwards of 2,000 tree species on the grounds. Over the years he nurtured and developed the site until his death in 1957, the year the site adopted the name Lyon Arboretum. Here you'll encounter an impressive range of plants, including aroids, heliconia, ginger, ti and many tropical palm varieties. With an average annual rainfall of 165 inches, the Lyon Arboretum provides the perfect climate for an incredible diversity of tropical plant life. In recent years the arboretum's curators have dedicated their efforts toward preservation and conservation of Hawaii's native endangered plant species.
Avid hikers and outdoor enthusiasts are encouraged to explore the arboretum on foot. Well-marked trails take visitors on a fascinating tour of plants and trees from different corners of the world, including Asia, Europe and the Americas. Hikers are rewarded with spectacular views of sites such as Aihualama Waterfall, Inspiration Point and the many gardens that occupy the grounds. These include the Beatrice H. Krauss Ethnobotanical Garden, the Hawaii Plants Section, the Economic Botany Section and the Tropical Palms Garden. In addition visitors are likely to spot colorful bird species such as cockatoos, white-rumped shama trhushes, mejiro, Brazilian cardinals, bulbuls and mynas.
Key Features of Lyon Arboretum
- Rainforest research garden: The only university-affiliated botanical garden located in a tropical rainforest in the U.S.
- Diverse tropical plant collection: Features over 5,000 plant species, including palms, gingers, heliconias, and endangered Hawaiian plants.
- Educational and conservation focus: Operated by the University of Hawaii as a hub for botanical research and restoration.
- Hiking trails and waterfalls: Scenic trails lead to Inspiration Point, Aihualama Falls, and specialized gardens.
- Location: 3860 Manoa Road, Honolulu, HI 96822
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Frequently Asked Questions
What is the Lyon Arboretum known for?
It is known for its tropical rainforest setting, botanical research, and vast collection of tropical and native Hawaiian plants.
Where is it located?
Lyon Arboretum is located at 3860 Manoa Road, Honolulu, HI 96822, at the back of Manoa Valley.
Can I hike there?
Yes, there are well-maintained hiking trails that lead to scenic viewpoints and waterfalls like Aihualama Falls.
Who manages the arboretum?
It is operated by the University of Hawaii and serves as a research and education center for tropical botany and conservation.
What is the weather like?
Located in a rainforest, the area receives over 165 inches of rain annually - bring a rain jacket and wear sturdy shoes.