Keahua Arboretum is an informal grove and picnic area in Kapaʻa, on Kauaʻi, with rainbow eucalyptus, forest trails and a stream. The trees’ colorful bark is the main draw, and a short walk lets you see several up close. Bring lunch for a break at the picnic tables, or follow the stream to natural pools for a dip. Trails can turn muddy after rain, and signage is limited, so wear sturdy shoes and check your route before setting out.
Finding the grove
Keahua Arboretum is in Kapaʻa, where the paved road ends. The drive from State Highway 56 takes more than 30 minutes each way. Directions can be unclear near the arboretum, so look for an old bridge; parking is available on both sides.
The grove has several rainbow eucalyptus trees, known for their colorful bark. A short walk through the forest is enough to see them up close. Monkeypod and mango trees also grow here. The area is part of the Līhuʻe-Kōloa Forest Reserve.
Trails, stream and picnic area
This is an informal outdoor area, with trails, picnic tables and shelters beside a stream. You can make a brief stop to see the trees or spend a few hours picnicking and walking. Natural pools along the stream provide places to cool off.
The paths can be muddy after rain, so sturdy footwear is useful. Signage is limited, and the restrooms are rustic. Bring your own food, since options nearby are limited.
Caring for the forest
Rapid ʻŌhiʻa Death is present in the area. Clean your shoes when you leave to help avoid carrying the disease beyond the arboretum. Treat the trees with care; some have been defaced.
FAQ
How long should you spend at Keahua Arboretum?
You can see the rainbow eucalyptus in about 20 minutes. Add time for a picnic, a walk or a dip in the stream.
Can you swim at Keahua Arboretum?
Natural pools along the stream are places to take a dip. The water is described as cool.
What should you bring to Keahua Arboretum?
Bring lunch or snacks and sturdy shoes, especially after rain, when trails can be muddy. Clean your shoes when leaving to help prevent the spread of Rapid ʻŌhiʻa Death.
Where is parking at Keahua Arboretum?
Parking is available on both sides of an old bridge near the arboretum. Directions and signage can be unclear.
