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The Halawa Xeriscape Garden displays a series of xeric (dry) plants in a residential-scale setting to demonstrate species capable of providing a visually attractive garden, while using less water than most currently popular plants. It was opened to public in September 1989, after several years of effort by the Board of Water Supply (BWS), as a way to educate Oahu residents on ways to save water in lawns, gardens, and landscaped areas.
In these demonstration gardens, you can familiarize yourself with the kinds of plants and grasses that need less irrigation, as well as the variety of approaches that use water more efficiently in the garden. These approaches include irrigation techniques, cultural practices, and landscaping ideas that will provide for drought-tolerant gardens and landscapes.
Among the water-efficient irrigation systems demonstrated in the Halawa Xeriscape Garden are automatic timers, moisture sensors, rain shutdown devices, and low output irrigation equipment such as spray sprinkler heads, micro-spray sprinkler heads, emitters and dripper lines.
Suggested cultural practices that can save water are also seen at Halawa. These include: mulching, soil alteration, turf mowing practices, thinning of planted areas, weed control, and fertilization.
Unless otherwise posted, the garden is open on Wednesdays and Saturdays, from 9 a.m. to 3 p.m. Upon arrival, all visitors need to check-in at the Garden office window.
The Halawa Xeriscape Garden is located in Halawa Valley's Central Park Industrial Area.
Halawa Xeriscape Garden
99-1268 Iwaena Street
Aiea, HI 96701
On the first Saturday of August, the Halawa Xeriscape Garden holds its annual open house and unthirsty plant sale. Join us in Halawa for a day of fun-filled activities for the family and for keiki, educational workshops, fantastic succulent and cactus displays, great deals on drought tolerant plants and more! Be sure to mark your calendar!
Free self-guided tours and visits to Halawa Xeriscape Garden are available on Wednesdays and Saturdays from 9 a.m. to 3 p.m. All visitors must check in with security upon arrival. To request a free guided tour on days that the garden is open to the public, please contact the garden prior to your visit to make arrangements.
Educational tours of the Halawa Xeriscape Garden for schools and other groups are available by appointment. Call (808) 748-5041 or complete a tour request form online. Be sure to review the additional tour information for any applicable requirements.
Volunteers are welcome on Weedy Wednesdays and Spruce-Up Saturdays for a wide range of needed tasks:
To learn about volunteer opportunities, consider joining the Friends of Halawa Xeriscape Garden or, for more information, call (808) 748-5315.
The Halawa Xeriscape Garden hosts workshops that generally include instruction on how to xeriscape, efficient irrigation, propagating native plants that save water, soil improvement/mulching, lei-making with xeriscape plants, and wreath-making with xeriscape plants, among others. Sponsored by the Friends of Halawa Xeriscape Garden and the Honolulu Board of Water Supply, these workshops are generally scheduled on Wednesdays and Saturdays.
As of July 2014, the BWS no longer offers free mulch at the Halawa Xeriscape Garden in order to align with statewide efforts to prevent the spread of invasive pests. Mulch piles are potential breeding sites for the Rhinoceros Beetle, an invasive scarab beetle that feeds on coconut palms. For alternative free mulch giveaway sites, check with the City Department of Environmental Services (ENV).