A. Naupaka kuahiwi or mountain naupaka includes several species. Some can have unripe fruits that are greenish-white or purple and white. This endemic native Hawaiian plant is unique to Hawai'i.

Scaevola gaudichaudiana is the scientific name for the most common naupaka kuahiwi of the Ko'olau Mountains. You can see and enjoy this while hiking, or you can grow it in your garden.

Or, you can see them at Lyon Arboretum in Manoa or Ho'omaluhia Botanical Garden in Kane'ohe.

When we were first developing Ho'omaluhia more than 20 years ago, naupaka kuahiwi was a frequent volunteer plant that popped up in newly bulldozed trails, and camping and planting areas. If we kept the weeds under control, the naupaka would flourish happily.

You can grow them from seeds or buy them from one of our native Hawaiian plant nurseries.

They have a "half" flower that is spoken of in many Hawaiian legends. The coastal species, naupaka kahakai, is found in Hawai'i and other Pacific islands, and is very easy to grow, The species is common and beloved in many landscapes and gardens.

Q. We want to grow naupaka kuahiwi in our Kane'ohe garden. What are some good companion plants to grow with it and make for easier insect control and lessen the need for hand-mowing? We are getting older and have a hard time with the power tools and gas lawn mower. Plus we want to save on gasoline and prevent air pollution and noise in our peaceful neighborhood — peaceful until the gangs of weed-cutting demons arrive, that is.

A. Ferns are good companion plants for your naupaka.

Pala'a and palapalai are good native Hawaiian ferns that should thrive in Kane'ohe. You also can use laua'e and fishtail ferns.

'Ohi'a lehua is another natural associate of naupaka kuahiwi. 'Uki'uki is a native blue-flowered and -fruited lily that make a nice low shrub and ground cover. Native grasses such as pili and kawelu would be a pretty and easy-to-care-for garden addition.

Visit your favorite nursery or garden fair for more ideas on making a "sustainable Hawaiian garden."

Gardenias, ti leaves and hibiscus also could go well with naupaka. Herbs and spices such as parsley, rosemary and basil would work, too.

Gingers have hefty rhizomes — underground stem-like roots that may be too aggressive for the more vulnerable native naupaka.