Part of the National Tropical Botanical Garden, Limahuli Garden, at the northern end of Kauai, focuses on tropical plants’ conservation, research and public education. (Gail Fisher / LAT)
A St.Thomas bean vine envelops a tree, forming a dense canopy for strollers in the McBryde Garden. (Gail Fisher / LAT)
Kauai’s Waimea Canyon, accessible from Hawaii Highway 550, is 10 miles long and as deep as 3,000 feet. (Mark Boster / LAT)