Kauai Garden Tours Take a walk in the fabulous Limahuli Valley as you learn about the native plants of Hawaii. This incredible north shore garden contains all the indiginous plant life of ancient Kauai. Take a tour and learn how the Hawaiian people made use of the islands resources. National Tropical Botanical Gardens - Limahuli Garden & Preserve Nearly 1,000 acres of gardens in the Limahuli Valley on the north shore of Kaua'i. Tues.-Fri. and Sunday 9:30am - 4pm. Call for reservations (808) 826-1053 National Tropical Botanical Gardens -  Allerton Garden  More than 100 acres of oceanfront in the Lawai Valley on the south shore of Kaua'i  Reservations required  (808) 742-2623 Smith's Tropical Paradise Discover 30 acres of flowers, fruits and foliage highlighted by fish-filled lagoons. In the Wailua River Valley