Tours and Activities The Waiahole Nursery and Garden Center in Kaneohe, Oahu, Hawaii offers Tours and Learning Activities for all ages and experience levels on traditional gardening, and aquaponic and hydroponic gardening. Learn about Aquaponics gardening, systems and supplies, learn about plants, plant care, water quality and testing, learn about fish, fish health and management, and much more. Attend seminars, field trips, or pre-vocational and vocational training courses, day camps, and join a volunteer group activity. Call today for cost and availability.