Welcome our newest addition to our Reciprocal Garden Network: The University of Idaho Arboretum & Botanical Garden! The University of Idaho Arboretum & Botanical Garden located on the University of Idaho’s campus boasts 63-acres of more than 17,000 plants and over 2,400 different taxa. Enjoy free entry with your AHS membership card. uidaho Photo via uidaho.edu #AHSgardening #AmericanHorticulturalSociety #AHSReciprocalGardenNetwork #GardenSpotlight