2015 Private Gardens Tour on June 21! Posted May 29, 2014 by admin & filed under Event Highlights. Enjoy a variety of delightful private gardens in Boise. Now in its 29th year, the Garden Tour is a fundraiser for the Idaho Botanical Garden, its plants and programs. Admission: Admission: $25 Garden Members: $20 Read more Leave a Reply Click here to cancel reply. You must be logged in to post a comment.