AZ Illustrated Nature visits Pantano River Park, one of f Tucson's commemorative tree parks, where residents can get a tree planted in honor of a friend or family member. Next, a look at a local memorial park dedicated to children who have passed away. And, a conversation with Tucson Clean and Beautiful about Tucson's commemorative trees program; since the inception of the program in 1996 hundreds of trees have been planted in the Tucson community.