GARDENING Events This Week CREATING EXCITING CACTUS GARDENS. Civano Nursery. 5301 S. Houghton Rd. 546-9200 ext. 9. Sculpt the architecture of your garden and learn how to make bold statements with cacti on Saturday, October 19 at 9 a.m. Meeting is free. HANGING BASKETS FOR FALL AND WINTER COLOR. Pima County Cooperative Extension. 4210 N. Campbell Ave. 626-5161. Free demonstrations given on Wednesday, October 23 at 9 a.m. and repeated again at 1 p.m. at Wilmot Library. Upcoming TUCSON WATER GARDENERS. Tucson Botanical Gardens. 2150 N. Alvernon Way. 326-9686. Those interested in ponds and water gardening are invited to monthly meetings on the fourth Thursday of the month at 7:30 p.m. Leopard Frogs and other native species are discussed at the October meeting by Phil Rosen. Announcements COMMUNITY GARDENS OF TUCSON. Start Fall gardening in a plot to suit your needs and a location near you and share seeds, plants and experience with other gardeners. $10 a month covers water costs. Call 795-8823 to reserve a plot.