A Blue Star Museum — Tohono Chul, 7366 N. Paseo Del Norte. 8 a.m.-5 p.m. daily until Sept. 2. $8; free for active military and their families. 742-6455.
Free Garden Tour — Pima County Cooperation Extension, 4210 N. Campbell Ave. The Pima County Master Gardeners will offer free guided tours at the gardens . Groups over eight register in advance. 8 a.m. Aug. 21. Free. 626-5161.
Knit & Crochet Women’s Club — Sister Jose Women’s Shelter, 18 W. 18th St. In historic Barrio Viejo, club offers fellowship in a comfortable, air-conditioned home, open to the public. 10-11 a.m. every fourth Wednesday. Free. 909-3905.
Guest Lecture Series — The Minimalist’s Lawn Guide — UA/Pima County Cooperative Extension, 4210 N. Campbell Ave. David Kopec of the University of Arizona Department of Plant Sciences will discuss grass selection, grass establishment (seed, sod, plugs), mower type and grass heights, fertilizer calendar, how to use a monkey grinder (hand rotary applicator), sprinkler pattern and lawn size. 10:30 a.m.-noon. Aug. 21. Free. 626-5161.
The Tucson Water Gardeners Monthly Meeting — Junior League of Tucson, 2099 E. River Road. Speaker and time for questions and answers regarding pondings and aquatic plants. 7:30-9 p.m. fourth Thursday of the month. Free. 760-5565.
Friday Fun Knitters — Foothills Mall, 7401 N. La Cholla Blvd. Knitters of any skill level are welcome. Meet at the food court. 10 a.m. Fridays. Free. 293-0781.
Urban Yarns @ the Library — Joel D. Valdez Main Library, 101 N. Stone Ave. Bring your hooks, needles and lunches for an informal weekly gathering. No instruction is provided. 11 a.m.-1 p.m. Free. 791-4010.
Canyon Quilters — Kirk-Bear Canyon Library, 8959 E. Tanque Verde Road. Bring your project or preview other quilters’ works in progress. Noon-3 p.m. Fridays. Free. 594-5275.
Dig In! Library Plaza Planter Project — Joel D. Valdez Main Library, 101 N. Stone Ave. Anyone interested in joining in this beautification effort, should attend this or one of the other scheduled planting design workshops. No gardening experience is necessary. Mentors and other resources provided. Noon-1 p.m. Aug. 23. Free. 791-4010.
What’s Wrong With My Garden? — Joyner-Green Valley Library, 601 N. La Cañada Drive, Green Valley. Diagnose and treat common pests and diseases in your garden. Space is limited and reservations are required. 9-10:30 a.m. Aug. 24. Register online at communityfoodbank.com/gardenworkshops Free. 594-5295.