Rainwater Harvesting Class Tucson Water Rebate — Watershed Management Group, 1137 N. Dodge Blvd. A brief tour of water harvesting features on site, an introduction to rainwater harvesting, information about the Tucson Water Rainwater Harvesting Incentives Rebate Program. Register online at watershedmg.org. 3-6 p.m. Dec. 21. 396-3266, Ext. 22.

Rainwater Harvesting Class Tucson Water Rebate: Watershed Management Group

All events are free or included in the cost of admission unless otherwise noted.

Sunday

Fall Opening — Yume Japanese Gardens of Tucson, 2130 N. Alvernon Way. Tea ceremonies, art and handicrafts exhibits and classes in traditional customs such as Japanese flower arranging. 9:30 a.m.-4:30 p.m. Tuesday-Saturday; Noon-4:30 p.m. Sundays. 1-502-303-3945.

Tuesday

Glorious Cold-Weather Gardens — Dussenberry-River Public Library, 5605 E. River Road. Learn how to have a wintertime garden. Ages 12 and up. 2-3:30 p.m. Dec. 19. 594-5345.

Tucson Organic Gardeners Monthly Meeting — St. Mark’s Church, 3809 E. Second St. Tomatoes. 7-9 p.m. Dec. 19. 749-9429.

Wednesday

Demonstration Garden Tours — Pima County Cooperative Extension, 4210 N. Campbell Ave. A walk with a master gardener through the gardens. Meet at the plant clinic sign. 9-10 a.m. Dec. 20 and 23. 626-5161.

Thursday

Rainwater Harvesting Class Tucson Water Rebate — Watershed Management Group, 1137 N. Dodge Blvd. A brief tour of water harvesting features on site, an introduction to rainwater harvesting, information about the Tucson Water Rainwater Harvesting Incentives Rebate Program. Register online at watershedmg.org. 3-6 p.m. Dec. 21. 396-3266, Ext. 22.

Friday

Friday Fun Knitters — Foothills Mall Food Court, 7401 N. La Cholla. Knit, crochet and needlework. 9:45-11:30 a.m. Dec. 22. 297-1745.

Is it A Cactus or A...sparagus — Saguaro National Park East, 3693 S. Old Spanish Trail. Come learn the difference between the two most famous families of desert plants on this short stroll in the cactus garden. 2-2:30 p.m. Dec. 22. 733-5153.