Living Lab Field Studies: Building Healthy Desert Soils — Watershed Management Group, 1137 N. Dodge Blvd. Learn how to assess soil types, identify soil profiles and perform a soil percolation test to effectively build soil health and promote a productive urban landscape yard. Registration required. 4-7 p.m. Dec. 14. $30. 396-3266, Ext. 22.

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. Noon-4:30 p.m. Sundays; 9:30 a.m.-4:30 p.m. Tuesday-Saturday. 1-502-303-3945.

Luminaria Nights — Tucson Botanical Gardens, 2150 N. Alvernon Way. View 2,000 candlelit luminarias and a special holiday light show, local musicians, dancers and school groups. 5:30-8:30 p.m. 8-10. 326-9686.

Tuesday

Floral Candles — Martha Cooper Public Library, 1377 N. Catalina Ave. A demonstration of techniques and make one floral candle to take home. Registration required. 2-3 p.m. Dec. 12. 594-5315.

Solving Garden Problems — El Rio Public Library, 1390 W. Speedway. Learn how to identify problems in a landscape and vegetable garden, and the best researched-based methods of dealing with them. 4-5:30 p.m. Dec. 12. 594-5245.

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. 13 and 16. 626-5161.

Thursday

Living Lab Field Studies: Building Healthy Desert Soils — Watershed Management Group, 1137 N. Dodge Blvd. Learn how to assess soil types, identify soil profiles and perform a soil percolation test to effectively build soil health and promote a productive urban landscape yard. Registration required. 4-7 p.m. Dec. 14. $30. 396-3266, Ext. 22.

Friday

Friday Fun Knitters — Foothills Mall Food Court, 7401 N. La Cholla Blvd. Knit, crochet and needlework. 9:45-11:30 a.m. Dec. 15. 297-1745.

Is it A Cactus or A...sparagus — Saguaro National Park East, 3693 S. Old Spanish Trail. Learn the difference between the two most famous families of desert plants on a short stroll. 10-10:30 a.m. Dec. 15. 733-5153.

Saturday

Master Gardener Presentation: Container Gardening — Eckstrom-Columbus Public Library, 4350 E. 22nd St. See how gardening in raised beds or other containers saves water, keeps away critters and minimizes strain on knees and back. 10-11:30 a.m. Dec. 16. 594-5285.