• Join a rain harvesting class led by the Arlington Men’s Garden Club, 10 a.m.-noon Saturday, May 31, at River Legacy Living Science Center. 703 N.W. Green Oaks Blvd., Arlington. Fee for take-home rain barrel is $40. Space is limited. 817-860-6752. www.riverlegacy.org
• Learn the basics of landscape design during a free clinic at 10:15 a.m. Saturday, May 31, at all Calloway’s stores. www.calloways.com.
• Get your gardening questions answered any weekday with a call to the Tarrant County Master Gardener Association help desk, 817-884-1944. Call 8:30 a.m.-4:30 p.m. Monday-Friday with your horticultural questions.
• Johnson County Master Gardeners answer gardening questions and give horticultural advice 9 a.m.-4 p.m. Fridays. Simply call the Johnson County Extension Office at 817-556-6370 and ask to speak to a master gardener. If a solution can’t be provided immediately, your question will be researched.
Mark your calendar …• For the North Texas Daylily Society’s “Stars of the Garden” event, 10 a.m.-4 p.m. June 7 in Oak Hall at the Fort Worth Botanic Garden Center, 3220 Botanic Garden Blvd., Fort Worth. Planting tips, lectures and door prizes. www.northtexasdaylilysociety.org
• For the Arlington Gem and Mineral Club’s show, June 7 and 8, at the Grapevine Convention Center, 1209 S. Main St., near downtown Grapevine. On sale will be fossilized plants and decorative items for the garden. Admission $6, $3 seniors and kids ages 6-12. www.agemclub.com
• For BRIT’s First Saturday program, featuring Green Revolution students from the Fort Worth school district and many kid-friendly activities and programs, beginning at 8 a.m. June 7. brit.org
• For the second annual EcoScape Residential Summer Landscape Contest, sponsored by the Botanical Research Institute of Texas and KXAS/Channel 5, June 14-Aug. 16. For details, including criteria and eligible cities, visit http://fortworthtexas.gov/EcoScape/.
• For Texas A&M AgriLife Extension’s Earth-Kind modular horticulture and master gardener classes on occasional Saturdays through December. The classes, which cover botany, horticulture, plant propagation and more, will be in Fort Worth and other cities in North Texas. Space is limited, so pre-registration is recommended. For more information, call 817-884-1944 and ask for Steve Chaney, or visit http://tarrantmg.org for the schedule of classes.