Mostly Native Plant Sale. 9 a.m. to 3 p.m. Saturday. Benefits the nonprofit Cibolo Nature Center and Farm. Kendall County Fairgrounds, 1307 River Road, Boerne. $5 per vehicle. www.cibolo.org.
Kingsland Wildflower Festival. 9 a.m. to 5 p.m. Saturday. Includes pageant, baking contest, auction, children’s activities. Kingsland Community Park, 710 Williams Drive. www.kingslandchamber.org.
Williamson County Master Gardeners’ Spring Garden Fair. 9 a.m. to 2 p.m. Saturday. Demonstration stations, speakers, childrens’ activities and more. Williamson County AgriLife Extension Grounds, 3151 SE Inner Loop, Georgetown. Free. http://txmg.org/williamson/special-events.
Trowel and Error: Mayfield Gardening Symposium. 9:30 a.m. to 1 p.m. Saturday. Speakers include Jay White, Vicki Blachmanr and Robin Howard Moore. Mayfield Park, 3505 W. 35th St. $5. 453-7074, www.mayfieldpark.org.
Zilker Garden Festival. 10 a.m. to 5 p.m. Saturday and Sunday. Features a flower show, gardening experts, childrens’ activities and vendors. Zilker Botanical Garden, 2220 Barton Springs Road. $3-$7. www.zilkergarden.org/about/events/ZGF2013/zgf.html.
“Fire Wise Landscape Maintenance.” 11 a.m. Saturday. Buddy Burrow speaks about fire zones and more. Bastrop Gardens, 316 Old Texas 71 (Country Road 335), Cedar Creek. Free. 512-303-5672, www.bastropgardens.com.
Austin Organic Gardeners Club meeting. 6:30 p.m. Monday Molly Ogorzaly presents “Monet’s Light: An Exploration of Color.” Zilker Botanical Garden, 2220 Barton Springs Road. Free. www.austinorganicgardeners.org.
Austin Bonsai Society meeting. 7 p.m. Wednesday. Bill Boytim discusses “Life in the Soil.” Zilker Botanical Garden, 2220 Barton Springs Road. Free. 266-2655.
“Green Thumb Series.” 10 a.m. to noon Thursday . Topic is “When and How to Fertilize.” Texas AgriLife Extension Service, Travis County Office, 1600-B Smith Road. $15, registration required by calling 979-845-2604 or via https://agriliferegister.tamu.edu.
Highland Lakes Birding and Wildflower Society wildflower exhibit and program. 9 a.m. to 5 p.m. Friday and April 13. Local wildflowers on display. At 1 p.m. Friday and Saturday Bonnie Friesenhahn will give a Highland Lakes Master Gardeners presentation “Build a Beneficial Insectary with Wildflowers.” First Lutheran Church, 133 Apollo Drive, Burnet. www.yantislakesidegardens.com/events.
“Spring Dig In.” 8:30 a.m. to 2 p.m. April 13 and April 14. Build and refurbish gardens around Austin with the Green Corn Project. Meet at Soma Vida, 1210 Rosewood Ave. Register at www.greencornproject.org/dig-ins#dig-in-day.
“Care of Ornamental Trees.” 9 a.m. to 1 p.m. April 13. David Appel teaches about how to identify and manage oak wilt. Austin Community College, South Campus, 1820 W. Stassney Lane, Room 1130. $25, registration required by calling 979-845-2604 or via https://agriliferegister.tamu.edu.
“Harvesting Rainwater and Solar Energy.” 9 a.m. to noon April 13. A presentation by John Kight. Cibolo Nature Center & Farm, 140 City Park Road, Boerne. $25-$35, register at www.cibolo.org/calendar.
“Garden Fresh Cooking.” 10 a.m. April 13. Presentation by Jennifer Cayce. Backbone Valley Nursery, 4201 FM 1980, Marble Falls. Free. 830-693-9348, www.backbonevalleynursery.com.
Wimberley Garden Tour. 10 a.m. to 4 p.m. April 13. Showcasing six gardens. $15. 512-847-3595.
“Insect Traps.” 10 a.m. April 13. Sandy Justice and Shanna Ciano share tips for removing pests from gardens. The Herff Farm at the Cibolo, 33 Herff Road, Boerne. Free. www.cibolo.org/calendar.
Austin Cactus and Succulent Society Spring Show and Sale. 10 a.m. to 5 p.m. April 13 and April 14. Zilker Botanical Garden, 2220 Barton Springs Road. Free with paid admission to Zilker Botanical Garden, $1-$2. www.austincss.com/member/ShowSale.html.
“Rain Water Harvesting.” 11 a.m. April 13. Doc Jones speaks about benefits, and how to create a system. Bastrop Gardens, 316 Old Texas 71 (Country Road 335), Cedar Creek. Free. 512-303-5672, www.bastropgardens.com.
“Cooking with Thai Herbs.” 2 p.m. April 14. Cooking demonstration with Sap Apisaksiri and Mick Vann. Free. It’s About Thyme Garden Center, 11726 Manchaca Road. 280-1192, www.itsaboutthyme.com.
Austin Bonsai Society workshop. 7 p.m. April 16. Grooming bonsai for May exhibit. Zilker Botanical Garden, 2220 Barton Springs Road. Free. 266-2655.
“East Austin Garden Fair: Get Up, Get Green!” 9:30 a.m. April 20. Fair featuring demonstration activities, childrens’ crafts and more. Zaragoza Park, 2608 Gonzalez St. Free. www.tcmastergardeners.org/what/edseminars.html.
“Composting.” 10 a.m. April 20. Leslie Butterworth offers tips. The Herff Farm at the Cibolo, 33 Herff Road, Boerne. Free. www.cibolo.org/calendar.
“Want Hummingbirds? Think Lasagna.” 11 a.m. April 20. A presentation by Mark Klym. Bastrop Gardens, 316 Old Texas 71 (Country Road 335), Cedar Creek. Free. 512-303-5672, www.bastropgardens.com.
— Compiled by Veronica Serrano; email@example.com.