Spring Plant Sale, Gainesville. Flowering plants, tomatoes, peppers, cabbage and broccoli. 8 a.m. to 4:30 p.m. today and Friday, April 12-16, 19-21 and 26-30, North Hall High School Greenhouse, 4885 Mount Vernon Road, Gainesville. $1.50-$9. 770-983-7331.
Elachee's Backyard Conservation Workshop, Gainesville. Learn how to compost, store rain water and create a rain garden. 10 a.m. to noon Saturday, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. Free. Preregistration required. 770-535-1976.
Bike ride, Batesville. More than 43 miles, hilly. Chicken City Cyclists. Leave at 10 a.m. Saturday from Providence Baptist Church, 12030 Ga. 197 N., Clarkesville. firstname.lastname@example.org.
Gardens on Green, Gainesville. Hall County Master Gardeners. 1 p.m. Wednesday, Gardens on Green, 711 Green St., Gainesville.
Lunch and Learn Series, Gainesville. Hall County Master Gardeners. Wednesday, Tomato Gardening; April 14, A Potpourri of Gardening Ideas; April 21, Soil Preparation; April 28, Open Garden Forum- Annuals, Perennials & More. Free. Hall County Library Main Branch, 127 Main St. NW, Gainesville. 770-532-3311.
Spring Garden Expo, Gainesville. Hall County Master Gardeners. More than 60 vendors selling plants, garden art and products; activities for kids and "Ask a Master Gardener" information booth. 8 a.m. to 6 p.m. April 9 and 8 a.m. to 4:30 p.m. April 10, Chicopee Woods Agricultural Center, 1855 Calvary Church Road, Gainesville. Free admission and parking. 770-535-8293.
Bike ride, Helen. 58 mile bike ride. Chicken City Cyclists. 10 a.m. April 10, La La's at Tanglewood, 3318 Ga. 356, Helen. email@example.com.
Fallen Heroes of Georgia Memorial Run/Walk, Buford. 10K, 5K and 1K races. 2011 Peachtree Road Race Qualifier. 9:10 a.m. April 10, Lake Lanier Islands Resort, 7000 Holiday Road, Buford. Preregistration $12-$20; day of race registration $15-$25. 678-794-6135.
"Everything Old is New Again," Gainesville. Jeanne Heyser will talk about the latest trends in flower design. Gainesville Garden Club Council. 1 p.m. April 12, Quinlan Visual Arts Center, 514 Green St., Gainesville.
Master Naturalist Program, Gainesville. Learn about the habitats and ecosystems of Georgia. 12:30-5 p.m. Tuesdays April 13-May 25, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. $125 for all sessions, field trips and materials. Participants must be 18 and older. 770-535-1976 or firstname.lastname@example.org.
Stray Pet Strut, Gainesville. Benefits the Humane Society of Northeast Georgia. 5K and 1 mile Family Fun Walk. 2 p.m. April 18, American Legion Post, 2342 Riverside Drive, Gainesville. Pets can walk with participants if they are vaccinated, leashed and in good physical condition. Preregistration by April 13, $20; day of race registration $25. 770-532-6617.
Stars Over Elachee at Chicopee Lake, Gainesville. Learn about astronomy and how to use a telescope to view the night sky. For adults and children 8 and older. Bring a flashlight and pencil. Reservations required. 7:45-9:45 p.m. April 18, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. $10 adults, $5 children age 2-12, free for Elachee members. 770-535-1976.
Triathlon Club, Gainesville. No experience necessary. Meets 7 p.m. second Tuesdays, Fit 2 Tri Store, 1292 Thompson Bridge Road, Gainesville. 770-712-9129 or email@example.com.
ISI Cycling ride, Gainesville. 35-45 mile ride. No ride in rain or temperature less than 36 degrees. 1 p.m. Sundays, Kroger Shopping Center, 3630 Thompson Bridge Road, Gainesville. 678-231-0417.