Plants for Dad: 9 a.m.-2 p.m. today, Bay Gardens, 9107 N Taylor Road, Seffner. Father's Day plant sale with seminars on choosing the best plants based on location, watering needs, fertilization, plus how to treat common pests and plant diseases. Free admission. (813) 681-6101. baygardens.org.
Butterfly, Herbs and Native Plant Fair: 10 a.m.-4 p.m. today; 10 a.m.-3 p.m. Sun., USF Botanical Gardens, 12210 USF Pine Drive, Tampa. Plant sale includes talks on starting a butterfly garden, 11 a.m. and 1 p.m. today; backyard habitat workshop, 10 a.m. today; native plant talk, noon today. Book-signing with Linda Taylor, author of Great Women Exploring Nature: How Wild Florida Influenced Their Lives, 10 a.m.-3 p.m. Sunday, plus botanical art, butterfly house, caterpillar petting zoo, other kids' activities. $4; younger than 12 free. (813) 974-2329.
Nature Walk: 10-11 a.m. today, Fort De Soto Park, 3500 Pinellas Bayway S, Tierra Verde. Nature walk, suitable for families, explores different areas of the park. Registration required. Free. (727) 582-2267.
Rain Barrel Workshop: 11:30 a.m. today, Sunken Gardens, 1825 Fourth St. N, St. Petersburg. Recycle a plastic barrel to collect rainwater for garden use; limited space, registration required. $28, includes rain barrel. (727) 551-3100.
Fantasy African Violet Club: 1 p.m. today, Enrichment Center at Oak Hill Hospital, 11375 Cortez Blvd., Spring Hill. Club meets; information on growing violets and gesneriads. Open to all. (352) 398-1679.
Brooker Trail Hike: 9-11 a.m. Saturdays, Brooker Creek Preserve, 3940 Keystone Road, Tarpon Springs. Along Environmental Education Center trails; for adults and youth ages 7 and older. Free. (727) 453-6800.
Weedon Mangrove Hike: 9-11 a.m. Saturdays, Weedon Island Preserve, 1800 Weedon Drive NE, St. Petersburg. Through coastal mangrove and upland ecosystems. For adults and youth ages 6 and older. (727) 453-6500.
Upgrading With Rainbarrels: 7 p.m. Mon., Colonial Hills Civic Hall, 3852 Prime Place, New Port Richey. Elfers Centennial Garden Club meets; program on using water-saving rainbarrels to upgrade an irrigation system. Free. (727) 815-8992.
Flowers in Florida: 10 a.m. Tue., Forest Oaks Government Plaza, 7479 Forest Oaks Blvd., Spring Hill. Extension Service class on flowering perennials. Free, but first come, first seated. (352) 754-4433.
Tree Pruning: 9:30 a.m. Wed., Rigsby Recreation Center, 605 Second St. N, Safety Harbor. Arborist Mark Hughes teaches the proper methods of pruning to prevent damage while preparing trees for storm season at the meeting of the Safety Harbor Garden Club. (813) 891-0555.
Reducing Water Use: 7 p.m. Wed., Hillsborough County Extension Office, 5339 CR 579, Seffner. Learn ways to reduce water use at program by Sylvia Durrel of the Southwest Florida Water Management District, at the meeting of the Suncoast Native Plant Society. Free. (813) 908-9398.
Tampa's Urban Forest: 9 a.m.-1 p.m. Thur., Tampa Convention Center, 333 S Franklin St., Tampa. Learn about the value, benefits, current condition and future of Tampa's trees and urban forest areas in Symposium on Community Trees and the Urban Forest seminar. Free, but registration required. Register by e-mailing email@example.com or by phone. (813) 931-2608.
Wetlands Nature Walk: 9-10:30 a.m. June 21, John Chesnut Park, 2200 East Lake Road, Palm Harbor. Discover plants found in wetlands and pine flatwoods, explore views of Lake Tarpon in guided nature walk. Free, but registration required. (727) 669-1951.
Hurricanes & Trees: 10 a.m. June 21, Hernando County Cooperative Extension Service, 19490 Oliver St., Brooksville. Learn to trim and protect trees from hurricane damage; the best trees to plant to withstand strong winds. Free. (352) 754-4433.
Orchids 101: 10 a.m.-noon June 21, Marie Selby Botanical Gardens, 811 S Palm Ave., Sarasota. Class for orchid novices shows easy ways to care for orchids; tour orchids in greenhouse. $45. (941) 366-5731, ext. 239. selby.org.
Edible Gingers: 11:30 a.m. June 21, Sunken Gardens, 1825 Fourth St. N, St. Petersburg. Horticulture program on landscaping with edible ginger plants. Included in admission: $8 adults, $6 seniors, $4 kids 2-11, members free. (727) 551-3102.
Brooker's Upland Ecosystems: 1-3:30 p.m. June 21, Brooker Creek Preserve, 3940 Keystone Road, Tarpon Springs. Discover Brooker Creek's diverse environments and ecosystems, from flatwoods to oak hammocks and more, at program with outdoor field session; best for adults. Wear closed shoes, long pants, hat, bring water. Free, but registration required. (727) 453-6800.
Adding Wildlife Shelters: 2-3 p.m. June 21, Weedon Island Preserve, 1800 Weedon Drive NE, St. Petersburg. Create a harbor and shelter for wildlife in the yard in "Creating Cover: Adding Hiding Places for Wildlife" workshop. Registration required. Free. (727) 453-6500.
Send submissions to Garden Calendar, Newsfeatures, St. Petersburg Times, P.O. Box 1121, St. Petersburg, FL 33731; e-mail firstname.lastname@example.org, or fax (727) 892-2327. Deadline is two weeks before publication.