Green Thumb Festival: The 25th annual plant and landscape festival celebrates Arbor Day and Earth Day with an array of flowering plants, trees, orchids and herbs. There also will be garden art for sale, soil and water testing, tool sharpening, horticulture exhibits, a Children's Plant Fair, a Garden Club of St. Petersburg Flower Show (9 a.m. to 4 p.m. Saturday and 9 a.m. to 3 p.m. Sunday), recycling and more. Free; trees additional. Walter Fuller Park and Community Center, 7891 26th Ave. N, St. Petersburg. (727) 893-7441. stpete.org/parks/greenthumb.asp.
Alzheimer's caregiver support group: Families and caregivers coping with loved ones who have Alzheimer's can find answers, resources and support from peers and professionals. 10 a.m. Free. The Fountains at Boca Ciega Bay, 1255 Pasadena Ave. S, St. Petersburg. (727) 812-3930.
The NARFE Chapter 1140 spring picnic: Come prepared to discuss issues on your mind at this opportunity to meet face-to-face with congressional leaders. RSVP required to Bob or Leah Davis at (727) 214-2466 or firstname.lastname@example.org. Indicate how many people will attend. Also please indicate whether you plan to bring items to share, including chips, dips, salads, sides or desserts. All NARFE members, spouses, family members and friends are welcome. 11:30 a.m. Free. War Veterans Memorial Park, 9600 Bay Pines Blvd., St. Petersburg. (727) 258-7289. pinellascounty.org/park/23_War_Vets.htm.
Your Soul Cafe: This monthly installment fosters conversations that open hearts and inspire action. This month's theme is "Clear Life, Clear Vision." Learn to declutter your life with Kathy Mann, international feng shui expert and author. 6 to 9 p.m. $30 per person or $50 for two; students $15. The Studio@620, 620 First Ave. S, St. Petersburg. (727) 895-6620. studio620.org.
Andy Barnes at "Our Town Conversation Series": Andy Barnes, retired chairman and CEO the St. Petersburg Times, kicks off this conversation series hosted by Carol Mickett, philosopher, artist and noted area mythmaker. 6:30 to 7:45 p.m. Free (RSVP required). Dalí Museum, 1 Dalí Blvd. (Bayshore Boulevard and Fifth Avenue SE), St. Petersburg. (727) 823-3767. thedali.org.
Suncoast Dixieland Jazz Society concert: Bobby Tess and the Dixie Chaps will play. 7 to 9:30 p.m. $7. Bilmar Beach Resort, 10650 Gulf Blvd., Treasure Island. (727) 397-1875. bilmarbeachresort.com.
The Pleasure of His Company: The Gulfport Community Players present the comedy about an international playboy who returns home to give his daughter away at her wedding. 8 p.m. $15. Catherine Hickman Theatre, 5501 27th Ave. S, Gulfport. (727) 322-0316. gulfportcommunityplayers.org.
Jay Hewlett: 9:30 p.m. Coconuts Comedy Club, Tradewinds Sandpiper Resort, 6000 Gulf Blvd., St. Pete Beach. $15. (727) 360-5653. coconutscomedyclubs.com.
Poetry party: YellowJacket Press will debut new poetry collections, including books by Peter Meinke and Melissa Carroll. Laura Sobbot Ross will read from her new collection. It all takes place in the Flamingo Room of the Continuing Education Center. Call (727) 864-799. 6 to 9 p.m. $5 donation appreciated. Eckerd College, 4200 54th Ave. S, St. Petersburg. eckerd.edu.
St. Petersburg College Band concert: The 45-member concert band presents its final show of the school year, featuring works by Bach, Wagner, Handel and Fillmore. 7:30 p.m. Free. St. Petersburg College Music Center, 6605 Fifth Ave. N, St. Petersburg. (727) 341-7984.
"Exploring Enlightenment": Moving Ethos Dance Company presents a dance concert that highlights fleeting moments of humanity. 8 p.m. $15. Palladium Theater, 253 Fifth Ave. N, St. Petersburg. (727) 822-3590. spcollege.edu/palladium.
Family Fun Fishing Day: Children up to age 14 can grab a pole and try their hand at fishing. Fishing poles and bait are provided, but bring your own fishing pole if you don't want to wait. Prizes will be awarded for first catch, most fish, smallest fish and top three biggest fish. Coffee, juice and doughnuts are available for a $1 donation. Proceeds from donations will be used to buy worms for future fishing days. 8 to 11 a.m. Free. Walsingham Park, 12615 102nd Ave. N, Largo. (727) 319-8343.
Yoga Day: Yoga4All is offering free classes and free chair massages. There will be 45-minute classes starting on the hour, including Yoga for Beginners, Kundalini Yoga, Easy Yoga and Stretch, and more. Classes are available to accommodate kids to seniors and will be filled first-come, first-served. Wear loose, comfortable clothing. Chair massages will be available by donation. 9 a.m. to 4 p.m. Free. Yoga4All, 8836 Seminole Blvd., Seminole. (727) 392-9642. yoga4all.com.
MarineQuest: Annual family-friendly open house at Florida Fish and Wildlife Research Institute with science-related exhibits and activities for adults and kids. Visitors can handle animals in the touch tank, create "fish prints", make marine-related origami, have their faces painted and more. 10 a.m. to 4 p.m. Free. Florida Fish and Wildlife Research Institute, 100 Eighth Ave. SE, St. Petersburg. (727) 896-8626.
Free prom dresses: Belle of the Ball Project and Dream a Dress will provide free prom dresses, shoes, purses and accessories to low-income high school teen girls in Pinellas and Hillsborough counties. 10 a.m. to 2 p.m. Free. . Seminole Mall, 11201 Park Blvd. N, next to Ross. belleoftheballproject.com.
St. Petersburg Science Festival: There will be more than 24 booths at this fun-filled event where you can explore the wonders of hands-on science, technology, engineering and math. The event is being held in conjunction with MarineQuest. 10 a.m. Free. University of South Florida St. Petersburg, 140 Seventh Ave. (727) 803-9799, ext. 206. stpetescifest.org.
Wildlife and Western Visions Art Show: Nineteen award-winning artists from around the country will present their work in this show, including paintings, sculptures, prints and American Indian jewelry. 10 a.m. to 5 p.m. Free. Raymond James Financial Center, 880 Carillon Parkway, St. Petersburg. Toll-free, 1-888-779-2240.
Shore Acres Elementary PTA carnival: The parents and teachers of Shore Acres Elementary present this fundraiser, which includes inflatables, games, a dunk tank, a balloon artist and Doodle Doos for girls in the Carnival Salon. Includes music by the Dennis Lee Band, an auction and a raffle. 10 a.m. to 2 p.m. $15 wristband, $3 hot dog meal, $1 individual tickets. Shore Acres Elementary School, 1800 62nd Ave. NE, St. Petersburg. (727) 570-3173.
Giant beach party: The Indian Rocks Beach Homeowners Association invites everyone to come to the beach to dance in the sand to the DJ sounds of Around the Beach Entertainment hosted by Terry Newman. Beer, wine and food will be sold. Proceeds benefit the community. 6 to 11 p.m. Free. Indian Rocks Beach County Park, 1700 Gulf Blvd. (727) 517-3131.