The Mercer Society Gift and Plant Shoppe: 10 a.m.-4 p.m. Tuesdays-Saturdays, 11 a.m.-4 p.m. Sundays at 400 Main, Old Town Spring; 281-651-5475, themercersociety.org/ways-to-give/donate. Sales proceeds benefit flood-damaged Mercer Botanic Gardens.
March Mart: 10 a.m.-4 p.m. at Mercer Botanic Gardens, 22306 Aldine-Westfield, Humble; 713-274-4160, hcp4.net/Community/Parks/Mercer. Free.
23rd annual Plant and Gift Sale of the Herb Society of America-Pioneer Unit: 8 a.m.-5 p.m. at Festival Hill Institute, 248 Jaster, north of Round Top; herbsocietypioneer.org. Free.
Shut Up and Plant Something: with Greg Grant. 10 a.m. at the Arbor Gate, 15635 FM 2920, Tomball; 281-351-8851, arborgate.com. Free.
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