Plant sale Shrubs, woody perennials, annuals, vegetables, herbs, water-garden plants; 9 a.m. to 3 p.m. Free. Master Gardeners of Montgomery County, Montgomery County Extension Office, 1015 Bridge Rd., Collegeville; 610-489-4315; http://montgomery.extension.psu.edu.

Tomorrow and Sunday,

May 18

Native plant sale Wildflowers, vines, ferns, shrubs, trees; 10 a.m. to 4 p.m. tomorrow and Sunday. Free. Bowman's Hill Wildflower Preserve, 1635 River Rd. (Route 32), New Hope; 215-862-2924; www.bhwp.org.

Volunteer to Maintain High School Park, 10 a.m. to noon tomorrow and 1 to 3 p.m. Sunday. Free; RSVP appreciated. Sign-up/information: 215-663-5911; volunteer@fhsp.org. Meet at park shed, High School Road and Montgomery Avenue, Elkins Park. Wear long work pants, long-sleeved shirt, sturdy shoes, bring garden gloves if available.

Monday, May 19

Attracting Birds to the Garden, program with master gardener Carolyn Booker; 6 to 7 p.m. Free; preregistration required: citygardening@pennhort.org; 215-988-8872. Dickinson Square Park, Parsons Building, Fourth and Tasker Streets. Information: www.pennsylvaniahorticulturalsociety.org.

Flower Arranging From Your Garden, program with florist Marie Bushnell (of Flowers by Marie) at the Trevose Horticultural Society meeting; 7:30 p.m. Fee: $3. Wood River Village Auditorium, Hulmeville Rd. and Bensalem Blvd., Bensalem. 856-866-9163.

Wednesday, May 21

Four-Season Containers: Gardens with Year-Round Pizzazz, workshop for adults with garden designer Michael Bowell (of Make a Scene); 10 to 11:30 a.m. Fee: $20; preregistration required. Camden Children's Garden, 3 Riverside Dr., Camden; 856-365-8733; www.camdenchildrensgarden.org.

Explore the Plants of the Delaware Piedmont, botanist William McAvoy discusses common and rare species; 5:30 to 7:30 p.m. Fee: $25; preregistration required. Mount Cuba Center, 3120 Barley Mill Rd., Hockessin; 302-234-4244, www.mtcubacenter.org.

Thursday, May 22

Standard flower show, horticultural division with displayed specimens and design division in several categories; sponsored by the Garden Class of the Women's Community Club of Uwchlan; 3 to 6 p.m. Free. Uwchlan Meeting House, Routes 100 and 113, Lionville; 610-942-7501; vbrauckman@comcast.net.

Up ahead

Native flowering shrubs class with slides, outdoor tour; 10 a.m. to 1 p.m. May 24 at Bowman's Hill Wildflower Preserve, New Hope. Fee: $15; preregistration suggested: 215-862-2924; wear comfortable shoes, dress for weather.