For gardeners and other plant-lovers, here's a sampling of regional events:

Blooming Bash! National Public Garden Celebration Outdoor reception w/refreshments & light fare. Swarthmore College - Scott Arboretum, 500 College Ave., Swarthmore; 610-328-8025. 5/11. 4-6 pm.

Bucks County Designer House & Gardens Premier designers & landscapers revitalize an 1850s Dutch Colonial house, barn & pool into a timeless Bucks County estate. Bucks County Designer House & Gardens, 3864 Spring Valley Rd., Doylestown; Reservations recommended: 215-345-2191. www.buckscountydesignerhouse.org/. $20-$25. 5/11.

Container Gardening 101 Presentation by Tina Sottolano of Bucks Country Gardens. Bucks County Designer House & Gardens, 3864 Spring Valley Rd., Doylestown; 215-345-2191. 5/16. 1-2 pm.

Explore Hardy Native Orchids Field Trip Overview of the Center's native orchids, followed by a trip to a natural orchid site in the region. Mt. Cuba Center, 3120 Barley Mill Rd., Hockessin; Registration required: 302-239-4244. $30. 5/12.

From Seed to Harvest: Garden Volunteer Workday Lend a hand with various gardening projects. Las Parcelas Garden, Main & Gay Sts.; 215-278-2498. www.myneighborhoodproject.org. 5/12. 10 am-3 pm.

Haddonfield Garden Club Herb Sale Herbs, perennials, garden accessories, baked goods & more. Kings Court, Kings Hwy., Haddonfield. www.haddonfieldgardenclub.com. 5/12. 9 am-3 pm.

Master Gardener Assocation of Camden County Cash & Carry Perennial Sale Plant sale. Rutgers Cooperative Extension of Camden County, 1301 Park Blvd., Cherry Hill. $7-$12 per plant. 5/12. 9 am-12 pm.

Members' Plant Exchange & Sale Members can donate three plants & receive a new one in exchange, or buy various plants for just $1 each. Swarthmore College - Scott Arboretum, 500 College Ave., Swarthmore; 610-328-8025. Included with membership. 5/12. 10 am.

National Public Gardens Day Free admission to the center's gardens. Mt. Cuba Center, 3120 Barley Mill Rd., Hockessin. 5/11. 10 am-3 pm.

Native Plant Sale A variety of native plants will be on display & available for purchase. Peace Valley Nature Center, 170 Chapman Rd., Doylestown. 5/12.

Native Plant Sale A variety of native plants will be on display & available for purchase. Bowman's Hill Wildflower Preserve, 1635 River Rd., New Hope; RSVP at 215-862-2924. 5/12.

Native Plants Program on the benefits of incorporating native plants into your garden. Floral & Hardy, 4007 Skippack Pike, Skippack. 5/16. 6:30 pm.

Pam's Herb Workshop Class on growing & using various kinds of herbs. Terhune Orchards, 330 Cold Soil Rd., Princeton. 5/12. 10:30-11:30 am.

Plant and Bake Sale and Flea Market Proceeds from this sale benefit community services & the Jane Parr Scholarship Fund. Lower Bucks Masonic Hall, Heacock Rd., Morrisville. 5/12. 9 am-2 pm.

Second Saturdays: Herbs & Plant a Beverage Garden Learn how to cultivate various kinds of herbs, then plant a 'beverage garden' to take home. Penn State Extension, Delaware County, 20 Paper Mill Rd., Springfield. $20. 5/12. 10 am-12 pm.

Spring Wildflower Tour Wildflower walk. Mt. Cuba Center, 3120 Barley Mill Rd., Hockessin; Registration required: 302-239-4244. $5. 5/11.

Swarthmore Garden Club Herb Sale Wide selection of herbs, perennials, tomato plants, homemade breads & more. Swarthmore Borough Hall, 121 Park Ave., Swarthmore; 610-543-4418. 5/12. 8:30-12:30 pm.

The Four Season Garden Presentation on what to plant in order to have flowers blooming throughout the year. Haddonfield Public Library, 60 Haddon Ave., Haddonfield; Registration suggested: 856-429-1304. 5/16. 7 pm.

Walk the Natural Lands of the Mt. Cuba Center Guided walk around Mt. Cuba's grounds & trails. Mt. Cuba Center, 3120 Barley Mill Rd., Hockessin; Registration required: 302-239-4244. $10. 5/17.

Send information about gardening and horticultural events to gardenscoop@phillynews.com. Include a contact phone number and send at least two weeks before the event.