Harvest Festival Guided tours, tomato tastings, pesto-making demonstration, lectures with author Laura Schenone, workshop on preparing your fall garden, kids' coloring contest; from 10 a.m. to 4 p.m.. Fee: $5; $20 additional per Schenone lecture (11 a.m. and 1:30 p.m. each day); Fordhook Farm, 105 New Britain Rd., Doylestown; 215-674-4900, Ext. 1401, www.burpee.com/product/id/112411.do.

Standard Flower Show "Rhapsody in Green" with various competitive classes and divisions, displays and exhibits, presented by the Trevose Horticultural Society; 4 to 9 p.m. today and 10 a.m. to 5 p.m. tomorrow. Free. Wood River Village Auditorium, Hulmeville Road and Bensalem Boulevard, Bensalem. Information: 856-866-9163.

Tomorrow

Daylily Sale Full selection of color and sizes from Delaware Valley Daylily Society members' gardens; 9 a.m. to noon. Free. Good Samaritan Church, 212 W. Lancaster Rd., Paoli. Information: 610-316-2978.

Fall Gardeners' Market Annuals, perennials, trees and shrubs, gardening tools and items, botanical-themed jewelry, pottery and photographs for sale, sponsored by the Hardy Plant Society/Mid-Atlantic Group; 9 a.m. to 2 p.m. Free. Information: www.hardyplant.org. Freedoms Foundation, 1601 Valley Forge Rd., Valley Forge; www.freedomsfoundation.org/directions.cfm.

Heirloom Tomato Festival Book discussion and signing with author Amy Goldman (The Heirloom Tomato, From Garden to Table), workshops and lectures, tomato tastings and a hoedown; noon to 9 p.m. Free. A percentage of proceeds from Styer's Garden Cafe benefits the Fair Food Project.

Up ahead

Volunteer for Weed Patrol Learn about invasive plants and weed them from 9:30 a.m. to noon Aug. 29 at Bowman's Hill Wildflower Preserve, 1635 River Rd. (Rte. 32), New Hope. Free, includes refreshments; pre-registration suggested: 215-862-2924. To set up your own Weed Patrol program at an alternate time call 215-862-2924. Information: www.bhwp.org.