By Joel M. Lerner
Saturday, April 24, 2010; E01
Springtime offers the perfect opportunity for gardening aficionados to take advantage of lectures, workshops, tours and other educational programs. Before you plan an outing, call to ascertain if preregistration is required. If a fee is not shown, the event is free.
-- April 24: 18th Annual Garden Fair. Extensive selection of unusual plants, supplies, books, art, family activities and more. 9 a.m.-4 p.m. U.S. National Arboretum, 3501 New York Ave. NE, 202-245-4521, http://www.usna.usda.gov.
-- April 24: Rhododendron and azalea displays by Potomac Valley Chapter, American Rhododendron Society. 9 a.m.- 5 p.m. National Arboretum.
-- April 25: Serene Sundays. Stroll the mansion and spring gardens. 1-5 p.m. Washington Hillwood Estate, Museum & Gardens, 4155 Linnean Ave. NW, 202-686-5807, http://www.hillwoodmuseum.org.
-- April 27: Hanging Basket Workshop. Horticulturist Gene Sumi shares the art of designing and planting hanging baskets. Supplies provided. 1-3 p.m. $45. Hillwood.
-- April 30, May 1-2: Potomac Bonsai Festival. Annual festival including demonstrations, lectures, workshops, exhibits and vendors. Potomac Bonsai Association members and visiting bonsai artists share their expertise. 9 a.m.-5 p.m. National Arboretum.
-- May 1: Fourth Annual Herb Day. Discover the significance of herbs and the many ways we can use them in our lives safely and creatively for health, beauty and culinary enjoyment. 10 a.m.-4 p.m. United States Botanic Garden, 100 Maryland Ave. SW, 202-225-8333, http://www.usbg.gov.
-- Saturdays in May: Stroll the National Garden. View trees and shrubs of the mid-Atlantic region and learn what will grow well in your garden. 1-2 p.m. U.S. Botanic Garden.
-- Mondays in May: Lunchtime Tour of Conservatory. Guides connect the exotic plant world to everyday life. Noon-1 p.m. U.S. Botanic Garden.
-- May 4: Floral Design Workshop. Adrienne Summers, AIFD, helps design arrangements. Supplies are provided. 10 a.m.-Noon. $45. Hillwood.
-- May 4: Spring Shower of Flowers. Rance Goff directs a demonstration of arranging. 7 p.m. $35. Tudor Place Historic House and Garden, 1644 31st St. NW, 202-965-0400, http://www.tudorplace.org.
-- May 7: National Public Gardens Day. Activities showcase the role of public gardens in promoting environmental stewardship and education. 10 a.m.-5 p.m. U.S. Botanic Garden.
-- May 7: National Public Gardens Day. Tour gardens with Jody Fetzer, garden supervisor. 3-3:30 p.m. Hillwood.
-- May 7- 8: Flower Mart. Plant sale and family activities focusing on the culture of Ukraine. 10 a.m.-5 p.m. Washington National Cathedral, Wisconsin and Massachusetts avenues NW, http://www.allhallowsguild.com.
-- May 8: Summer-Proof Container Garden. Choose heat- or drought-tolerant succulents to create container gardens with colorful foliage and unusual forms that thrive on neglect. 2-4 p.m. $45. National Arboretum.
-- May 9: Azalea Collection Walking Tour. Join this tour through thousands of blooming azaleas, learn their origins and receive expert advice. 10 a.m.- noon. $12. National Arboretum.
-- May 15: Tour Tudor Place and Dumbarton Oaks. Guided tour of historic gardens with horticulturist and director of gardens and grounds. 10:30 a.m. $15. Meet at Tudor Place Visitors Center.
-- May 22: Bonsai Basics. All-day class for beginners. Plant, pot, soil and wire are provided, and some tools are available. 9 a.m.-4 p.m. $129. National Arboretum.
-- April 24: Seedling Flower Show, sponsored by Seedling Garden Club. 9 a.m.-4 p.m. Brookside Gardens, 1800 Glenallan Ave., Wheaton, 301-962-1400, http://www.brooksidegardens.org.
-- April 24-Sept. 19: Conservatory Summer Display -- Summer of Food. Daily, 10 a.m.-5 p.m. Brookside.
-- April 27-28: Beginning Vegetable Gardening. Twelve steps to starting a vegetable garden, taught by Anne Arundel County master gardeners. 7-8 p.m. On April 27, at St. Margaret's Church, 1601 Pleasant Plains Rd., Annapolis; on April 28, at North County Library. 1010 Eastway, Glen Burnie. To register call Anne Arundel County Extension Office, 410-222-6757.
-- May 1: Dahlia Tuber Sale sponsored by National Capital Dahlia Society. 10 a.m.-2 p.m. Brookside.
-- May 1-Sept.19: Wings of Fancy Live Butterfly Exhibit. Hundreds of North American, Costa Rican and Asian butterflies surround you as they fly around this indoor exhibit. The focus is on butterflies in your backyard and the host plants their caterpillars need. Daily, 10 a.m.-4 p.m. $6 adults; $4 children. Brookside.
-- May 1, 2, 15: Azalea sale sponsored by Brookside Gardens Chapter Azalea Society. 1-5 p.m., May 1; 9 a.m.-4 p.m., May 2; 9:30 a.m.-2:30 p.m., May 15. Brookside.
-- May 2: Explore Woods of Chapman's Forest. Four-mile hike through a forest protected since 1750. $35. Call 301-652-9188.
-- May 8: Annual Garden Mart sponsored by the Silver Spring Garden Club. 9 a.m.-3 p.m. Brookside.
-- May 12: Dahlia Tuber Sale. National Capital Dahlia Society offers growing tips and advice. 7 p.m. Bethesda Library, 7400 Arlington Rd., Bethesda.
-- May 14: Luscious Landscaping Using Fruiting Trees, Shrubsand Vines. Join Lee Reich, PhD, to study trees, shrubs and plants that require little maintenance but provide spring flowers, autumn color and winter interest. 10-11:30 a.m. Brookside.
-- May 21: Edible Ornamentals and Ornamental Edibles. Diane Lewis presents a slide-illustrated lecture. 10-11:30 a.m. Brookside.
-- May 29: Baltimore Herb Festival. $5. 10 a.m.-3 p.m. Leakin Park. http://www.baltimoreherbfestival.com.
-- April 24: Alien Plant Invaders. Help remove alien plants from the park by learning to identify invasive species. 10 a.m.-noon. Benjamin Banneker Park, 1500 N. Sycamore St., Arlington.
-- April 24: Garden Market. Local growers offer shrubs, native plants, wildflowers, ornamental grasses, unusual perennials and annuals. 9 a.m.-1 p.m. Green Spring Gardens Park, 4603 Green Spring Rd., Alexandria, 703-642-5173, http://www.greenspring.org.
-- April 24: Parkfairfax Native Plant Sale. One of the largest native-plant sales in the Washington area. 9 a.m.-2 p.m. 3601 Valley Dr., Alexandria, http://www.home.earthlink.net/sknudsen.
-- April 25: Spring Wildflowers of the Potomac Valley Collection. View some of the region's most beautiful spring wild flowers in this internationally recognized conservation collection. 2 p.m. Meadowlark Botanical Gardens, 9750 Meadowlark Gardens Ct., Vienna, 703-255-3631, http://www.nvrpa.org/parks/meadowlark.
-- May 1, 8: Garden Market. Local growers offer shrubs, native plants, wildflowers, ornamental grasses, unusual perennials and annuals. 9 a.m.-1 p.m. Green Spring Gardens.
-- May 1: Third annual statewide Invasive Plant Removal Day. Program will take place at several locations, coordinated by the Virginia Native Plant Society and the Virginia Master Naturalists. http://www.virginiamasternaturalist.org/invasives.
-- May 1: Container Gardens with Impact. Advice on design principles, plant selection, soils, and nutrient and water management. Take home a plant for your own container. 9:30-11:30 a.m. $20. Green Spring Gardens.
-- May 8: Native Plant Sale by Friends of Riverbend Park. 8 a.m.-noon. The Grange, 9818 Georgetown Pike, Great Falls, 703-759-9018.
-- May 8: Amazing Annuals and Pennywise Perennials. Information about plant choices. 1:30-2:30 p.m. $12. Green Spring Gardens.
-- May 15: Spring Garden Day. More than 40 vendors of rare and unusual plants. 9 a.m.-3 p.m. Green Spring Gardens.
Joel M. Lerner is president of Environmental Design in Capitol View Park, Md.