CALIFORNIA
March 12-16: San Francisco Flower & Garden Show, Daly City. See orchids, kid-designed container gardens, and much more. $20. Cow Palace, 206-789-5333, http://www.gardenshow.com. DELAWARE
April 17-19: Trillium Symposium, Wilmington. Two days of trillium—the biology, ecology, and conservation of these woodland flowers—with an optional field trip on the third day. $195 before 1/31/08. Mt. Cuba Center, 302-239-4244 x 212, www.trilliumsymposium2008.org. IDAHO
April 26: Spring Plant Sale, Boise. Annuals, perennials, vegetables, herbs, shrubs, trees, and native and drought-tolerant plants for sale. Refreshments. $1 donation. Idaho Botanical Garden, 877-527-8233, www.idahobotanicalgarden.org. ILLINOIS
March 8-16: Chicagoland Flower and Garden Show, Rosemont. Theme gardens, seminars, culinary demonstrations, and workshops, as well as a juried art show. $12 weekday, $14 weekend. Donald E. Stephens Convention Center, 773-435-1250, chicagolandflowerandgarden.com. MASSACHUSETTS
April 26: Earth Day Festival, Framingham. Springtime festivities hosted by the New England Wild Flower Society. Free. Garden in the Woods, 508-877-7630, www.newenglandwild.org. MICHIGAN
February 28-March 2: West Michigan Home & Garden Show, Grand Rapids. Flower show, display gardens, free seminars, a marketplace, and more. $9. DeVos Place, 800-328-6550, www.showspan.com. PENNSYLVANIA
March 2-9: “Jazz It Up!”: Philadelphia Flower Show, Philadelphia. Flowers meet jazz at the oldest flower show in the U.S. $22 in advance. Pennsylvania Convention Center, 215-988-8800, http://www.theflowershow.com. TEXAS
March 15-31: Nacogdoches Azalea Trail, Nacogdoches. More than 20 miles of self-guided tours, plus a plant sale, garden party, and symposium. Free. Driving tours start at Visitors’ Center, 200 E. Main St., 888-OLDEST-TOWN, www.visitnacogdoches.org. WISCONSIN
April 18-May 8: Leaf Mulch Sale, Madison. Shredded, composted leaves sold in bags or in bulk. $6 per bag. Olbrich Botanical Gardens, 608-246-4550, www.olbrich.org. CANADA
March 26: An Ecological Vegetable Garden, Guelph, Ontario. Tips for making your garden more productive and easier to handle, from composting to post-harvest cleanup. Register by March 12. $50. The Arboretum at the University of Guelph, 519-824-4120 x 52113, www.uoguelph.ca/arboretum. CANADA
April 27: 30th Annual VanDusen Plant Sale, Vancouver, BC. More than 40,000 plants for sale. Free. VanDusen Botanical Garden, 604-878-9274, www.vandusengarden.org.
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