Book signing, 2 p.m., Tsunami Books, 2585 Willamette St., Eugene. Architect Charles Durrett will sign copies of �The Senior Cohousing Handbook,� which addresses housing built around a common area as a social and support network for residents. Free.
Meeting of the Lane County Dahlia Society, 7:30 p.m., Celeste Campbell Senior Center, 155 High St., Eugene. Will feature a forum with experts ready to answer dahlia-related questions. Free admission; guests welcome. Call 344-0970 or 461-8004.
Meeting of the Eugene Bonsai Society, 7 p.m., Eugene Garden Club building, 1645 High St. The evening�s program will be �Selecting Good Bonsai Material.� Free. Call 686-6153 or visit www.eugenebonsai.org.
Garden Conservancy Open Days Program, 10 a.m. to 5 p.m.; four gardens open for touring in Eugene, Springfield and Dexter. Fee: $5 for each garden. See the story on Page 7 for details.
�Grateful Deadheading� workshop, 1 p.m., Johnson Brothers Greenhouses, 91444 Coburg Road. How to prune rhododendrons and azaleas. Free. Call 484-1649 or visit www.northwestgardenplants.com.
Winter vegetable gardening class, 7 p.m. to 8:30 p.m., River Road Annex, 1055 River Road, Eugene. Lane County Master Gardener-led class will feature John Fischer�s pointers for planning a winter vegetable garden. Cost: $10 for residents of the River Road Park & Recreation District; $15 for non-residents. Call 688-4052 to register.
Conifer Day and Plant Sale, 10 a.m. to 4 p.m., The Oregon Garden, 879 West Main St., Silverton. Sale featuring conifers, flowering shrubs and perennials will benefit expansion of the Conifer Garden. Free admission to the sale. Call (503) 874-8100 or visit www.oregongarden.org.
Remodeling seminars, 10 a.m. and 11:15 a.m., Neil Kelly Design/Build Remodeling showroom, 2817 Oak St. in the Southtowne Shoppes, Eugene. At 10 a.m., Matt White will present �Remodeling 101.� At 11:15 a.m., Carrie Strub will present �Kitchen and Bath Remodeling.� Free admission. Call 683-6085 or visit www.neilkelly.com.
Blooms & Butterflies Celebration, 10 a.m. to 5 p.m., Elkton Community Center, 15850 Hwy. 38 West. Tours of native plant gardens and butterfly pavilion; sales of plants, heritage apple trees, garden art and gifts; demonstrations and more. Call 584-2692 or visit www.elktonbutterflies.com.
Community Pesticide Round-Up, noon to 3 p.m., Household Hazardous Waste Collection Center, 3100 E. 17th Ave., Glenwood. Local residents can drop off pesticides, herbicides and other unwanted hazardous products for proper disposal at this free event. Call 682-3111 or 465-8860.
Music in the Garden tour, 10 a.m. to 4 p.m.; seven gardens open for touring in Eugene. Tickets: $12 in advance or $15 on the 14th. See the story on Page 12 for details.
Hendricks Park bird tour, 7 a.m. to 9 a.m.; meet at F.M. Wilkins Picnic Shelter, 2200 Summit Ave., Eugene. Bird expert Dan Gleason will lead a walk through the park discussing birds encountered on the way. Donation of $3 to Friends of Hendricks Park is suggested. Call 607-4066 or 682-5324.
Adaptive gardening seminar, 7 p.m. to 9 p.m., Oregon State University Extension Service � Lane County auditorium, 950 W. 13th Ave., Eugene. Free. Call 682-7308 or e-mail linda.renslow@oregonstate.edu.
Woodworkers Garage Sale, 9 a.m. to 2 p.m., Willamalane Adult Activity Center, 215 West C St., Springfield. Sale of furniture, tools and more benefits the center�s wood shop. Free admission. Call 736-4444.
�Tending Japanese Maples� workshop, 10 a.m., Johnson Brothers Greenhouses, 91444 Coburg Road. How to prune and tend new and established trees. Free. Call 484-1649 or visit www.northwestgardenplants.com.
Send calendar items for the June 25 issue to Home & Garden Monthly, The Register-Guard, P.O. Box 10188, Eugene, OR 97440; fax to 687-6677 or e-mail sp.feedback@registerguard.com. Deadline is 5:30 p.m. on June 15.