A weekly listing of garden events, classes and sales.

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Dates and times are subject to change. Call ahead to confirm.

Nov. 3-5

Northwest Orchid Society

fall show and sale

SAT-SUN The largest orchid show and sale in the Northwest, presented by the Northwest Orchid Society, 9 a.m.-6 p.m. Saturday and 10 a.m.-4 p.m. Sunday, Seattle Center Olympic Room, 305 Harrison St., Seattle; $3 suggested donation (206-781-5805).

Holiday open house

SAT See the newest Christmas ornaments and decorations, music, refreshments and ideas for holiday crafts, 3-7 p.m., Sky Nursery, 18528 Aurora Ave. N., Shoreline (206-546-4851).

Soaring Dragon celebration and auction

SUN Benefit for the Seattle Chinese Garden includes a champagne dinner and live auction of travel, art and culture-related objects, 4-8 p.m., Bell Harbor International Conference Center, Pier 66, Seattle; $150 (206-282-8040).

Classes

Container design for the winter

SAT Winter container-design demonstrations and discussions, 11 a.m., Swansons Nursery, 9701 15th Ave. N.W., Seattle; free (206-782-2543, ext. 238, or www.swansonsnursery.com).

The off-season garden

SAT Learn gardening tips for year-round interest, 11 a.m., Emery’s Garden, 2829 164th St. S.W., Lynnwood; free (425-743-4555 or www.emerysgarden.com).

Taking care of holiday plants

SUN Learn how to keep poinsettias and other holiday plants in great shape, 11 a.m., Swansons Nursery, 9701 15th Ave. N.W., Seattle; free (206-782-2543, ext. 238, or www.swansonsnursery.com).

Tours

Arboretum

ONGOING Guided walks of the Washington Park Arboretum, 1 p.m. first and third Sundays, Washington Park Arboretum, 2300 Arboretum Drive E., Seattle; free (206-543-8800 or www.wparboretum.org ).

Garden calendar items can be faxed, 206-464-2239; mailed to Garden Calendar, Seattle Times, P.O. Box 70, Seattle, WA 98111; or e-mailed to gardencalendar@seattletimes.com.

The deadline is three weeks before publication.