THU-SUN Lilac gardens with 1880s farmhouse open and lilac plant sale, 10 a.m.-4 p.m. today through Sunday, Hulda Klager Lilac Gardens, 115 S. Pekin Road, Woodland; $2; ages 11 and younger free with adult (www.lilacgardens.com).
Des Moines Garden Club
FRI Plant sale of perennials, bedding plants, herbs, tomato plants, grasses, native plants and more, 9 a.m.-6 p.m. Friday, Manhattan Drug Store, 17833 First Ave. S., Normandy Park (206-244-9081).
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Lake Wilderness Arboretum Spring Plant Sale
FRI, SAT Unique assortment of plants, information, specialty plant, art-and-craft vendors, 10 a.m.-6 p.m. Friday, 10 a.m.-4 p.m. Saturday, Lake Wilderness Arboretum, 22520 S.E. 248th St., Maple Valley (425-413-2572).
Friends of the Conservatory plant sale
SAT Bromeliads, orchids, cactus and tropical plants like those featured in the Conservatory, gift shop, 10 a.m.-3 p.m. Saturday, outside Volunteer Park Conservatory, 1400 E. Galer, Seattle (206-322-4112 or www.volunteerparkconservatory.org).
Native plant sale
SAT Washington Native Plant Society benefit sale of plants, compost and gardening books, 10 a.m.-4 p.m. Saturday, Bellevue Botanical Garden, 12001 Main St., Bellevue (425-452-2750).
Woodinville Garden Club plant sale
SAT Annuals, perennials, tomatoes, hanging baskets, 9 a.m.-3 p.m. Saturday, Chateau Ste. Michelle, 14111 N.E. 145th St., Woodinville (www.woodinvillegardenclub.org).
Duvall plant sale
SAT Plant sale offers perennials, annuals, shrubs and small trees at great prices, along with a dozen local artists’ booths; all proceeds from the sale and raffle benefit the Duvall Library and local charitable and nonprofit organizations, 10 a.m.-4 p.m. Saturday, Duvall Library, 15619 N.E. Main St., Duvall (425-788-7965).
Skagit Count plant sale
SAT Plant Fair to support and enhance the WSU Skagit County Extension Master Gardener Program, 8 a.m.-3 p.m. Saturday, WSU Northwestern Washington Research and Extension Center, 16650 State Route 530, Mount Vernon; free (360-428-4270).
Northwest Orchid Society sale
SAT, SUN Orchids and information, 9 a.m.-5 p.m. Saturday and 10 a.m.-4 p.m. Sunday, Center for Urban Horticulture, 3501 N.E. 41st St., Seattle (425-257-0583).
Rhododendron Society Show and Sale
SAT, SUN Display and sale, noon-4 p.m. Saturday, 9 a.m.-4 p.m. Sunday, Rhododendron Species Botanical Garden, 2525 S. 336th St., Federal Way (253-661-9377).
Rhododendron Species Botanical Garden
ONGOING Peak season through May featuring blooming rhododendrons, perennials and flowering trees and shrubs, 11 a.m.-4 p.m. Fridays-Wednesday (closed Thursdays), Weyerhaeuser Corporate Campus, 2525 S. 336th St., Federal Way; $2.50-$3.50, free for moms on Mothers Day (253-838-4646 or www.rhodygarden .org).
Meerkerk Gardens peak bloom season
ONGOING Peak blooming season for garden, with thousands of daffodils, cherry trees, magnolias and rhododendrons, 9 a.m.-4 p.m. daily, Meerkerk Gardens, 3531 Meerkerk Lane, Greenbank, Whidbey Island; $5/adult, ages 15 and younger free with adult (360-678-1912 ).