"Participants who help clear the mountainsides of myrtle spurge will receive a voucher for five free native plants," she added, along with chances to win ski passes, gardening materials and headlamps.
Sage Fitch, a county noxious-weed specialist, suggested volunteers wear protective eyewear and clothing, including gloves and long sleeves, because myrtle spurge releases a sap harmful to the skin and eyes when it is pulled.
Saturday's activities are co-sponsored by the county's open-space and noxious-weed divisions, Dimple Dell Advisory Board and the Salt Lake Conservation District.
More information about myrtle spurge, a Eurasian native transplanted to North America as a rock garden ornament, is available at www.purgeyourspurge.org.
There are three opportunities Saturday to join the fight against spurge and other noxious weeds:
Community weed pull, 7:30-9:30 a.m., the Parleys access trail to Grandeur Peak, 2900 S. Wasatch Blvd.
Community weed pull, 8-10 a.m., Dimple Dell Park Wrangle Trailhead, 10364 S. 1300 East, Sandy.
Spurge and water-wise plant exchange/sale, 9 a.m.-2 p.m., REI, 3285 E. 3300 South.