Poinsettia Trade-In: Bring your holiday Poinsettia to Wingard’s Nursery and Garden Center, 1403 North Lake Drive, Lexington, and receive a free Primrose, through Jan. 26. The Poinsettia does not have to have been purchased at Wingard’s. Any Poinsettia is acceptable, regardless of appearance. Limit one per family while supplies last. (803) 359-9091

Exhibitions and Tours

Orchids on the Riverbank: See hundreds of blooming orchids and get information about orchids from experts, 1-5 p.m. Feb. 8, 9 a.m.-5 p.m. Feb. 9 and 10, Riverbanks Botanical Garden, 500 Wildlife Parkway. Presented by The S.C. Orchid Society, Ikebana International Chapter 182 and Riverbanks Botanical Garden. Entry is free with paid regular admission to Riverbanks Zoo. (803) 799-8717 or riverbanks.org

Dollar Sundays, Robert Mills House and Gardens: Take a tour of historic house museums 1-5 p.m. Sunday. Purchase tickets at the Museum Shop, 1616 Blanding St. (803) 252-1770, ext. 24, or email aposner@historiccolumbia.org.

W. Gordon Belser Arboretum: Monthly open house will be held 1-4 p.m. Sunday, 4080 Bloomwood Road. (803) 777-3934

Garden Tours, Robert Mills House and Gardens: This tour is today. Compare the visual aesthetics of late 18th- and 19th-century landscape gardening to an earlier-style English boxwood garden. Tickets $6. (803) 252-1770, ext. 24, or aposner@historiccolumbia.org

Send events and calendar items to homeandgarden@thestate.com.