City Strolls, Robert Mills House and Gardens: Historic Columbia Foundation will host a guided tour of the Robert Mills Historic District the second Friday of each month. See some of Columbia’s oldest homes. Tickets: $6 at the Museum Shop, 1616 Blanding St. (803) 252-1770, ext. 24
Seed swap: Swap seeds Saturday at the Marketplace at 701. The 2014 Backyard Farmers of Columbia Seed Swap will begin at 10:30 a.m. It’s free and open to all “backyard farmers,” just bring your packets of labeled seeds and some extra packets to put the swaps in and share the bounty.
The Grinding of the Greens: Christmas trees will be turned into mulch available while it lasts beginning at 8:30 a.m. Jan. 18 at the State Farmers Market and Seven Oaks Park. Please note that this date has changed due to cold weather. You can drop off your tree through Jan. 16 at the following locations – guidelines and times at (803) 733-1139 or www.keepthemidlandsbeautiful.org. Locations are: Caughman Road Park, 2800 Trotter Road; Columbia Compost Facility, 121 Humane Lane; Clemson Institute for Economic & Community Development, 900 Clemson Road; Crooked Creek Park, 1098 Old Lexington Highway, Chapin; Friarsgate Park,1712 Chadford Road, Irmo; Forest Lake Park, 6820 Wedgefield Road; Fort Jackson Recycling Center, Building #5671 on Lee Road, Fort Jackson; Holiday Inn & Suites Columbia Airport, 110 McSwain Drive, West Columbia; Hollow Creek Tree Farm, 228 Windmill Road, Gilbert; Lexington County C&D Landfill, 498 Landfill Lane, Lexington; Lexington County Sandhills Collection Center, 3241 Charleston Hwy., Cayce; Lexington County Southeast Collection Center, 538 Martin Neese Road, Swansea; Polo Road Park, 730 Polo Road; Richland County C&D Landfill, 1070 Caughman Road North; Richland County Adult Activity Center, 7494 Parklane Road; Saxe Gotha Presbyterian Church, 5508 Sunset Blvd., Lexington; Seven Oaks Park, 200 Leisure Lane; State Farmers Market, 3483 Charleston Highway, West Columbia; St. Andrews Park, 920 Beatty Road. The Grinding of the Greens is sponsored by Keep the Midlands Beautiful and Asplundh.
Christmas at Kensington Mansion: 9:30 and 11 a.m., 1 and 2:30 p.m. Thursday-Saturday at 4101 McCords Ferry Road, Eastover. Experience the smells and sounds of a 19th century Christmas via guided tours. Cost is $7; active duty military and age 60 and older, $6; ages 6-12, $5; children younger than 6 are free. (803) 353-0456; www.kensingtonmansion.org
Richland County Master Gardener Presentations: “Native Plants,” 5:30 p.m. Tuesday at the South Congaree-Pine Branch Library, 200 Sunset Drive, West Columbia, (803) 785-3050; “Herbs in Containers,” 10 a.m. Jan. 17 at Cooper Library, 5317 N. Trenholm Road, (803) 787-3462; “Color in the Winter Garden,” 2:30 p.m. Jan. 18, 608 Main St., Eastover, (803) 353-8584.
Soda City Market: 9 a.m.-1 p.m. every Saturday at the 1500 block of Main Street. www.sodacitysc.com