Planting in the Winter
Once the ground is frozen solid though, outdoors is not an option. If you have a wee bit of light though (or can hang some lighting from a shelf), you can absolutely get a little planting in these long days of winter. Here are two of my "tide me over" planting strategies.
CuttingsIf you brought in a few plants from the porch at the end of summer, they are probably starting to look a little scraggly. This is the time of year that I trim up those plants, making sure to get 6-8" pieces to use as cuttings. Sweet potato vine, in particular, does very well with a fresh start. The roots will grow in the water and make for a pretty addition to the kitchen sink for weeks and weeks. They can be discarded, sometimes planted into a pot again or planted out in spring. Your choice.
I've also gotten the chance to test a new watering system for cuttings and thus far, it has worked out well for coleus and sweet potato vine cuttings. ( Southern Patio Self-Watering Pot Insert - see below) The cuttings are not actively putting on a lot of new growth, but they are holding steady, which is more than I can say for the declining sweet potato vines in my other pots at the moments (those have turned mainly into cuttings now!)