I am thinking of doing winter sowing for the first time, and have some coneflower, black-eyed susan, and marigold seeds I collected last summer. I also have some empty OJ/milk cartons that I was going to put inside plastic bags with slits.
However, I also have a long railing box and a couple small containers that still have some soil in them. The weather is a little warmer in Chicago and they might unfreeze a bit. I was wondering - can I just plant some seeds into there, or is it critical to have the containers be covered with plastic? I also sowed some seeds directly into our garden, and hope at least a few will come up there anyway. Thanks!
using empty railing boxes?
Scuba, if you mean flower boxes like you hang on the porch railings, I've planted mine and plopped them in a cheap tub with a plastic lid as an experiment.
In nature they wouldn't have a plastic cover, give it a try without.
Or you could cover with some plastic sheeting, propped up off the soil with stakes or sturdy wire or something of the sort.