I've been starting a few seeds all winter in the slightly heated and lighted shed I/we use to contain my hobby but we do not have a greenhouse.
In a cold frame or in winter sowing containers such as gallon milk jugs start these seeds, leave them outside and cold until mid-Feb. Then, bring them inside to plant and grow for the spring.
|Fringed Gentian seeds - Prairie Moon Nursery|
Gentian cinita, Greater Fringed Gentian Gentian andrewsi, Bottle Gentian
Poppy and Larkspur seeds germinate at 50 degrees so they can be planted directly into the beds now.
Most trees, including KY Coffee Tree, Lily of Valley Tree
Magnolia Virginiana, Sweet Bay, & Sycamore are started
|Dame's Rocket, Swallowtail Garden seeds|
Wintersown is the go-to site for tips on sowing seeds during the winter months. Don't waste any time getting started. You'll enjoy the process and most of the time the results will impress.