"Every gardener knows that under the cloak of winter lies a miracle … a seed waiting to sprout, a bulb opening to the light, a bud straining to unfurl. And the anticipation nurtures our dream.” – Barbara Winkler
December 21 is the shortest day of the year (in the northern hemisphere) and the official start to winter! Known as the Winter Solstice it is also the start of “WINTER SOWING” (creator and Guru Trudi Davidoff). This is a nifty method of outdoor seed germination using milk cartoons, 2 liter soda bottles, plastic kitty litter jugs or other similar types of containers. These mini-greenhouses are placed outdoors in a safe and sunny locations, protected from heavy winds but can still get water from rain or snow. Winter Sowing works with perennials, annuals, herbs and even garden veggies.
Winter sowing is not difficult but does have a few guidelines. For starters, the containers need to be “transparent”, deep enough to hold 3"-4” of potting soil along with adequate “head space” There also needs to be drainage holes on the bottom (so we don’t drown our seeds) as well as ventilation holes on the top (or remove the cap). Hardier seeds are started in January and the more tender seeds in February and March.
As the days start to warm but the nights are still cold seedlings will began to emerge. As the seedlings grow keep an eye on moisture levels and water as needed. Open up the containers on nicer days but close them up at night if cold or a chance of frost. Winter-sown seedlings are naturally “harden off” allowing direct transplanting into the garden come the Vernal (Spring) equinox!