Gallon milk container
Knife or screwdriver
Seed-starting mix or soil-less potting mix
I don't usually have gallon milk containers around the house. Fortunately, my sister has a thirsty 16-month old son, so she saved a couple for me. (I believe he calls milk "daddy" as he does nearly every other object around the house.)
Begin by cutting your gallon milk container in half. I have insanely sharp kitchen knives but you can also use scissors. Leave a little bit of plastic connecting the two halves, to serve as a hinge.
Make a few drainage holes in the bottom. Kevin from A Garden for the House uses a screwdriver heated at a gas stove flame. I used my insanely sharp kitchen knives.
It's been windy in New England for the last couple of weeks, so I tossed in a few pieces of gravel to weigh down the container.
Finally, I duct taped the "greenhouse" shut. When the seedlings sprout, I'll be able to open the top half to allow more sun and air circulation and I can close it again during cold nights.
Here they are, sitting in the snow, nestled inside one of my self-watering containers. Fingers crossed, I hope this works!
Have you tried winter sowing before? How did it go?