I’ve been using the milk jug method of winter sowing for three years now with very good yield. The image is self-explanatory, I hope, but there are two things the image doesn’t show:

1. There are slits cut in the bottom of the jug for drainage, just like a flower pot.

2. There’s a cup of earth in the bottom part of the jug with seeds in it, also some water. Adding water ensures that the seeds undergo the freeze/thaw cycle, cracking their hulls.

I clip the seed packet to the jug so it travels with the plant. When I transplant the seedlings from the jug to their bed, I’ll stake the packet there too.

I do four at a time so I can take them two-per-hand out to the garden in one trip. Takes fifteen minutes tops.

See here for more on how and why the technique works.