Our how-to for using milk and water jugs to create your own planters to sow seeds in the snow. Yes, you can start sowing seeds now, even if you're snowed in, and be rewarded with hardy vegetables and flowers in the summer.
Add soil and plant your seeds. Pour the soil to a depth of 3" to 4", then moisten thoroughly and let drain. It is absolutely necessary to use a soil mix that drains well and that has a light, fluffy consistency. Commercial peat and perlite mixtures work well.
To plant, simply sprinkle your seeds on the surface of the soil. Tiny seeds, including creeping thyme (Thymus serphyllum), require no additional soil to cover them. Just leave them on the surface, regardless of what the seed packet says.
Larger seeds, like morning glories and sweet peas, require only a 1/8" planting depth. Gently pat the mix down, to make sure that seeds and soil make good contact. Then replace the lid, and secure it with a strip or two of duct tape, as illustrated at left.