Plastic baggies provide an inexpensive way to start seeds indoors. Although baggies are not sturdy like pots, as long as you keep them away from curious pets, seeds planted in these should do just as well as if you planted them in traditional containers. You can plant the seeds using soil or simply a paper towel; the latter method provides a fun experiment for kids, as they can see the actual root development.
The Soil Method
Prepare your seeds in advance, if necessary. Some seeds require that you nick the outer shell, for example; your seed package will usually indicate if this, or anything else, needs to be done.
Place plastic baggies on a sturdy tray. Pour potting soil to a depth of 2 to 3 inches in each baggie. Moisten the potting soil with water.
Poke the seeds into the soil, covering them only lightly. Leave the baggies open and place the tray in a warm, sunny area of your home.
Keep the soil moist. When you plant seeds in baggies, the plastic acts as a sort of mini greenhouse, and moisture won’t escape easily.
The Paper Towel Method
A thick paper towel in half. Lay it on a firm surface and rub your thumb over the fold to form a good crease. Unfold it and poke small holes about 2 inches apart in the crease, using a sharpened pencil tip.
Place a seed on each hole and close the paper towel. Fasten the sides of the towel closed with tape or staples.
Place the paper towel, seeds and all, into a plastic baggie. Gently add water from a faucet or watering can to dampen the paper towel. Hang the baggie near a sunny window. Check often, at least daily, to make sure the seeds are kept moist. Transplant the seedlings into potting soil when roots develop.