Request Free Seeds from WinterSown.org
Forget fancy light table set-ups. Visit WinterSown.org to learn how to start your seeds outdoors in the winter, and they'll send you six free packets of seeds that are appropriate for winter sowing in your area.
To Get Your Seeds: Send a SASE to the address provided on the site.
Swap Seeds Online
Have too many of some seeds and not enough of others? Consider swapping for what you need online. Here are several forums to try:
Sign Up for Gardening Catalogs
Many of the garden catalog companies offer $25 off of your first order of $25 or more. Snag a couple of these promotional offers, and you should be able to order enough free seeds to plant your entire garden:
Find Local Seed Exchanges
Many garden clubs hold annual seed exchanges. Check with your local garden club to see if they have one coming up.
Host a Seed Swap Party
Invite some of your gardening buddies to a seed swap party at your house. It's a fun way to spend an afternoon, and a great way to expand your garden on the cheap.