At Rawganique, our customers love us as much for what we leave out of our sweatshop-free organic products (the nasties such as PVC, BPA, dioxin, formaldehyde, bleach, chemical dyes, sweatshop-free labor, etc) as for the good stuff we put into our products (100% natural fibers from GMO-free organic agriculture).
We specialize in growing greens year-round for our garden because apart from fruits, raw organic greens form the bulk of our diet. We have found that saving seeds is simple and free. You can have a great variety of greens in perpetuity by simply doing what plants do anyway: after you're done eating from the plants, just let select plants go to seed. Many of the common vegetables, like lettuce and kale, bear prodigious amounts of seed so for most families saving a plant or two per variety is more than enough.
If you live close to a public access beach, you may have access to one of the best fertilizers for your garden. Seaweed is a wonderful fertilizer and soil conditioner containing many minerals and trace elements that may help round out the nutrient profile of your soil and plants grown in it.