This helpful chart is from Uncle Jim's Worm Farm, but your vegetable-planting schedule will vary depending on where in the country you live. The USDA has a handy Hardiness Zone Map, and you can find a more detailed planting schedule here.
How to build the perfect raised bed: Rake the existing soil at the bottom of the bed to level it, then tamp it smooth. Line the bed with hardware cloth to keep out gophers and moles; trim the cloth with shears to fit around corner posts.
DIY Compact Vegetable Garden Are you a little tight for space? Have you considered square foot gardening? With this project you can address both of these issues. For the original post and direction… YOUR GARDEN ART PROJECT IS WAITING FOR YOU.