See Burpee’s growing zone calendar for an idea of when to plant – for growing seedlings inside and for directly seeding in the ground. (We are in Zone 5A.)
There’s a fun garden planning tool at http://www.gardeners.com/how-to/kitchen-garden-planner/kgp_home.html note the planting info for each veggie.
Canillas raised beds are 12′ x 4′
“The Climate-Friendly Gardener” A garden can be thought of as climate-friendly
if it stores (or prevents the release of) more heat-trapping gases than it generates. Read more about composting, cover crops, carbon sequestration, crop rotation, and other climate-friendly practices for your garden in this report from The Union for Concerned Scientists.