Depends on what you are planting....Most of your brassica and turnip type plots need to be planted now to soon to give them time to grow prior to 1st frost. You still have some time for the oat/wheat type plots. I'm not planting my cold forage type oats and clover plot for a couple more weeks. Most of the seeds on the market from the comm. places(biologic, evolved, etc) will have planting guidelines. I get most of my seed from the local coop.