Here’s a simple chart that you can use as a tool to calculate when to start your seeds. It’s been personalized for my own purposes of growing vegetables in Colorado, with our shorter growing season and what I prefer to grow. So… it’s just a suggestion. You’ll need to personalize it by adding your own Last Frost Date and your own preferred vegetables and find out what their particular germination timing is (you can find this on seed packets or the Park Seed (or other company) catalog.