If this is the year you decide to “grow your own food” by starting vegetable plants from seed, click this link for a great sowing calculator. Start your seeds at the right time, not too early, not too late, with this calculator that takes into consideration last and first frost dates for your area. (West Michigan folks in the Grand Rapids area, plan on May 10 to 20 for last frost and October 10 for first frost as a rough calculation) 
The calculator will help you answer the question sow what and when?
and will leave you some time to harden off your seedlings before setting them out in the garden.
