May 17 – 8 weeks/56 days = March 20
Rather than repeat this calculation for all my vegetable and flower seeds, I developed a spreadsheet which makes the calculation depending on the date you want the transplant available. It can be found on the Howard County Master Gardener website, under the Grow It! Eat It! link, The link to download the spreadsheet is on the right hand side of the page under quick and useful links.