You really should have started your sprouts by now (I have mine in an indoor greenhouse thingy). As soon as the snow stops falling (we got some yesterday) I'll plant everything outdoors.
Cool-season and warm-season vegetables can be grown in Ohio. Cool-season crops withstand light frost and include many leaf and root vegetables. Warm-season crops, such as cucumbers, squash, melons and tomatoes must be planted after the threat of frost passes.
Experienced Ohio gardeners begin planting cool-season vegetables in Mid-March, according to the Ohio State University Extension web site. Ohio is located in USDAplanthardiness zones 5 and 6, with an average last frost date occurring in April-May. Warm-season vegetables can be planted after the last killing frost.
Starting vegetable seeds indoors during late winter can result in transplants by the early spring planting season. Using transplants instead of direct seeding can add a few weeks to your harvest season. Successive planting can also make the most of a season. Plant new crops as soon as the previous ones are harvested.