Published on Organic Gardening (http://www.organicgardening.com)
Vegetable seeds typically germinate best in warm soil. Whether starting seeds indoors or out, the soil temperature plays a critical role in successful seed starting. Here are the preferred temps for some common vegetables.
Links:
[1] http://www.organicgardening.com/seed-starting-seeds
[2] http://www.organicgardening.com/javascript:void(0)/*323*
[3] http://www.organicgardening.com/learn-and-grow/14-tips-starting-your-own-seeds