Click on the above chart to view a larger version.

If you are getting seeds going, there’s no better tool for keeping young plants warm and cozy during late winter than a seedling heat mat. I use one under each tray of Rapid Rooters that I start, and I don’t think my baby plants would live without one. I did some research and found this great table illustrating the preferred temperature for optimum germination of different crops. I found the chart on Tom Clothier’s Garden Walk and Talk. It’s a website with a massive database of gardening knowledge that’s really quality data.