The Germination Station: How to Get a Jump-start on Spring

It may be surprising, but I often start seeds for my garden in late December. No, I don't live in South America, I'm in Houston. In the steam bath we call zone 9A, the guidelines I learned as a kid - plant on Mother's Day, harvest in July - don't work. That's because tomatoes don't set fruit if the temperature stays in the 90s all night: chiles, maybe; tomatoes, no. That lets us plant a fall garden, setting out seedlings in August and harvesting while our friends in the Midwest are raking leaves. That is, if the squirrels don't get to everything first...
The first time I tried this was in Illinois, except that then I started seeds in February in the depths of Midwestern winter. The references told me I needed to heat the soil to start seeds that early, so I picked up a
Hydrofarm Germination Station.