This is a very thorough article on tomato growing. Thought you would enjoy it on the front page temporarily.
by Mike Schmitt
1. Tomatoes must have at least 6 hours of direct sunlight and preferably 8 per day.
2. Tomatoes will not set blooms unless nighttime temperatures drop to at least 70 degrees. (Don Lambert)
3. You should not put the plants in the ground until your soil temperature is consistently above 60 degrees. That would normally be sometime after the 2nd week in March but could be later. (Marie Tedei)
4. Tomatoes are the only plant I know of that will sprout roots along their stems if you dig a deep hole and cover up the stems. These additional roots will help feed the plant.
5. One method of planting them that works well is to cut most of the leaves and stems off the main trunk and just leave a 4 or 5 leaves at the top. Then plant them in a trench with the top portion sticking up out of the ground. This gives them many more roots to help feed the plant. I typically just plant them in a very deep hole and have not tried the trench method.
6. If you want to try to extend your crop of tomatoes later into the summer, place shade cloth over them starting in early to mid June, depending upon when the hot temperatures really get kickin. (Sic). (TOFGA conference.)
7. In my planting hole, I use diamnotaneceous earth, worm castings, soft rock phosphate, horticultural corn meal, and a little Epson salt. I put this at the bottom of the hole place the plant on top of it and also sprinkle a little on top of the root ball.
8. I then sprinkle horticultural corn meal on the surface of the soil as an anti-fungal agent and water the plant in with water, liquid seaweed, compost tea, apple cider vinegar, & molasses.