We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
In New England, with our relatively brief growing season, it is difficult to have a crop of tropical and subtropical fruits like tomatoes for more than several weeks - mainly August-mid-September. Unless you are on the coast, it is hardly worth bothering to grow tomatoes (other than cherry tomatoes which ripen quickly) from mid- Massachusetts, north.
Some people, with more drive than I have, construct polyurethane tents, like greenhouses, to give their tomatoes a head start on the season. It is of minimal effectiveness. Why?
That's why putting them in early doesn't make sense unless it's your only chance to get them in at all. Experienced gardeners around here aim for putting them in around Memorial Day and their crops are generally more productive than those who try to jump the season.
The domestic tomato was bred, probably by Aztecs in Central America, into a useful food (as they did with the tomatillo). A brief History of Tomatoes. The wild version of tomato seems to be the Currant Tomato, a perennial vine with berry-like green fruit. By now, that plant has so widely cross-bred with man-made tomato that the wild type may be extinct. All of the modern colors, including bright red, are relatively recent genetic inventions. Every tomato today (including "heritage") is a testament to GMO - the slow kind achieved by the Aztecs up through the 20th century.
Here in New Orleans when the temp. at night gets above 75 -80 the flowers will not set fruit any longer .The vines will grow like crazy, lots of flowers, but no more fruit , So I put my plants out in Feb. before March to get a crop.
They also won't pollinate after the regular low temp. stays above 70 F. This shortens the growing season in OK. Putting them in early here is March and that usually means they get too much rain. By July it's usually just too damn hot for them to pollinate.
Mine are flowering a lot right now. I said I wasn't going to grow any, but I did.
This year I have given up and put out one plant in a pot on the patio. Some how the deer and the squirrels can always tell when the one tomato is ready to be picked and eat it the night before. Now I'm not the murdering kind, but sometimes...........Nothing like homegrown heirloom tomatoes.