I grow several varieties of tomatoes every year. This year I have 2 Italian sweets (small roma looking, great flavor), 2 Glaciers, 1 sungold, 1 roma, 1 sweet million, 1 early girl, 1 bush early girl, and 1 stupice. I get lots of sun at my place and water all plants by hand. They are doing exceptionally well this year thanks to the great weather.

DV's tips are spot on, plus to quicken the end of season ripening...don't water at all.
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Bless our troops.