(pasted from the webz) Standard-sized tomatoes take 20 to 30 days from blossom set to reach full size–commonly called “mature green”; they take another 20 to 3

(pasted from the webz) Standard-sized tomatoes take 20 to 30 days from blossom set to reach full size–commonly called “mature green”; they take another 20 to 30 days to ripen, that is begin to change color.