Red on the vine tomatoes are marketed and sold stem-on, with four or five tomatoes to each vine. As they are allowed to ripen to a later stage of maturity, they have a higher sugar content, are uniformly bright red, and medium-sized.
Red on the vine tomatoes are available year-round.
The attached to these tomatoes contains nutrients and continues to feed the fruits while they are ripening in cases or on the shelf. Other varieties are picked green and ripened with a poly ethylene gas which reduces the natural sugar content and sometimes results in a more mealy texture.