Ripening and color development in tomatoes is governed primarily by two factors: temperature and the presence of a naturally occurring hormone called “ethylene.” The optimum temperature range for ...

The USDA has approved a new piece of produce, a purple tomato. Don't be fooled by the color, this tomato is just like its red or green counterparts, but packs a little more punch.

The new Oregon State University-developed tomato Midnight Roma follows in the steps of 10-year-old Indigo Rose, the first antioxidant-rich purple tomato available on the market.