The Talaxian tomato was a plant native to Talaxian space. Like the similar tomato of Earth, the Talaxian tomato was grown as a food.
When Captain Kathryn Janeway and Commander Chakotay were stranded on an M-class planet they dubbed New Earth in 2372, Talaxian tomatoes were one of the plants Janeway grew in a little garden.
According to Captain Janeway, it would only take a few months until she and Chakotay could enjoy vine-ripened Talaxian tomatoes. (VOY: "Resolutions")