The tomato is now grown worldwide for its edible fruits, with thousands of cultivars having been selected with varying fruit types, and for optimum growth in differing growing conditions. Cultivated tomatoes vary in size from tomberries, about 5mm in diameter, through cherry tomatoes, about the same 1–2 centimetres (0.4–0.8 in) size as the wild tomato, up to beefsteak tomatoes 10 centimetres (4 in) or more in diameter. The most widely grown commercial tomatoes tend to be in the 5–6 centimetres (2.0–2.4 in) diameter range.
Most cultivars produce red fruit; but a number of cultivars with yellow, orange, pink, purple, green, black, or white fruit are also available. Multicolored and striped fruit can also be quite striking. Tomatoes grown for canning and sauces are often elongated, 7–9 centimetres (3–4 in) long and 4–5 centimetres (1.6–2.0 in) diameter; they are known as plum tomatoes, and have a lower water content.
Tomatoes are one of the most common garden fruits in the United States and, along with zucchini, have a reputation for outproducing the needs of the grower.