Tomato categorisation can be confusing because there are multiple names for the same thing. Cordon tomatoes are the ones that grow on a vine – they’re also called vine or indeterminate tomatoes. Bush tomatoes are as the name suggests, free-standing plants; they’re also called determinate tomatoes. Also readily available, grafted tomatoes are varieties grafted to the most vigorous rootstocks, promoting strong growth, disease resistance, and bumper harvests.