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Determinate vs. Indeterminate? You may have seen these terms and wondered what they mean. On our product listing descriptions you’ll see the tomatoes referred to with either of these terms. The simple answer is Indeterminate tomatoes run through the whole season, producing fruit longer, whereas, determinate varieties set fruit in a short time frame. They reach maturity, and the plants stop growing, and set fruit in a nice short spurt of time, making them perfect varieties for canning, so you get a bunch of tomatoes all at the same time, and can get them canned up into your favorite recipes.

Indeterminate heirloom tomatoes plants grow much bigger, with long vines, and determinate varieties are more of a bush, stopping growth sooner.

All tomato plants are vines but indeterminate tomatoes grow much longer than determinate varieties. If left to their natural tendencies, tomato vines can become a damp, tangled mess on the soil, where they attract diseases and pests. For this reason, it really benefits your heirloom tomatoes using stakes, cages, or trellises to support the plants as they grow bigger.