Meirloom tomatoes are varieties that have been available for 50 years or more, are open pollinated and grow "true to type" from seed saved from fruit each year. They usually have an indeterminate growth habit which means they require trel-lising and constant pruning. Most heirloom varieties have little disease resistance. The fruit are usually thin-skinned, soft and tend to crack. But, consumers are attracted to heirloom tomatoes because the most popular ones are very flavorful, colorful, come in many unusual sizes and shapes and have interesting names. For growers, however, heirloom tomatoes are challenging to produce and difficult to ship, but they can bring high prices on the local market.
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