10 Fascinating Edible-Plant Facts Gardeners Need to Learn

From a definition of open-pollinated crops and details about grafting tomatoes to knowing which edible garden plants are warm- or cool-weather crops, these facts about plants double as gardening tips to help you grow even more, even better.

Heirloom Tomatoes
Large heirloom tomatoes with a lot of sections, called “ovaries,” are less tolerant of temperatures outside of a specific range than simple, round varieties usually are.
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