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.

Tomato Growing Temperatures
When temperatures are colder or hotter than tomatoes’ preferred range — between 65 and 90 degrees Fahrenheit during the day, and between 60 and 70 degrees overnight — the plants’ pollen loses vigor. In extremely hot weather, the blossoms will drop, which causes a halt in fruit production.
Photo by Rosalind Creasy