Growing heirloom vegetables is tremendously popular with many home gardeners, as those varieties are considered more flavorful than today’s hybrids. But there’s a lot more to think about than just a tastier tomato for your burger. Food crops native to the Americas have, and are continuing to undergo significant changes, as a result of hybridization, genetic modification, loss of habitat and climate change. Preserving plant biodiversity by recognizing the value of those “forgotten” crops is important to our future.