A "landrace" is not a standardized variety, but rather a diverse population with similar characteristics. The term is generally used to describe localized populations developed through traditional farming, which means on-farm selection by farmers in a given region. Most seed companies don't sell landrace varieties because customers want to know what they're going to get. We love planting landraces precisely because we don't know what we're going to get. Many old landraces are under threat of extinction or have already disappeared. The loss of landraces is a huge threat to the food supply. Not only do landraces provide critical genetic diversity for future crop improvement, but their diversity makes them incredibly resilient in the face of the extreme weather and explosion of pests brought about by climate change.