Joseph Lofthouse wrote:
If one's definition of heirloom, is a variety that has been around more than 50 years, then it is a variety that is trapped in the past: It was ideal for a particular farm in a particular age. Current growing conditions are much different. Years ago, I was growing varieties with a somewhat greater than average ability to naturally cross pollinate. That allowed my tomatoes to slowly move towards local adaptability. Another option in addition to heirloom and hybrid would be modern open pollinated varieties.
Perhaps I should add some heirlooms varieties back into the mix.