 These are plums from just one tree of 40 fruit in one week in August. Several years into the project, I was told that I had one of the largest collection of these fruit in the eastern United States, which, as an artist, is absolutely terrifying. But in many ways, I didn't know what I had. I discovered that the majority of the varieties I had were heirloom varieties. Several of the varieties dated back thousands and thousands of years.