Plums in Zone 4 midwest: Creating Diverse set of Black Knot Resistant Plums

[ShiverMinneapolisZ4b]

For readers, here’s cross-reference to a 2019 thread, but that one was not limited to zone 4:

Plums and Pluots without black knot

I tend to mention problems with my fruit trees and I think doing so is important but I thought it might be a helpful to start a topic which emphasize the ones without black knot or very low occurrences. Even though I’m pushing no/low black Knot all comments are welcome. In my opinion I think mentioning how long you have had the variety is important. As of now these are the ones without black knot Odom 3-4 year Guthrie 3-4 years AU Cherry Plum 1-2 years AU Rosa less than 1 year Spring Satin…