Most and least black knot tolerant prunus species?

[ZombieFruit]

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…