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

[Cgardener]

I think that Toka, Waneta, and Superior are good choices. Like jrd51 mentioned Alderman is another good choice. Kenmore / NY #9, President, and Bluebyrd are likely better choices than Early Italian for European plums. Some people have noted black knot issues with Methley so might be better to avoid that one (depends on region but multiple people have had problems).

Need opinion on best cold hardy, disease resistant plum

HI Steve. Im in the Lake George area of upstate NY. We used to be zone 4 but now 5 . It gets very cold in this area. I have about a dozen plum trees and have been getting devastated by Black knot . Methley, Bruce, Burbank, Santa Rosa, Black Ice, Hanska, Shiro, and especially Stanley Prune have been overwhelmed and all but two of those are still standing. So far, there is nothing on my Alderman( whiich has large red plumbs in August that taste great) and no sign of any on my Superior that i…

Insect and Disease Identification Thread

Definitely black knot Methley is particularly susceptible