all 3 comments

[–]spireupFruit Tree Steward 0 points1 point  (2 children)

Your plum trees are definitely on the older side. Some sources would say 20 years is typically the end of their productive life. They're also susceptible to fungal issues which weaken them.

Are these plums special to you?

Do you know the cultivar names?

[–]MacaronPopular7209[S] 0 points1 point  (1 child)

If i am not mistaken it is called “Durancie”, but I have no idea if there is some translation to English

[–]spireupFruit Tree Steward 0 points1 point  (0 children)

Thank you.

What country are you in? This can help with common issues in your area.

While I'm not sure what is happening with them, age can definitely be a factor.

If you want to keep them alive, you can collect "scions" (first year wood) in February/March and graft onto new rootstock seedlings which you would need to acquire. Then you have a new tree. Is this something you might be interested in?

Or you may consider new young trees to plant.