Problems with plums?
We've recently moved house and in the garden are 3 massive plums trees, they belonged to an orchard of the neighbours house which was built in 1850 so I guess they are 150yrs+ old.
This is our first summer with them and I've noticed all 3 trees have this problem - see link to photo below.
None of the fruit looks particularly appetising! Can anyone advise what I should do now and for next year to ensure I get a good healthy crop?
Any help is appreciated.
Here is a link that might be useful: