Posted: Today at 00:32
I'm no expert having only picked fruit from a cherry plum for the first time this year but found the fruit continues to ripen very quickly after picking.
I made two pickings the first was for ripe fruit and fruit which was partly ripe but still half green. I left the green fruit on the tree but this was ready for picking only 7 to 10 days later.
Ripe fruit will rot very quickly and if rotting fruit is touching other fruits it will cause them to rot too. Storing them even just for a week in those cardboard egg trays will seperate the fruit, allow them to ripen further, any rotting fruit can be removed and because they aren't touching a rotting fruit does not effect the rest of your plums.
My experience has been once picked you need to decide quickly what you are going to do with the crop by way of preserving it, I made plum and apple jam but you can also make jelly's and preserve plums in a syrup. I'm sure someone else will be long to say what you can do with plums...
Hope this is helpful