[Shandy]

I have brown/grey scabs on my green plums, so not yet ripened.

Can you tell me what it is please and can I still eat the plums?

Was looking forward to making plum jam from my own fruit this year

[mumofstig]

It's often a mark made when heavy rain/hail bruises the skins - just cut all the brown bits off when you harvest 

[plum crumble]

who you calling Scabby? Oh, oh I see, sorry.     

as Mum says, just cut those bits off - no problem