By Johnscott
Dumfriesshire,
United Kingdom 
Last year my Victoria plum produced masses of fruit, but those which the wasps didn't get to first were hard with little or no flavour. This year there was not much blossom, and what little there was does not seem to have set.
Does anyone have any ideas as to what I may be doing wrong?
29 May, 2017
Answers
Might not be doing anything wrong. Victoria plum can be a biennial cropper when there has been a substantial crop the previous year. Wouldn't hurt to give it a high potassium feed in late summer.
29 May, 2017
Plums seem to be biennial as Jimmy says. We have a Greengage which had only a handful of fruit last year. A full size tree, it is absolutely covered this year and those the pigeons don't get (they are working hard on it) will weigh the branches down dangerously. The tree is too big to thin them out. The Cherry tree was also meagre last year, this year had more but most have been stripped by the pigeons. So it's possibly just nature taking a rest!
30 May, 2017
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I think the poor set was because of the weather this spring.
29 May, 2017