is the risk of frost to plums limited to the blossom only. Is it safe once the fruit has set
By Lakerise
United Kingdom 
victoria plum, four years old
28 Apr, 2009
Previous question
« I have 3 large cordylines planted in garden ,that the leaves are turning brown on...
Next question
Do you cut off the flowers now or do you let them die right back »
Frost usually affects the blossom as you say and not the fruit. If you are going to have a big dip in temp then you could cover the tree with fleece or an old bed sheet, if it's a small tree. Otherwise it will have to take it's chances if it is a big tree.
Good luck.
28 Apr, 2009