Q.Ornamental crossing with non-ornamental
Hello,
My ornamental crab tree has cross-pollinated with my crab apple tree…two fairly main branches of the same tree in the yard had ornamental apples, and the rest were beautiful normal sized apples.
I live in zone 2 I believe…NW Sask. Canada.
Is it too late to cut the affected branches off?
TJ

A photo would help, and an indication of the percentage and size of branches that you want to remove.
Do you want to preserve the ornamental fruiting crab apple portion, or the full size apples on that particular tree, it's not clear.
Removing branches is best done during dormancy, and it's best not to remove more than 25% of the foliar canopy in a one year period.