Seeing ugly black lumps on your cherry or plum tree? That is black knot, and it spreads. We remove black knot from trees across Edmonton and prune to slow it down, before it takes the whole tree.
Black knot is a common fungal disease that attacks trees in the cherry and plum family, including mayday and schubert chokecherry, which are all over Edmonton yards. It shows up as hard, black, lumpy growths along branches, and it spreads year after year if left alone.
The fix is to prune the infected wood well below each knot, at the right time, and dispose of it properly so the spores do not reinfect the tree. Done early and thoroughly, it can save the tree. Left too long, the whole tree often has to come out.
Cutting out infected wood well below each knot.
Thinning and shaping to help the tree recover.
Infected wood removed and destroyed so it cannot reinfect.
Judging whether the tree can be saved or should come out.
See detailsCare for the species most affected in Edmonton.
Taking out trees too far gone to save.
More on thisHalf-hearted cuts just spread it further. Here is the thorough approach.
ISA Certified expertise means the right cut and the right call for the health of your tree.
The correct equipment and rigging for the site, so the work is done without damage or risk.
We take away every branch and chip, so all you notice is the tree gone and the yard tidy.
A free on-site assessment and a clear written price, with nothing added later.


We assess the job and give you a clear written price.
Pick a time that works, or call 24/7 for urgent jobs.
Our crew does the job safely with the right equipment.
We clear all debris and leave your property spotless.
Black knot is best pruned out in late winter, while the tree is dormant and the fungus is inactive.
Cutting in the dormant season, well below each knot, and destroying the infected wood gives the tree its best chance. Pruning in the growing season can spread spores, so timing matters. If your cherry, plum, mayday or chokecherry has black knot, the sooner it is dealt with the better. Learn to spot it in our guide to black knot disease.

Book a free on-site assessment, or call now for 24/7 service across Greater Edmonton.