Yes, there is a wrong way to prune tree and you can spot the damage all over. Topping, flush cuts, and stub cuts all cause lasting harm to your trees. You might not see the problems right away, but they show up over time.
I have watched trees suffer from bad pruning practices all around my neighborhood over the years. One apple tree down the street was topped by its owner to reduce height. Now that tree grows a dense thicket of weak shoots every single year. The owner spends more time fighting water sprouts than he would have spent leaving it alone.
Another neighbor made flush cuts on her pear tree when she first moved in. She wanted the cuts to look tidy against the trunk. Those wounds never healed right. Decay spread into the heartwood and now you can see soft spots growing larger each season. That one choice years ago still costs her tree today.
Stubs cause trouble in a different way. When you leave a stub sticking out past the branch collar, it dies back. The dead wood invites decay fungi and insects into your tree. The rot then spreads into healthy tissue that was fine before. A proper cut just outside the collar lets your tree heal over clean.
Flush cuts remove the branch collar that holds your tree's healing cells. Without this tissue, your tree can't seal off the wound. Disease enters through the open wood and spreads from there. What looks neat at first becomes a doorway for problems that last for years.
Topping creates the worst results of all the pruning mistakes to avoid. When you cut main branches back to stubs, you trigger a panic response. Your tree pushes out dozens of weak water sprouts from each cut site. These shoots attach poorly and often break in storms. A topped tree becomes more dangerous over time, not safer like you hoped.
You should know the main errors so you can stop yourself before making them. Never cut into or through the branch collar. Never leave stubs longer than a quarter inch. Never remove more than one-third of the canopy in one season. Never prune in early fall when your tree prepares for winter.
If you spot past mistakes on your trees, you can fix them over time. Remove old stubs by cutting back to the collar. Take out the weakest water sprouts from old topping cuts each year. Let your tree rebuild strength before you make major changes. Good technique going forward helps your tree recover from bad pruning practices of the past.
Read the full article: Pruning Fruit Trees: A Complete Guide
