The best prune cherry tree timing falls in late winter when the tree sits dormant but the worst cold has passed. Aim for February through early March in most climates. This window gives your cuts time to heal before spring growth starts.
Cherry tree pruning season matters more than with many other fruit trees. I learned this after pruning a young Bing in late summer one year. The cuts oozed sap for weeks and two branches died back over the winter. My neighbor's tree, pruned in February, healed clean and grew strong that spring. The timing made all the difference.
Two nasty diseases spread through fresh pruning wounds on cherry trees. Bacterial canker enters through cuts made in wet weather and kills branches within a season. Silver leaf fungus does the same thing when spores land on open wounds. Both diseases stay dormant in winter along with your tree so late winter cuts avoid the peak infection risk.
Dormant pruning cherries brings other benefits beyond disease control. You can see the branch structure with no leaves in the way. Crossing branches, dead wood, and tight crotches show up plain when the tree stands bare. The tree also stores energy in its roots during winter and puts that power into healing cuts fast once spring warmth arrives.
Wait for the coldest weather to pass before you start cutting. Frozen wood splinters instead of cutting clean and extreme cold can damage fresh wound edges. Watch for buds that start to swell and get your pruning done before they open. This usually gives you a four to six week window in late winter.
When to prune cherry trees also depends on the age of your tree. Young trees need training cuts to build a good frame in their first few years. Remove branches that grow toward the center or cross other limbs. Keep three to five strong scaffold branches spaced around the trunk.
Mature trees need less cutting each year. Focus on dead wood, diseased branches, and any growth that blocks light from the center. Sweet cherries do well with a central leader shape while sour cherries often grow better with an open vase form. Never remove more than 20-25% of the canopy in a single year.
Summer pruning has one good use on cherry trees. Light thinning cuts in July can control size on trees that grow too fast. These cuts heal slower but they also slow regrowth more than winter cuts. Save major work for late winter though since summer wounds stay open to infection longer.
I mark my calendar each year for mid-February and check my cherry trees then. Sharp bypass pruners handle small cuts while a pruning saw takes off larger branches. Clean your tools with rubbing alcohol between trees to avoid spreading disease. The whole job takes an hour or less once you know what to look for.
Get your timing right and pruning becomes a simple annual task. Your tree heals fast, grows strong, and produces better fruit. The late winter window works every year in every climate that grows cherry trees.
Read the full article: Growing Cherry Trees From Seed or Sapling
