Pruning Trees (part 1 of 2)

Pruning is an essential part of caring for urban trees. In nature, trees self-prune in response to different environmental influences. In a yard or boulevard, trees may require help from humans to be good tree citizens in a people-dominated world. Formative pruning on young trees can help them grow to be strong and beautiful. Pruning on larger trees can improve the safety and health of the tree. Keep in mind that improper pruning is detrimental to the overall health and vigor of a tree. Before you prune be sure you are educated and informed on the proper methods of pruning and always consult a professional if you are unsure.

Reasons to Prune

There are several reasons why it may be necessary to prune your tree. Here are a few of them:

• To remove broken or damaged branches
• To remove diseased limbs or limbs infested with pests, fungus or bacteria that may affect the overall health of the tree
• To train a central leader
• To thin the crown of a tree to allow for air movement
• To raise the crown of a tree to allow clearance from sidewalks or streets

When to Prune

• Newly planted trees should not be pruned within the first two growing seasons except to remove dead or damaged branches
• Coniferous trees may be pruned any time of year, but sap flow will be minimized during the dormant season
• Non-flowering deciduous (shade) trees should be pruned when they are dormant (winter in Minnesota)
• Early spring bloomers (redbud, magnolia and others) should be pruned immediately following flowering in the spring to maximize their blooming capacity
• Crabapples, apples, plums and other fruit trees should be pruned in the dormant season just after the coldest weather has passed
• Dead or broken branches can be removed at any time of year

Check in with us on Thursday, Jan 31 to learn how to prune.

Read Part 2 here.