Ash Tree Pruning - Ask Extension
Can you give us any advice on pruning a mature ash tree (we are in Fort Collins, CO)? We plan to do the work ourselves, but want to make sure we do ...
Knowledgebase
Ash Tree Pruning #254333
Asked June 15, 2015, 4:50 PM EDT
Can you give us any advice on pruning a mature ash tree (we are in Fort Collins, CO)? We plan to do the work ourselves, but want to make sure we do it properly. It appears to possibly be too full and is too low to the ground and close to the house. From what we read, it is best to prune in early spring or fall. Is there any harm in removing some of the lower branches in the summer? Thank you!
Larimer County Colorado
Expert Response
Hello,
While I can understand your desire to prune the tree yourself, I would strongly suggest that you consider hiring a certified arborist to do the pruning for you. Especially since the cuts you plan on making are greater than 2" in diameter. Visit the International Society of Arboriculture to find a certified arborist in the Fort Collins area: www.isa-arbor.com
Here is information on pruning maturing shade trees (though I would say that your tree is mature) and includes how to make proper pruning cuts. Pruning incorrectly can result in stress, disease and insect issues, as well as potential decay. http://www.ext.colostate.edu/mg/gardennotes/615.html#hire
As for time of year, the best time is in spring prior to budbreak, but pruning midsummer (after the leaves have hardened) is also a good time. Avoid pruning in fall as it can stimulate growth, which may not harden off prior to winter.
While I can understand your desire to prune the tree yourself, I would strongly suggest that you consider hiring a certified arborist to do the pruning for you. Especially since the cuts you plan on making are greater than 2" in diameter. Visit the International Society of Arboriculture to find a certified arborist in the Fort Collins area: www.isa-arbor.com
Here is information on pruning maturing shade trees (though I would say that your tree is mature) and includes how to make proper pruning cuts. Pruning incorrectly can result in stress, disease and insect issues, as well as potential decay. http://www.ext.colostate.edu/mg/gardennotes/615.html#hire
As for time of year, the best time is in spring prior to budbreak, but pruning midsummer (after the leaves have hardened) is also a good time. Avoid pruning in fall as it can stimulate growth, which may not harden off prior to winter.
