Tree Pruning in Lawrence and Topeka

Walk any street in Lawrence or Topeka after a June thunderstorm and count the trees that split down the middle. Most of them failed at the same defect, a co-dominant union. Two stems of roughly equal size compete for the leader position, neither one wins, and the bark on the inside of the fork gets pinched between them instead of the wood growing together. That trapped bark is called included bark, and it means the two stems are pressed against each other rather than joined. There is no wood fiber crossing the union to hold it.

On a fifteen year old silver maple that union is maybe three inches across and easy to correct with a single cut. On a forty year old one it is a twelve inch crotch carrying half the canopy, and the only options left are a cable, a heavy reduction, or a removal. The cost curve between those two moments is steeper than almost anything else in tree care.

Pruning is also how you set clearance before you need it. Raising a canopy gradually over ten years, one whorl of low limbs at a time, gives you a tree you can walk under and mow beneath without ever making a large wound. Doing it all at once on a mature tree means removing branches four and six inches across, which is a wound the tree may never fully close.

A newly planted tree gets almost nothing done to it in year one. Take out broken and dead material, take out anything rubbing, and leave everything else. The tree needs every leaf it has to build a root system in Kansas clay, and a heavy first year pruning is one of the more common ways a good tree gets set back.

Years three through ten are the working window. A visit every two to three years, twenty minutes to an hour of actual cutting, is enough to pick the leader, subordinate the competitor by cutting it back rather than removing it outright, and clear crossing limbs. Bur oak, chinkapin oak, hackberry, and Kentucky coffeetree all respond well to this because they naturally hold decent form and only need nudging.

Trees that need it most are the ones that grow fastest. Silver maple, honeylocust, and Siberian elm all put on height quickly and all form multiple competing leaders as a matter of habit. A pin oak planted in a Topeka front yard will usually keep a central leader on its own and needs less intervention, though it often needs iron in our alkaline soils, which is a separate conversation.

The work looks small from the sidewalk. On a fifteen foot tree it is often four or five cuts, which is why it is inexpensive and why so few people call for it.

Nothing here requires a bucket truck on a young tree. Most of it happens from the ground or a short ladder with hand tools.

You cannot structurally prune a sixty year old bur oak. The architecture is set and the cuts required to change it would be large enough to invite decay. What is still available on a mature tree is worth doing anyway: removing deadwood, reducing end weight on the long horizontal limbs that lever hardest against their attachment, and taking out a single hazardous limb over a target.

End weight reduction is the underrated one. A horizontal hackberry limb running thirty feet out over a driveway is a lever, and every pound at the far end multiplies the stress at the union. Shortening the last six feet back to a lateral removes a small fraction of the leaf area and a large fraction of the bending moment.

Where a mature tree has a defect that pruning cannot fix, cabling and bracing or a crown reduction are the next tools, and sometimes the honest answer is that the tree has run its course. Kansas Forest Service rates 59 percent of the state's urban canopy as fair to poor, dominated by aging silver maple, elm, and pin oak, which is a fair description of a lot of the older Topeka and Lawrence neighborhoods.

Angi prices pruning at $200 to $800 per tree and notes that pruning and trimming tend to cost about the same, since both are billed on crew time and tree size rather than on the label. HomeGuide's arborist guide agrees at $200 to $800 per tree, or $50 to $125 an hour for trimming and pruning labor. ProMatcher's Kansas contractor data puts a two man crew at $128.66 an hour, though that figure carries a 2018 date on the source page and should be read as a floor.

Structural pruning on a young tree is the cheapest work on this site and usually lands against a minimum job charge rather than a per tree price. HomeGuide puts industry minimums at $100 to $300. The sensible move is to have every young tree on the property done in one visit, since HomeGuide puts the multi tree saving at 10 to 25 percent per tree.

Timing follows the same rules as trimming. Dormant season, roughly January through early March, for almost everything. Oaks never get pruned April through July because of oak wilt, and American elm stays out of that window as well. Fresh wounds during the growing season are an invitation, and on an oak the invitation gets accepted.