I realize that I’m hitting my head against a brick wall, but here I go anyway. What was the purpose of pruning the tops off of those trees? What was accomplished? How will this tree now respond to this pruning? When making decisions to prune, and how to prune, is there any consideration of the trees physiology; growth hormones; morphology; anatomy; future decay; future maintenance? ...This is what the homeowner wanted- Ok,OK.
I’m sure the person who did this pruning took pride in what he was doing, and probably did the best job he could- I do not want to take away from his effort. But, this type of pruning was unnecessary and will only lead to future problems for the tree, plus increased maintenance and cost. The apical dominance was removed from the tree. The cuts that were made are basically heading (topping) cuts which will lead to excessive suckering at the heading cuts. When you cut back to a horizontal limb, regardless of its size, if the limb is not in the correct position to assume the terminal role, you get suckering. Suckering (water-sprouts) is the trees (or limb) response of losing its apical dominance- and its ability to produce auxin, which suppresses the suckering effect. Auxin is the trees hormone that is produce in the terminal buds to regulate growth. You guys know this. Excessive suckering is also the trees response to damage- either natural damage (hurricane) or man-made damage (topping)(heading).
Also, silver maple is not a good compartmentalizer. It is a soft wood which is more prone to rot than a hardwood maple. The sap and heart wood of the limbs that received heading cuts, heart rot may set in unless the tree has enough vitality to set up a defense system to wall off the pending decay.
We have the science available to provide better tree care. I’m dumfounded why we are not availing ourselves to it, and why much tree care is archaic and barbaric! These trees will never be the same, and will never regain their natural graceful form. The trees will react negatively by having to redirect resource allocation to excessive water sprouts, and compartmentalization of decay.
I do not wish this post to be interpreted as an attack on anyone. I am simply trying to share simple arboriculture science, and share that there is a better way to prune trees, such as maintaining the natural form of the tree and its apical dominance. We should be concentrating on fixing structural problems, and maintaining the natural form of the tree.
Note: I do understand that there are exception to the rule.
I’m sure the person who did this pruning took pride in what he was doing, and probably did the best job he could- I do not want to take away from his effort. But, this type of pruning was unnecessary and will only lead to future problems for the tree, plus increased maintenance and cost. The apical dominance was removed from the tree. The cuts that were made are basically heading (topping) cuts which will lead to excessive suckering at the heading cuts. When you cut back to a horizontal limb, regardless of its size, if the limb is not in the correct position to assume the terminal role, you get suckering. Suckering (water-sprouts) is the trees (or limb) response of losing its apical dominance- and its ability to produce auxin, which suppresses the suckering effect. Auxin is the trees hormone that is produce in the terminal buds to regulate growth. You guys know this. Excessive suckering is also the trees response to damage- either natural damage (hurricane) or man-made damage (topping)(heading).
Also, silver maple is not a good compartmentalizer. It is a soft wood which is more prone to rot than a hardwood maple. The sap and heart wood of the limbs that received heading cuts, heart rot may set in unless the tree has enough vitality to set up a defense system to wall off the pending decay.
We have the science available to provide better tree care. I’m dumfounded why we are not availing ourselves to it, and why much tree care is archaic and barbaric! These trees will never be the same, and will never regain their natural graceful form. The trees will react negatively by having to redirect resource allocation to excessive water sprouts, and compartmentalization of decay.
I do not wish this post to be interpreted as an attack on anyone. I am simply trying to share simple arboriculture science, and share that there is a better way to prune trees, such as maintaining the natural form of the tree and its apical dominance. We should be concentrating on fixing structural problems, and maintaining the natural form of the tree.
Note: I do understand that there are exception to the rule.