Xtremehorticulture

Prune Larger Shade Trees to Save Water and Be a Good Neighbor

 Q. I have a 20-year-old African sumac nearly 30 feet tall which provides great shade in my backyard. It needs another pruning when it cools off. I did a major cutback last fall at the request of my neighbor because of leaf drop. Any suggestions on how best to do so and keep the shade and cooler temperatures it provides? Drop crotching an African Sumac that is too tall will save water. A. Two things you need to know if you are doing this yourself; drop crotching and how to do a 1-2-3 pruning cut. Stand away from the tree so that you can see all of it. Identify the limbs giving you the problems. Trace the limbs back to a lower crotch. A crotch is where at least two limbs come together. This is where the pruning cuts and lowering will be done. In a 1-2-3 cut the first cut is made 12 inches from the tree trunk and upward to prevent a large limb from pulling the bark from the trunk Make a 1-2-3 Pruning Cut During cooler weather remove the limbs that are offensive. Use a 1-2-3 cut to avoid stripping the bark from the tree. A 1-2-3 cut is done first by making an undercut six inches from a limb to about 1/3 of its diameter. The second cut is made outside of the first cut. Attached bark may strip down to the undercut, or first cut, so the falling limb will not tear the remaining limb and tree trunk. This is why the undercut is made first. A third cut is used to finally remove the remaining stub. It is a finished cut. The third cut is the smallest cut made that removes most of the stub remaining so the cut heals faster. If you have never done it, for safety reasons and a better-looking tree, hire a certified Arborist to make these pruning cuts so that it will make the tree smaller and keep it beautiful. Part of your payment is for decisions that result in a prettier tree than you could have done.

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Acacia Damaged by Low Temperatures and How to Remove Limbs

Q. Any advice on Acacia trees would be great.  These trees took a hit when the temps dropped to the 20’s in December.  I see new growth, but mostly on the suckers.  Should I leave the suckers there or remove them? What is the best thing to do to help these trees recover? A. This is more complicated. First you will remove any wood you know is dead. By now (June), any part of the tree which is still alive should have thrown out some growth. Remove any limbs that are dead (no growth coming from them) by cutting at point of attachment to another limb or the trunk.  You should not leave any stubs when you are done.             If the limb is large and heavy, you should remove it by either removing sections of the limb at a time that are manageable or use a technique that we sometimes call the 1-2-3 method. This is demonstrated pretty good on removing a limb on wikihow. Here is our sequence of cuts at the Orchard. Cut number 1 is made upward about a foot from where the final cut will be made. The second cut is made downward a few inches away and to the outside of the first upward cut. The weight of the large limb causes the limb to begin splitting when it falls. The split occurs from the outside second cut to the upward first cut. The prevents the limb from splitting down the side of the branch and into the trunk. This is a look at the limb that has split from the branch and now lies on the ground. The third and final cut in the 1-2-3 limb removal sequence is made at the proper distance from the trunk. This leaves the trunk/limb “shoulder” in place and finds the balance between the smallest cut possible and not leaving a stub. The cut is left to heal on its own and no coating or sealer is used.   This is a different tree but gives you an idea of what the “shoulder” looks like and where it might be located on a much smaller limb.  Next, remove any broken branches. They will not repair themselves. Remove any wild or “sucker” growth. This type of growth usually has weak attachment to the trunk and not support itself in years to come. Remove any growth coming from the trunk that is not high enough in the future.             This growth will not get any higher and as it gets bigger will “sag” or bend downward perhaps into places where you can bang your head. Remove these by making a “flesh cut” in other words remove it all and don’t leave a stub.             Finally thin out the remaining branches so that any dead wood is removed (again by making “thinning cut” which is the same as in the third sentence, removing it at a point of attachment without leaving a stub.) Try to have the remaining branches going in different directions to help balance the crown visually.             I hope this helps. By the way, I would do any major limb removal next early spring after the worst temperatures have passed. Minor cuts (with a hand shears) can be done any time.

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