Pruning Your Trees

Weeping willow after pruning A photo in August 2006  (Photo credit: Wikipedia)

If you have just entered the tree growing world, you have no doubt heard the term “pruning” tossed around by the more veteran growers. Well, I have something to admit. For several years, I did not even know what pruning was. I heard the term a lot, but I never felt comfortable asking someone what exactly it was. Even though it would have benefited my gardening and tree growing, I was too prideful to ask. I’ve found that pride is the reason for the failure of many great endeavors; if I had just asked someone what pruning was, I wouldn’t have undergone a few of the disasters that occurred during my first years of gardening.

Pruning is the removal of dead or unneeded branches to encourage the growth of flowers. Usually, a tree will end up devoting energy to branches that don’t need it, while neglecting branches which are bearing more fruit. If you remove the branches that are taking all the nutrients, you will begin to see a flourish in the other ones. Pruning also keeps the tree in shape by keeping the branches even. This prevents it from becoming weighed down on one side. Having too many branches on one side could cause the tree to become permanently crooked.

Many gardeners don’t even think about pruning their trees until they start to bear fruit. This is a big mistake, and you should never neglect to care for a tree just because it hasn’t yet begun to produce. During the entire process of growth, you should prune the tree in a way that it is even and uniform. Then, when it does start to produce fruit, the results will be significantly greater. It is very easy to tell the difference between a tree that has been pruned regularly during its growth, and one that has been neglected. Generally, the shape of the tree is much more natural looking if it has been pruned.

The first thing to look for when you start pruning is any branches which are dead or diseased. These are quite easy to recognize. Usually, they don’t bear any fruit and might be misshapen or discolored. Don’t hesitate at all in chopping these guys off, as they are nothing but detrimental to the health of your tree. Sometimes a branch can be dead or diseased without making it too obvious. If this is the case, simply wait until the tree is flowering and it will become obvious by not growing anything.

The second type of branch to look for is the branch that is too close in range to all the other ones. If it grows at such a length and angle that the end is right next to all the other branches, they might end up crowding each other out. Take off the smaller of the two branches to allow the larger one to have the breathing room that it needs. This same rule applies to the weight balance of your tree. Sometimes, for reasons we will never understand, a tree will grow several branches on one side and weigh itself into being lopsided.

So hopefully I have provided you with a basic knowledge of pruning. There are more situations and types of branches that require pruning, but what I’ve outlined is the very basic parts. These can alter depending on how old your tree is. For example, for the first 3 years of a tree’s growth, it requires pruning that follows more “formative” guidelines. After the tree is well established, you will need to use “regulatory” pruning to keep it where you would like it to be. There are entire books written on how to prune trees depending on how old they are. There are far too many techniques for me to go over, so if you want to use these advanced techniques then you should go to your local library and check out a book.

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TREE PRUNING Tips

Tree Pruning -  Photo: Wikimedia

There are two kinds of winter gardening. The first method usually starts in January as the gardening catalogs begin to arrive in the mail. This type of gardening is as easy as sitting in your favorite chair, browsing the catalogs, and either dreaming about what you're going to do this spring or actually drawing designs for the gardens you intend to work on.

The second type of winter gardening is to actually get out in the yard and do a little work. Of course, if it's bitter cold, you'd be better off waiting for a good day. Winter is a good time to do some pruning if the temperatures are around 30 degrees or so. I don't recommend pruning if it's considerably below freezing because the wood is brittle and will shatter when you make a cut.

One of the advantages of pruning during the winter is that you can see much better what needs to be cut out and what should stay. At least that's true with deciduous plants. The other advantage is that the plants are dormant, and won't mind you doing a little work on them.

Ornamental trees should prune to remove competing branches. Weeping Cherries, Flowering Dogwoods, Flowering Crabapples etc. have a tendency to send branches in many different directions. It is your job to decide how you want the plant to look, and then start pruning to achieve that look.

But first, stick your head inside the tree and see what you can eliminate from there. This is like looking under the hood, and when you do you'll see a lot of small branches that have been starved of sunlight, that certainly doesn't add anything to the plant.  They are just there and should be cut out. 

Any branch that is growing toward the center of the tree where it will get little sunlight should be cut out. Where there are two branches that are crossing, one of them should be eliminated. Once you get the inside of the plant cleaned up, you can start shaping the outside.

Shaping the outside is actually quite easy. Just picture how you want the plant to look, and picture imaginary lines of the finished outline of the plant. Cut off anything that is outside of these imaginary lines. It is also important to cut the tips of branches that have not yet reached these imaginary lines in order to force the plant to fill out.

For the most part, plants have two kinds of growth: Terminal branches and lateral branches. Each branch has one terminal bud at the very end and many lateral branches along the sides. The terminal buds grow in an outward direction away from the plant. Left uncut they just keep growing in the same direction, and the plant grows tall and very thin. That's why the trees in the woods are so thin and not very attractive.

When you cut a branch on a plant, the plant sets new buds just below where you cut. When you remove the terminal bud the plant will set multiple buds; this is how you make a plant nice and full. Don't be afraid to trim your plants, they will be much nicer because of it. The more you trim them, the fuller they become.

Lots of people have a real problem with this. They just can't bring themselves to prune. Especially when it comes to plants like Japanese Red Maples. It kills them to even think about pruning a plant like this. Just do it! You'll have a beautiful plant because of it. 

Look at the plant objectively. If you see a branch that looks like it's growing too far in the wrong direction, cut it. If you make a mistake it will grow back. Not pruning is the only mistake you can make. I hope this helps and doesn't get you in trouble with your significant other. Many a family feud has started over pruning.

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