An Introduction to Pruning, Or, How to Prune Successfully and Not Kill Your Tree in the Process!

Pruning. So easy to get wrong, but not thatmentioned above, dead, dying or dangerous wood
difficult to get right once you know a few simpleshould be removed as soon as it is observed. You
techniques. Unfortunately, pruning is a fact ofcan then move on to considering the health of
gardening life if you want vigorous, attractivethe tree. This includes removing any diseased or
trees, but if you're like my husband then yourinfected wood, any crossing or rubbing branches,
approach up until now may have been to hackand areas of congestion which block airflow
off a few branches that vaguely look like they'rethrough the crown, encouraging pests and disease.
in the wrong place, and then hope like blazes it allThese areas can be thinned.
turns out alright next spring.Finally, consider aesthetics. What form or shape
This obviously isn't the best approach, so Ido you want the tree to develop over time; what
thought I'd address the basics of pruning in thisis the natural form and character of the tree? To
article (which I'll leave lying around for my husbandremain healthy and vigorous a tree needs good,
to come across, I think...)balanced structure, and again, this is easiest to
There are 4 main considerations when pruning:see while the tree is dormant.
What, when, why and how are you pruning?Point 3: Prune for safety, health and aesthetics, in
What are you pruning?that order.
Assuming you have a mature tree, the firstHow are you pruning?
consideration is whether you have a fruit or anArmed with the answers to the above 3
ornamental tree. Fruit trees tend to be morequestions, you can now get onto the actual
complicated, as you will need to consider whetherpruning. Obviously this can get fairly technical, but
the tree is tip or spur bearing - in other words,we'll stick with the home-gardener basics here.
does it fruit on old or new wood? Most fruit treesFirstly, arm yourself with clean, sharp secateurs
are spur bearing, that is, they fruit on old wood.and pruning shears.
The main exceptions being peaches andCuts should be made angling down and away
nectarines which fruit on new season's growth,from the tree. When removing dead material
however a quick google of your tree varietal willensure you cut on the dead wood, rather than
tell you what you need to know.the living branch collar to avoid damaging the tree
Point 1: ornamental or fruit, and tip or spurfurther. If the branch is fairly large you may also
bearing?want to use a 3-step process by removing some
When are you pruning?of the weight of the branch before your final cut,
The best time to prune your tree is during thereducing the chance of tearing.
dormant season when the tree is least likely toWhen thinning your crown the key is to
go into shock and the lack of foliage means youdetermine which branches you want to remove,
can easily observe the structure of the tree. Thebefore you start (it's easy to get carried away,
exceptions are trees which flower early in spring.and end up removing far more than you
These require pruning immediately after floweringintended!) I tie red cotton to the branches I plan
to allow new wood to develop for the followingto remove, and remove only those branches.
year's flowers, with common examples includingThen take a good step back, look at your tree
dogwood, magnolias and lilacs. One extra point -and see if there are any other areas needing
dead and dangerous wood can be removed atattention. Always start by taking less - you can
any time.always go back and cut more if you need to.
Point 2: Prune in winter unless you have an earlyFinally, take a step back and look at the shape of
flowering ornamental...your tree. Is it balanced? Does it display good
Why are you pruning?structure? Is there clear airflow? If yes, then you
There are 3 main reasons to prune a mature treecan breathe a sign of relief on a job well done.
- safety, health and aesthetics, in that order. As