If you have the right soil, blueberries are one of the easiest to grow fruits. They can live for 50 years or more, require little care, have no pest or disease problems to speak of, and can easily be grown as no spray fruits. They are so easy to care for that many people never even bother to prune them. However, some light pruning can turn your so-so crop into a bumper crop. Today we are going to take a look at how to prune blueberry bushes.
Pruning blueberries is typically done in the winter when the plants are dormant. It is a bit of a balancing act. Prune too much and you get lots of new growth and very large berries but not very many of them. Prune too little and you get dense twiggy bushes with almost no new growth. This twiggy growth is weak, produces small berries, and no new wood for future crops.
Blueberries are ideally pruned every single year.
You want to encourage the plant to produce a moderate amount of new growth every season which will result in consistent future production. Many times, blueberries are pruned infrequently and are pruned hard every few years. This is undesirable.
If you prune your bushes hard, they will produce a lot of new growth which is great, except that all that new growth is the same age and will get old at the same time. The result is that you get very inconsistent production. Pruning in a way that causes the production of tons of new growth creates a temporary fruit slump the following season. Then the canes all come into peak production and get old at the same time. Removing all these canes when they get old and unproductive would result in practically cutting the bush to the ground. Obviously not ideal.
So how do we prune blueberries for optimum consistent production?
Start by removing anything dead, damaged, or that is too low and going to be laying on the ground when carrying fruit. Once you have done that, remove weak spindly growth from the base. These are often shoots that sprouted in late summer. Also remove old, unproductive canes. These are the canes that have little to no new growth on them. They are often very twiggy.
If necessary, thin the canopy to allow airflow and light inside. If your plant tends to overbear fruit resulting in small berries, you can also thin some of the small fruiting branches that are loaded with buds. This will encourage the bush to put more energy into producing larger fruit.
Lastly, if your bush has enough shoots and you prune yearly, remove the 2 oldest, least productive canes. If you strive to have a bush with 8-10 canes and you remove the oldest two every year, you completely rejuvenate your bush every 8-10 years. This helps keep your blueberry bush young and productive.
What if your bush is old and does not have any new growth?
On old, neglected bushes, you should cut about 1/3 of the oldest canes down to the ground. This will encourage the plant to send up new shoots in the spring. Next fall you can remove more of the older canes resulting in a rejuvenated bush in a few years’ time. Simple as that!
Blueberries really are one of the quickest, easiest things to grow and prune on our farm. So if you’re like most people who have never pruned their blueberry bushes, we encourage you to go out and give it a try this winter! You will likely be rewarded with the delicious results for many years to come.
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