When To Cut Back Brunnera Jack Frost? [Details Explained]

Clusters of small blue flowers with attractive silver heart-shaped foliage, this feature of the Brunnera Jack Frost compels anyone to grow it in their yard. Moreover, when it blooms in the beautiful spring and summer seasons, it spreads eye-catching beauty all around the garden. 

But here the catch is, it needs to be pruned back regularly to maintain the health and shape of the plant. Otherwise, your precious Brunnera jack frost will lose all its appeal and get frequently attacked by diseases.

Don’t worry if you don’t have much idea about it. Because In this article, we are going to explore all the topics regarding why and when to cut back Brunnera Jack Frost.

So, without making any delay, let’s get started–

Why Should I Prune The Brunnera Jack Frost?

Good and precise pruning can help your plant in many ways. Some of them are mentioned here– 

  1. Pruning the stems will help your brunnera jack frost to grow bushy in the garden.
  2. By pruning, you can turn a leggy brunnera into a healthy and full growing one.
  3. When you remove the dead or diseased foliage by pruning, you also help the plant prevent the spread of many dangerous diseases.
  4. Also, it improves the appearance as well as the density of the plant.
  5. Sometimes this plant can grow up to 12-24 inches both in height and width. So, by pruning you can control their size from being too large and keep it looking neat and tidy. 

When To Prune The Brunnera Jack Frost?

The best time to cut back Brunnera Jack Frost is in late fall or early winter when the flowers have faded already. By this time the plant already will have finished flowering and after that foliage will start to die back. At this time, you can prune the Brunnera jack frost a few inches above the ground.

The thing is, these plants continue to grow throughout the winter season. So, if you live in an area where the winter is mild you should cut back after the early spring when the plant has stopped growing.

But if you live in an area where the winter is severe, it’s best to prune the plant back in the mid-spring season in order to protect it from harsh winter damage.

However, when you are pruning don’t forget to use a clean and sharp pruning shear. Make a cut just above the leaf node or bud to encourage new growth. Make sure to make the cuts more clean and accurate so that there’s very little damage to the Brunneras.

More importantly, you have to make sure all the dead and damaged leaves are removed as well as the spent flowers. By doing this your plant will be encouraged to grow healthy foliage. In addition, it will also prevent the spread of many harmful diseases. 


Brunnera Jack Frost is a very popular ornamental plant. And you have some work cut out for you to maintain this ornamental value of it. But if you don’t prune it at the right time you might not get the best results from them.

In this article, I included all the information about why & when you should prune the Brunnera jack frosts so that you make no mistake when getting your plant to look all pretty and more attractive for many years to come. 

James Rivenburg
James Rivenburg
James Rivenburg

James Rivenburg is the founder of plantandpest.com, a passionate gardener with valuable experience and knowledge gained through trial and error. The website has a large community of followers who trust his tips and techniques and have succeeded with his advice. He is always Committed to helping others create a beautiful and healthy garden.

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