online store How To Care For Your Kingsville Boxwood Bonsai Tree
How To Care For Your Kingsville Boxwood Bonsai Tree

How To Care For Your Kingsville Boxwood Bonsai Tree

Buxus Microphylla Bonsai Care

About The Kingsville Boxwood Bonsai Tree

The Kingsville Boxwood is a Japanese treasure, with the smallest leaves of all of the Boxwood’s.  It will work wonderful indoors, or out (depending on where you live) and will maintain its size for years as it’s a pretty slow grower.


Your Kingsville Boxwood needs to go semi-dormant in the winter, keep it away from direct sunlight (a northern windowsill works great for this) and keep it cool — around 50 degrees.  A shed, a garage, or even an attic with a window would work well.

Do not forget to water your tree in the winter!

The rest of the year, it would be quite happy being outdoors with some good morning sun.


A Kingsville Boxwood bonsai loves a good watering, and hates drying out. Once a week should suffice when it’s dormant, gradually increasing to every 1-2 days over the summer.

Do not let your Kingsville Boxwood bonsai dry out!


If your Kingsville Boxwood bonsai tree is wintering in a cold shed or garage, using a humidity tray is recommended to prevent spillage from watering.


Since your Kingsville Boxwood bonsai is in a small pot, and not the ground, it needs nutrients.  A slow release (pellet based) fertilizer is perfect for this, and can be added sparingly every 1-2 months during the growing season.

Pruning & Trimming

Trim back the new growth to the farthest safe point that looks good to you — but never remove all of the new growth.

A regular trim will help keep your Kingsville Boxwood bonsai tree short, while helping the trunk grow thicker.

For Kingsville Boxwood bonsai’s, it may be easier to “pinch” new growth with your fingers, rather than using a tool.


Repotting must be performed periodically on your bonsai, Kingsville Boxwood included, when its root system has filled the pot.  If you can clearly see the roots coming out of the bottom of the pot, it’s time to repot your bonsai.

Generally, this means every 2-3 years for a deciduous tree and every 4-5 years for an evergreen like your Kingsville Boxwood.

Repotting should be done in mid-summer, when the tree is at it’s least fragile state.

The Kingsville Boxwood bonsai, along with all of its soil, should be removed from the pot.  From there, you can trim away no more than 1/3rd of the root mass (1/4th is preferred.) 

Then you can repot the tree in the same pot, or give it a newer / bigger pot to thrive in.

After repotting, your bonsai Kingsville Boxwood should be thoroughly watered.

Diseases, Insects & Other Pests

Your Kingsville Boxwood bonsai can be treated for pests like a normal Kingsville Boxwood tree.  Just remember, your tree is miniature and will need a much smaller and more gentile dose of treatment.

Would you like to SEE these instructions as a series of videos, instead of just reading them?

If you want to demystify the art of bonsai so you can become a master of this relaxing hobby in just a few days, you need the right training. I’ve built a digital video course that mixes classroom style instructional videos with “over the shoulder” style training videos to make bonsai simple to understand, and easy to start.

In this digital video course, you'll discover:

  • How to create a bonsai tree from scratch that will help you experience true inner-peace and calm.
  • How to keep your tree collection alive and well so you can enjoy their benefits for a lifetime.
  • How to shape your bonsai like a professional, allowing you to design it however you like.
  • What bonsai tools you really need and how to use them so you’ll never buy a tool that you don’t need again.
  • How to cultivate your own trees so you never have to buy another tree from a store again.
  • How to use all of this to create your own bonsai collection so you enjoy this relaxing hobby for the rest of your life.

Previous article How To Care For Your Arbequina Olive Bonsai Tree