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Juniper Bonsai Care

You will read how easy juniper bonsai care is.  However, like any bonsai they are easy, if you know how

Consider this bonsai as an "outdoor tree."  Growing them indoors is possible, but definitely more complicated.  If you must grow indoors, high light and good air circulation are very important.

Read more about growing bonsai indoors.

Junipers should be kept moist but not soaking wet.  They even like to dry out a little between waterings.  If you have fast draining soil, watering should not be a problem.

If you have 'heavy' soil, it holds a more water and often stays too wet. This situation can eventually create a bad fungus in the soil. Long term, it can kill your tree.

It is especially important for junipers to be in coarse, fast draining soil ("bonsai soil".)

Juniper Bonsai Care and Pests

Juniper in Wirral, England exhibit

If you have plants of any kind, you will occasionally have pests.  One of the most insidious is the red spider mite ... and it especially loves these plants.

The first clue of mites is usually a grayish cast to the needles. A clue to the more advanced stages of this pest is dense cobwebs. 

Since mites are almost invisible to the naked eye, a simple way to check is with a white piece of paper.  Place the paper under a branch, tap the branch and look closely.  If you see something red, tiny and crawling around on the paper, you have a problem.  Mites can easily spread to other plants.


There are many pesticides to use – organic and chemical. One good choice is the Safer Brand Insect Killing Soap, Ready to Use Spray

.Don't wait, treat problems immediately!

Another pest (and potential disaster) is the Juniper twig girdler. (Fortunately, it isn't a problem that often.)  Periploca nigra, is a small moth whose larvae can significantly damage a tree. It's difficult to see, because it chews under the bark.

Sprays do not kill borers! The best way is to eliminate them is to find them and dig them out.  Sometimes there is more than one. 

Even if you think you've got them, use a systemic insecticide.

The cycle of this moth is scary. Once they pupate, the moths return to the same plant to lay their eggs.  The entry point is difficult to see without a magnifying glass.  The first sign may be frass (looks like sawdust.)

And sorry, but this is not the only larvae that can attack your bonsai, read more about "frass," borers and what to do!

Hopefully, you will never get any of these pests.  However, they are a good reason to make 'daily observation' a part of your juniper care.

Where to go From Here

Leave Juniper bonsai care and return to the main juniper page

Bonsai Pests

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There are many pesticides to use – organic and chemical. One good choice is the Safer Brand Insect Killing Soap, Ready to Use Spray