I cut down several medium sized eucalyptus trees. They keep regrowing from
shoots from the stump at a very rapid clip (10 feet in 6 months).
In the old days we would buy a few sticks of dynamite at the friendly
hardware store, but the stuff is hard to come by these days. How can I kill
them so they will stay dead?
I had this problem with a black walnut tree. So the next time I needed
to get rid of black walnut trees, I girdled them. To my amazement they
took about 4 years to die. They looked normal for three years and the
4th year the leaves started to come out in the spring and then they
died. I don't have any suckers coming up. Imagine if I had not done
that and all that energy had gone into suckers. It could have lasted
And, yes I had girdled them deep enough. I went through the bark,
through the cambium layer and into the phloem and removed part of that.
For those trees that are still sending up shoots. I would apply
concentrated roundup to the shoots. Cut off any part of the shoots you
can't apply roundup to. It may take several applications.
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Although black walnut trees are protected in my area (California), I
have resorted to Roundup in defending against invasions of the tree of
heaven. This invasive tree can grow a foot a month and can spread like
I have also sprayed Roundup in the girdled cuts deep into the bark. I
have noticed, however, that spraying directly on leaves is the quickest
way to get the Roundup to work. It may take several weeks to see the
effects, especially if the leaves are beyond your reach. After several
months, all the leaves will yellow, brown, fall and die. The dead tree
will gradually collapse after a couple of years.
Normally I stay away from herbicides, but my trusty weed twister is no
match for the tree of heaven, especially when it's already several feet
We also have eucalyptus trees near our homes in my area, but, although
they can be a nuisance, I don't think anyone has tried to use a
chemical solution so far.
Best of luck with your eucalyptus tree problem. I'd be curious to know
if Roundup (or other chemicals) works on them.
EWIRM: Nature makes trees, humans make weeds!
Stephen Henning wrote:
Chemicals are not necessary if you just have a little diligence. New
sprouts just need to be removed after they push up a few feet, cut them
all off completely do this a few times and most trees will die. You can
also put down a piece of old carpet after cutting off the first load of
sprouts. Once the tree depletes is food reserve in the root it will
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