Defoliation on a basswood tree.

The gypsy moth (Lymantria dispar dispar) is an invasive insect native to Europe. At the caterpillar stage, it feeds on the leaves and foliage of a wide variety of trees, causing defoliation. In Canada’s Capital Region, the gypsy moth can feed on over 300 plant species, including landscape and garden plants.

Defoliation does not typically harm the tree or cause mortality. Trees often produce new leaves later in a growing season to compensate.

What we’re doing

The NCC is currently monitoring the presence of the gypsy moth on NCC-managed lands. We are also in contact with other regional and provincial stakeholders on this subject. We will work with our partners to ensure a consistent approach in managing this invasive species.

What you can do

If you want to reduce the impact of the gypsy moth on your property, there are individual control options. These consist primarily of physical removal of caterpillars and egg masses.

More information