Invasive Species Awareness Week Day 5: Invasive Trees and Tree of Heaven

We have a couple of invasive tree species here in the Okanagan and Similkameen and one is the frustrating Tree of Heaven. Tree of Heaven is believed to be the fastest growing tree in North America, making it outcompete many of our native species. It is also allelopathic, meaning that it can make the soil around itself toxic to other plants. This tree can easily establish itself into disturbed areas and is quite tricky to get rid of. Cutting the tree can just trigger the plant to sucker and create more trees. It is bad enough on its own, but it might end up bringing another unwanted friend to BC.

This undesirable friend is the Spotted Lanternfly. While this fly is quite striking and beautiful, it can be quite destructive. The main issue people have with this insect is that is can damage most fruit trees and grape vines, which could be quite detrimental in the Okanagan and Similkameen. Tree of Heaven, is the host plant for the Spotted Lanternfly, which means if it makes it to BC, it will be able to thrive quite easily.

Thankfully, this fly has not yet established itself in BC, but we are on the lookout since they are already south of the boarder. If you do see this fly, report it to the CFIA as soon as possible.

We hope you learned a little more about invasive species this week. Invasive species management is an ongoing battle, but learning is the most important step in the fight to control them.