🌿 Managing Tree of Heaven in the Northeast Tree of Heaven is far too common here in the Northeast — and for good reason, it’s considered highly invasive. It spreads aggressively, reproduces rapidly, and quickly colonizes the space around it, crowding out native plants and disrupting local ecosystems. Management depends on the size of the plant. For small specimens, a targeted foliar application can be effective. For larger, established trees, the hack-and-squirt method is recommended, allowing