Scotch broom (Cytisus scoparius) is found along the east and west coasts of North America and in Idaho, Montana, and Utah. Native to northern Africa and parts of Europe, it was first introduced to North America on the east coast and was later introduced to California as an ornamental.Why is Scotch broom so invasive?
As the shrub grows, its inner stems die back, providing highly flammable fuel for wildfires — just another reason to eradicate this invasive shrub. Scotch broom spreads solely by seeds held in pods which split when dry, popping explosively and ejecting seeds some distance from the plant.How do you get rid of Scotch broom?
Spray is most effective before and after bloom when the Scotch broom is growing vigorously. Treat new seedlings yearly. IPM: Mow in early spring. Cut shrubs that are 1 inch or larger in diameter in late summer to the ground. These stumps often don’t need herbicide treatment.What is the difference between Spanish broom and Scotch broom?
Spanish broom (Spartium junceum) and French broom (Genista monspessulana), Class A noxious weeds in Washington, and gorse (Ulex europaeus), a Class B noxious weed in Washington, look similar to Scotch broom. Spanish broom has round stems and flowers only at stem tips.