This perennial shrub produces lilac-like purple flowers in mid-to-late summer and grows very quickly, sometimes as tall as 10 feet. The green-to-blue gray leaves are narrow and pointed.
The butterfly bush (Buddleja davidii) is native to northwestern China and Japan and poses a great threat to our dryland meadows, open slopes, dunes and reforested sites. You’ll often see infestations along highways, railroad right-of-ways, industrial yards and in riparian areas throughout Western Oregon. The best way to get rid of it is to cut it down and dig out the entire root system.
It’s pretty, but very invasive. Good alternative native plants are:
- Red-flowering current
- Blue blossom
- Mountain mahogany
- Mock orange
- Blue elderberry