(aka: Ageratina ligustrina) On a 1994 trip to Northern Mexico, I spotted Eupatorium ligustrina growing in the Sierra Chiquita Mountains at 3,800' elevation. After 18 years in our garden, it remains a favorite for the fall/winter garden. Obviously, we are not the only ones who like it, as it was awarded the prestigious Royal Horticulture Society Award of Garden Merit. Eupatorium ligustrina makes a small evergreen shrub to 5' tall, clothed in thick, dark green, rounded leaves. Starting in early December, the plant is adorned with terminal shaving brush-like, light mauvy-lavender flower heads. If temperatures drop near 0 degrees F, Eupatorium ligustrina may defoliate, but it's never failed to return for us the following spring. In locations with less winter cold, it may reach as high as 10' tall.