Eupatorium colestinum

[ height 2-3 ft., flower blue in autumn, sun to part shade, spreader ]

HARDY AGERATUM  Erect, branching red brown stems that are slightly hairy. Light green leaves are triangularly oval, wide at the base and have coarsely toothed edges. The flowers are a glowing blue to violet, turning purplish, blooming in dense clusters late in the year. Similar in flower to the annual Ageratum, but a taller plant. A must for end-of-the year fresh cut flowers.