Douglas County Conservation District
SERVING LANDOWNERS IN DOUGLAS COUNTY COLORADO FOR OVER 56 YEARS
PO BOX 688, 7519A E HWY 86, FRANKTOWN, CO 80116 303-218-2622 DCCDistrict@gmail.com
A perennial with erect stems, often growing 6 to 8' tall, usually associated with moist or marshy sites. Leaves are simple, entire, and opposite or whorled. Lance-shaped leaves have smooth margins. Rose-purple flowers having 5 to 7 petals arranged in long vertical racemes.
This introduced species often escapes to aquatic sites such as streambanks or shorelines of shallow ponds.