Pennsylvania smartweed is a summer annual. The stems are smooth, reddish purple with swollen nodes, with alternating leaves. The leaves are lanceolate with a red watermark. The growth habit is erect with multiple branching. The flowers of Pennsylvania smartweed are bright pink and bloom from July to October. The individual flowers are small and form dense spike-like clusters on hairy stems. Pennsylvania smartweed is found throughout the United States.
Weed Photos: Courtesy of Dr. Lambert McCarty. Clemson University. Clemson, SC.
Make your post-emergence herbicide application to Pennsylvania smartweed that is actively growing and in the seedling to flower stage of growth.
Pronto Vegetation Killer
PowerZone® Broadleaf Herbicide
Q4® Plus Turf Herbicide for Grassy & Broadleaf Weeds
SpeedZone® Broadleaf Herbicide for Turf
SpeedZone® Southern Broadleaf Herbicide for Turf
SpeedZone® Southern EW Broadleaf Herbicide for Turf
Super Trimec® Broadleaf Herbicide
Surge® Broadleaf Herbicide for Turf
Trimec® 1000 Low Odor Broadleaf Herbicide
Trimec® 992 Broadleaf Herbicide
Trimec® Bentgrass Formula Broadleaf Herbicide
Trimec® Classic Broadleaf Herbicide
Trimec® Encore® Broadleaf Herbicide
Trimec® Southern Broadleaf Herbicide for Sensitive Southern Grasses
TZone SE Broadleaf Herbicide for Tough Weeds