Pineappleweed is a summer annual. When the plant is crushed, it has the odor of a pineapple. The hairless leaves are divided into very narrow segments, and are arranged alternately on the stems originating from a taproot. The plant has a bushy growth habit resulting from branching from lower stems. Flowers which are yellow in color are produced from May through August. One to several flowers are produced at the end of short stems. Pineappleweed spreads by seed. Pineappleweed originated in the west, but is now found throughout the United States.
Weed Photos: Courtesy of Dr. Lambert McCarty. Clemson University. Clemson, SC.
Being a summer annual, a pre-emergence herbicide application may prevent pineappleweed from germinating. Make your post-emergence herbicide application to pineappleweed that is actively growing and in the rosette to flower stage of growth.
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