Broadleaf plantain

Broadleaf plantain is a low-growing perennial broadleaf weed that forms a flat rosette of broad, oval to egg-shaped, dark-green leaves pressed close to the ground. The leaves are somewhat waxy and bear several prominent, nearly parallel veins running lengthwise; the leaf stalk is broad and often reddish at the base. From the center of the rosette rise leafless flower stalks topped with slender, rat-tail-like spikes of tiny flowers and seeds along the upper half. It grows from a short, mostly fibrous root system. Its broad, oval, strongly veined leaves separate it from the narrow-leaved buckhorn plantain, which has long, slender leaves.

The flat rosettes of broadleaf plantain press down desirable grass and create coarse, broad-leaved patches that interrupt the smooth texture of a lawn, while the numerous rat-tail seed stalks rise above the canopy and look untidy between mowings. By occupying compacted and worn areas and shading out the grass beneath its broad leaves, it thins the surrounding stand and leaves bare or weakened spots when the rosettes are removed, degrading both the density and uniformity of the turf.

Broadleaf plantain is a perennial that overwinters as a rosette and regrows from its crown each year, reproducing primarily by seed. Its main growth period runs from about June through September, when it flowers and produces enormous quantities of seed, with a single plant capable of producing many thousands of seeds that can remain viable in the soil for decades. This combination of perennial persistence and a long-lived, prolific seed bank makes it a durable, recurring lawn weed.

Broadleaf plantain thrives in compacted, heavily trafficked, and moist soils, and it readily colonizes thin, worn, or closely mowed turf where its ground-hugging rosette can spread without competition. It tolerates a range of conditions but is especially favored along paths, high-traffic lanes, and compacted areas where desirable grass struggles. Thin turf, compaction, and disturbance are the situations in which it most aggressively establishes and persists.