woodsorrel, yellow

COMMON NAME: Woodsorrel, yellow
SCIENTIFIC NAME: Oxalis stricta
FAMILY: Oxalidaceae
LIFECYCLE: Perennial
FEATURES: Trifoliate leaves with cordate (heart-shaped) leaflets. Stems with light pubescence with hairs lying
flat on stem. Solitary yellow five petal flowers one to two cm in diameter on singular or multiple
stalks. Fruit is an elongated pod that explosively dehisces when dry.
DESCRIPTION: Difficult to control perennial broadleaf weed common in thin turf. Seems more common in tall
fescue turf than bermudagrass turf. Only found in areas mowed above one inch mowing height.
Common weed of greenhouses and in container nurseries due to the explosively dehiscent seed.
Chemical control can be difficult often requiring multiple applications of multiple herbicide mixtures.

Broad View Infestation in a landscape bed.

Broad View
Infestation in a landscape bed.

Leaf Leaf closeup

Leaf
Leaf closeup

Flower / Seed Head Flower closeup.

Flower / Seed Head
Flower closeup.

Broad View Weed in cool-season turfgrass.

Broad View
Weed in cool-season turfgrass.

Flower / Seed Head Fruit

Flower / Seed Head
Fruit