Composite or aster (Asteraceae family):
Leucanthemum vulgare Lam.
EPPO code:
CHYLE
Other names:
Field daisy, white daisy, whiteweed, poorland flower, marguerite.

Species information

Lifecycle:
Perennial.
Propagation:
Reproduces by seed and underground rhizomes.
Emergence:
Seedlings emerge in early spring but also in the fall.
Habitat:
Ox-eye daisy is commonly found in waste areas, meadows, pastures and lawns, but can be found in cultivated fields, usually on heavier textured soils.

Identification clues

Leaves

Cotyledons:
Oval and narrowing into a short petiole.
Young leaves:
The first seedling leaves of ox-eye daisy are spoon-shaped and lobed with shallow wavy teeth. At first, they are opposite, but they then alternate and produce a basal rosette.
Mature leaves:
Basal rosette leaves are smooth, hairless, spoon shaped, lobed and wavy toothed. Stem leaves are alternate and more sharply toothed.

Mature plant

Stem:
The stem of ox-eye daisy is erect and grows between 20 and 90 cm tall.
Flowers:
Its flower heads (inflorescences) are daisy-like with yellow centers (disk florets) and 20–30 white, petal-looking ray florets. The flowerhead is 2.5–5 cm in diameter.
Root:
Ox-eye daisy has shallow fibrous roots with short rhizomes that hold soil quite efficiently.

Often mistaken for

I know it's not Scentless chamomile because although the flower heads appear similar, ox-eye daisy’s inflorescence will have 20–30 white ray florets. While scentless chamomile has 10–20 ray florets. The leaves of each plant are drastically different; scentless chamomile’s are finely divided, while the leaves of ox-eye daisy are entire or broadly divided.

The daisy-like flower with yellow center and 20–30 white ray florets
The daisy-like flower with yellow center and 20–30 white ray florets.
An established perennial plant in winter wheat during late May
An established perennial plant in winter wheat during late May.
The lobed leaves with shallow toothed margins
The lobed leaves with shallow toothed margins.
The dense fibrous root system with short rhizomes that tightly hold soil
The dense fibrous root system with short rhizomes that tightly hold soil.