It’s a weed: Oxeye daisy

Leader staff

Oxeye daisy is one of two noxious weeds that look like small white daisies. It blooms later in they year, than the other one – scentless chamomile (See July 29 Leader). Any small white daisy growing wild is a noxious weed, as there are no native white daisies.

The oxeye daisy fact sheet says “Stems grow up to one metre tall and are smooth, frequently grooved and sometimes branch near the top, (although more frequently unbranched).

“Leaves progressively decrease in size upward on the stem. Basal and lower leaves are lance-shaped with “toothed” margins and petioles (leaf stalks) that may be as long as the leaves. The upper leaves are alternately arranged, narrow and often clasp the stem with wavy margins.

“Flowers are borne singly at the end of stems and can be up to five cm in diameter, with yellow centers, and 20 to 30 white petals radiating from the center. The petals are slightly notched at the tip.”

Oxeye can be controlled with tilling, pulling (over several years), or chemicals. Mowing can reduce the number of seeds, but can also make the plant grow quicker. See abinvasives.ca for more details. The oxeye daisy is smaller than the domesticated ones in people’s gardens.

Alberta’s Weed Control Act says land owners must control noxious weeds and destroy prohibited noxious weeds.

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