This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
Introduced. Perennial. Propagates by seeds and by stolons.
Time of bloom: June to August.
Seed-time: July to September.
Range: Eastern Quebec to southern New York.
Habitat: Fields, meadows, roadsides, and waste places.
Not many years have passed since this immigrant from Europe landed in this country; its range is not as yet very extensive and it is to be hoped that it may not increase fast or far. Cattle refuse to eat the plant because of its bristly foliage and nauseous, bitter juices.
Stems one to two feet tall, slender, bristly hairy, with two or three small leaves near the base, and branching at the top into a loose, open flower-cluster. Basal leaves tufted, narrowly oblong to lance-shaped, tapering backward to margined petioles, light green, entire, bristly hairy on both sides. Stolons few, lacking on many plants. Heads yellow, about three-quarters of an inch broad, on glandular, hairy pedicels; bracts of the involucre nearly linear, pointed, blackish, sticky-hairy. Achenes brown, oblong, with lengthwise ridges; pappus a ring of fine, plumose bristles arranged funnel shape. (Fig. 385.)
Fig. 385.- Field Hawkweed (Hie-racium pratense). X 1/6.
Means of control the same as for Orange Hawkweed.