Orange hawkweed, Hieracium aurantiacum

Life Cycle

Perennial.

Propagation

Reproducing by seed and by leafy stolons (runners).

Stems

Erect stems, hairy with scattered, long, stiff, often blackish hairs.

Leaves

Leaves in rosette, hairs on both surfaces.

Flowers and Fruit

Bright, showy, orange-red to deep dark reddish-orange flower heads. Flowers from June to September. Flowerhead in a compact, flat-topped cluster.

Roots and Underground Structures

It has short, leafy stolons (runners), and a compact inflorescence.

Habitat

Orange hawkweed occurs throughout Ontario in pastures, meadows, edges of woods, roadsides and waste places in deep, rich soils as well as shallow, sandy or gravelly soils.

Distinguishing Features

It is readily distinguished by its showy orange-red to dark reddish-orange flower heads.

Often Mistaken For

It is very similar to Yellow hawkweed.


Figure #1.

A and B: Orange Hawkweed. A. Lower portion of plant. B. Flowering stem.


Figure #2.

Orange hawkweed growing on lawn in Southern Ontario in late August (note hairy leaves and stem).


Figure #3.

Orange hawkweed flowers.


Figure #4.

Deep dark reddish-orange flower head of orange hawkweed.


Figure #5.

(Central Ontario, late June).


Figure #6.

Hairy rosette leaves.