Rough hawkweed (Hieracium scabrum)

Rough hawkweed

Rough hawkweed (Hieracium scabrum) is related to dandelions. It is found across the central United States and Canada. It prefers dry conditions in loamy, sandy, or gravely soils. Rough hawkweed grows up to 60 cm tall and has a rough, hairy surface. A variety has been introduced in Europe which has developed basal rosette leaves rather than the stem-mounted ones of the native plants.

Scientific classification

Species

Rough hawkweed (Hieracium scabrum)

Asters bellflowers fanflowers and allies

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30 cm to 91 cm

Plant Height

Green, Blue

Leaf Color

1.3 cm to 1.9 cm

Flower Size

Yellow

Flower Color

Red, Burgundy

Stem Color

Deciduous

Leaf type

5 - 25 ℃

Ideal Temperature

Images of Rough hawkweed

Quickly Identify Rough hawkweed

Leaves are lance-shaped, bristled, and clasp the stem, with a milky latex.

Flowers are daisy-like with yellow ray florets in flat-topped clusters.

Fruits are dark brown achenes with fine bristles for wind dispersal.

Stem is light green, unbranched, with milky latex and rough texture.

Plant reaches 1-2 feet (30-60 cm) in height with red-tinged stems.

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Care Guide for Rough hawkweed

Every week

Water

Full sun

Sunlight

5 - 25 ℃

Ideal Temperature

Water: Rough hawkweed thrives in a native environment with a weekly watering schedule, showing moderate drought tolerance. It requires consistent moisture without waterlogging and flourishes outdoors, benefiting from natural rainfall, which supports its robust growth cycle.

Fertilize: Fertilize rough hawkweed monthly with a balanced nutrition fertilizer during the growing season, reducing in fall and stopping in winter. Water the soil before application to prevent harm. Adjust fertilization based on the plant's response, observing any signs of stress or excessive growth.

Pruning: Rough hawkweed features coarse leaves and bright yellow flowers. Prune in early to late spring by cutting back old stems and removing spent flower heads to promote growth and prevent invasiveness. Use clean tools to maintain plant health.

Propagation: Rough hawkweed is a perennial that flourishes in well-drained soil and can be propagated by sowing. For successful germination, seeds should be surface sown in a moisture-retentive, aerated mix and kept warm with indirect light. Maintain humidity with a thin soil layer, noting that germination may take weeks.

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Learn More About Rough hawkweed

Sunlight Requirements

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