Woolly Hawkweed (Hieracium tomentosum)

Woolly Hawkweed

Hieracium tomentosum

Soft woolly foliage adds muted texture to meadows. Perennial herbaceous wildflower; common name: Woolly Hawkweed.

Full sun
0–1/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dry, low-nutrient growing conditions
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Watering Drought-tolerant; water only during extended, severe dry spells
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Temperature Hardy to cold temperatures; survives mild frosts and hot summer heat
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Characteristics

  • Leaf: Basal rosette of oblong leaves covered in dense white woolly hairs
  • Flower: Bright yellow daisy-like composite heads on slender, hairy stems
  • Stem: Erect, branching stems with sparse woolly pubescence
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Care Guide

Watering

Water occasionally during prolonged dry periods; avoid overwatering

Fertilization

Optional diluted organic feed once in early spring. No regular fertilization required for healthy growth

Eggshell powder top-dressing:Sprinkle a thin layer around the base in early spring; avoid direct contact with foliage to prevent burning
Pruning
  • Deadhead spent flowers to encourage extended blooming period
  • Trim back faded foliage in late autumn to tidy clumps
  • Thin overcrowded clumps every 2–3 years to improve airflow and reduce competition
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No documented toxic effects for humans

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Garden Uses & Culture

Culture: N/A

Usage: Wildflower for pollinator gardens; low-maintenance ornamental for rockeries