REPORT

Invasive Plant Details

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Whiplash Hawkweed

Latin Name: Hieracium flagellare

Priority Ranking: High Priority

Identification

Flower: Yellow, dandelion-like flower heads that bloom from late spring to early summer.

Leaves: Basal rosettes of narrow, hairy, dark green leaves.

Stems: Erect, slender, and hairy, growing up to 30 cm tall.

Growing Environment: Prefers well-drained soils in meadows, fields, rangelands and disturbed areas.

Growth Habit: A perennial herb that spreads by seeds and creeping stolons, forming dense mats. It often creates low, sprawling patches of yellow flowers in grassy habitats. In situ, whiplash hawkweed appears as low-growing mats of bright yellow flowers in meadows and fields.

Priority Ranking: High Priority

Impacts on Environment

Impacts: Moderately invasive. It can form dense mats that outcompete native vegetation.