Hieracium umbellatum

Hieracium umbellatum, commonly known as umbellate hawkweed, is a perennial herbaceous plant in the Asteraceae family. Originally native to Europe and Asia, it has been introduced to North America and other parts of the world. The plant can grow up to 60 cm tall and features a basal rosette of lance-shaped leaves with toothed edges. The hairy stem supports clusters of small yellow flowers at its top. Umbellate hawkweed thrives in moist soils in open areas such as meadows, pastures, and roadsides. It blooms from June to August, attracting bees and other pollinators with its bright yellow flowers. Historically, the plant has been used for medicinal purposes due to its anti-inflammatory properties, making it useful for treating wounds, bruises, and sprains. However, caution is advised as it contains pyrrolizidine alkaloids, which can be toxic if ingested in large amounts. In regions where Hieracium umbellatum has been introduced outside its native range, such as North America and New Zealand, it can become invasive. Its ability to spread rapidly through seeds or vegetative reproduction by stolons or rhizomes makes it a potential threat to local ecosystems. Overall, Hieracium umbellatum is an interesting and attractive perennial herb. While it can add beauty when grown ornamentally, it should be monitored closely outside of its native range to prevent invasive behavior.

Characteristics

Plant Type

Herb

Life Cycle

Perennial

Genus

Hieracium

Family

Asteraceae

Hardiness Zone

5-9

Mature Height

30 cm to 91 cm

Mature Spread

15 cm

Leaf Color

Green, Dark Green

Leaf Type

Semi-evergreen

Flower Color

Yellow

Flower Size

1.78 cm to 3.81 cm

Bloom Time

Early summer, Mid summer

Planting Time

Spring, Autumn

Harvest Time

Mid summer

Tags (7)

Common Names (13)