Hieracium umbellatum — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Hieracium umbellatum

Hieracium Umbellatum

Updated · 1,585 observations
ON THIS PLANT

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

Botanical profile.

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
ALSO KNOWN AS

Other names.

en Narrow-leaf hawkweed en Northern hawkweed en Narrowleaf hawkweed en Hawkweed en Canadian Hawkweed en Kalm's Hawkweed en Smooth Hawkweed en Umbellate Hawkweed en Canada Hawkweed en Narrow-leaved Hawkweed en Leafy hawkweed en Épèrvières en Høgeurt
PLATES
Hieracium umbellatum leaf
PLATE 01 · leaf
Hieracium umbellatum leaf
PLATE 02 · leaf
Hieracium umbellatum flower
PLATE 03 · flower
Hieracium umbellatum flower
PLATE 04 · flower
Hieracium umbellatum fruit
PLATE 05 · fruit
Hieracium umbellatum fruit
PLATE 06 · fruit
ALSO IN THE LIBRARY

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