Plant DetailShow Menu

Oriental False Hawksbeard Youngia japonica

Previously known as:

  • Crepis japonica
  • Japanese Hawksweed
  • P. multiflora
  • Prenanthes japonica
  • Y. thunbergiana
Phonetic Spelling
YOUNG-ee-a juh-PON-ih-kuh
This plant is an invasive species in North Carolina
Description

Hawksbeard, in the Asteraceae (daisy) family, is a weedy summer annual herb that can be found growing as an agricultural or environmental weed, and often persisting year-round. Seedlings form a rosette resembling a small sowthistle (Sonchus spp.) but leaves are hairy. Upper leaves are more linear and lack a stalk, and a milky sap is emitted when leaves are torn. In contrast to dandelion, narrowleaf hawksbeard plants have leaves on the flowering stem, and plants can become highly branched. In the rosette stage (i.e., before the flowering stem has bolted upward), it is much trickier to differentiate between narrowleaf hawksbeard and dandelion.

Inflorescence stalk is generally leafless (but occasionally with up to 3 leaves), branched at the top, and 6 to 15 inches (occasionally to 3 feet) tall. Flowers are yellow, dandelion-like but only about 1/2 inch in diameter. Seed heads are dandelion-like, about 1/4 to 1/2 inches in diameter, and seeds are wind dispersed. Do not let plants go to seed. Hawksbeard appears to be well controlled by available pre-emergence herbicides; however, herbicide efficacy rankings for this species are based on limited experimental data.

The young leaves and young plant can be eaten cooked or raw.  

Attracts the Burnsius butterfly, which is a new genus of the checkered skipper. 

Insects, Diseases, and Other Plant Problems:  This plant is invasive.

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#yellow#invasive#weed#yellow flowers#weedy#winter annual weed
 
Cultivars / Varieties:
Tags:
#yellow#invasive#weed#yellow flowers#weedy#winter annual weed
  • Attributes:
    Genus:
    Youngia
    Species:
    japonica
    Family:
    Asteraceae
    Uses (Ethnobotany):
    Hawksbeard has possible edible and medicinal properties.
    Life Cycle:
    Annual
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Tropical & Subtropical Asia
    Distribution:
    Found throughout the Southeast and Texas, and as far north as Pennsylvania.
    Wildlife Value:
    Attracts Burnsius butterflies.
    Play Value:
    Attracts Pollinators
    Edibility:
    The leaves are edible.
  • Whole Plant Traits:
    Plant Type:
    Annual
    Edible
    Herb
    Weed
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Growth Rate:
    Rapid
    Maintenance:
    Low
  • Cultural Conditions:
    Light:
    Dappled Sunlight (Shade through upper canopy all day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Moist
    Occasionally Wet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    5a, 5b, 6b, 6a, 7b, 7a, 8b, 8a, 9a, 9b, 10b, 10a
  • Fruit:
    Fruit Color:
    White
    Fruit Type:
    Achene
    Fruit Description:
    Dispersed by the wind.
  • Flowers:
    Flower Color:
    Gold/Yellow
    Green
    Orange
    Flower Inflorescence:
    Cyme
    Head
    Flower Value To Gardener:
    Edible
    Flower Bloom Time:
    Fall
    Spring
    Summer
    Flower Petals:
    more than 20 petals/rays
    Flower Size:
    < 1 inch
    Flower Description:
    Branched flowering stem between 1/2 and 3 ft. tall. Flowers are 1/2 in. in diameter with many long, thin petals. The inflorescence is composed of both disc and ray flowers. The flowers are bright yellow and may be tipped with dark brown to black.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Broadleaf Evergreen
    Leaf Color:
    Green
    Leaf Value To Gardener:
    Edible
    Leaf Type:
    Simple
    Leaf Arrangement:
    Rosulate
    Leaf Shape:
    Spatulate
    Leaf Margin:
    Lobed
    Hairs Present:
    Yes
    Leaf Length:
    3-6 inches
    Leaf Width:
    1-3 inches
    Leaf Description:
    Rosette of light green, hairy leaves, upper leaves linear and lacking a stalk. Leaves are sometimes present on flowering stems. Emits a white, milky sap when damaged.
  • Stem:
    Stem Is Aromatic:
    No
    Stem Form:
    Straight
  • Landscape:
    Landscape Location:
    Lawn
    Attracts:
    Butterflies
    Pollinators
    Problems:
    Invasive Species
    Weedy