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Humulus scandens

Common Name(s):

Previously known as:

  • Humulus japonicus Siebold & Zucc.
This plant has low severity poison characteristics.
See below
Description

The Japanese Hop is an annual, climbing or twining vine in the hemp family. It is native to eastern Asia. The leaves are opposite, mostly 5-lobed with a rough texture. Flowers are greenish, appearing in mid-summer to fall. There are separate male and female vines. Both produce small, five-petaled flowers. Male flowers occur in airy clusters, while female flowers are in short spikes. Fruits appear in elongated clusters, enclosed in a papery sac-like bract.

This drought-tolerant plant has escaped cultivation in many areas where it may displace desirable species. For this reason, planting Japanese Hop is not recommended.

 

Cultivars:
  • 'Lutescens'
  • 'Variegatus'
Tags:
#deciduous#invasive#drought tolerant#vine
Cultivars:
  • 'Lutescens'
  • 'Variegatus'
Tags:
#deciduous#invasive#drought tolerant#vine
  • Attributes:
    Genus:
    Humulus
    Species:
    scandens
    Family:
    Cannabaceae
    Life Cycle:
    Annual
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Eastern Asia
    Distribution:
    Most infestations are in eastern states, but the species is spreading in the Midwest.
    Climbing Method:
    Twining
  • Whole Plant Traits:
    Plant Type:
    Annual
    Vine
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Creeping
    Growth Rate:
    Rapid
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Soil Texture:
    Loam (Silt)
    Soil Drainage:
    Good Drainage
    Occasionally Wet
    NC Region:
    Coastal
    Piedmont
  • Fruit:
    Fruit Color:
    Gold/Yellow
    Green
    Fruit Description:
    Elongated cluster, each small, dry, enclosed in a sac-like, papery bract
  • Flowers:
    Flower Color:
    Gold/Yellow
    Green
    Flower Bloom Time:
    Fall
    Summer
    Flower Petals:
    4-5 petals/rays
    Flower Description:
    Greenish flowers in mid-summer to fall; small, axillary, 5-parted. female vines produce green hops
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Feel:
    Rough
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Cordate
    Leaf Margin:
    Lobed
    Hairs Present:
    Yes
    Leaf Length:
    3-6 inches
    Leaf Description:
    Mostly opposite, palmately 3-7-veined and -lobed
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Naturalized Area
    Woodland
    Resistance To Challenges:
    Drought
    Problems:
    Contact Dermatitis
    Weedy
  • Poison:
    Poison Severity:
    Low
    Poison Symptoms:
    SKIN IRRITATION MINOR, OR LASTING ONLY FOR A FEW MINUTES. Skin irritation with blisters upon contact.
    Poison Toxic Principle:
    Volatile oils and bitter acids
    Causes Contact Dermatitis:
    Yes
    Poison Part:
    Flowers
    Leaves