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Cow-itch Campsis radicans

Other Common Name(s):

Phonetic Spelling
KAMP-sis RAD-ih-kans
This plant has low severity poison characteristics.
See below
Description

Campsis radicans is a dense, vigorous, multi-stemmed, deciduous, woody, clinging vine that attaches itself to structures and climbs by aerial rootlets. It is native to the southeastern U. S. but has naturalized in many northern states.

Trumpet vine is also commonly known as cow-itch vine because some people experience skin redness and itching after coming in contact with the leaves.

It is easily grown in a wide variety of soils. It is best planted in lean-to average soils with regular moisture in full sun to part shade. Foliage grows well in shade, but plants need good sun for best flowering. It blooms on new growth, so early spring pruning will not affect the flowering. Vines must be grown on sturdy structures because mature plants produce considerable weight. The problem with species plants (Campsis radicans) is usually not how to grow them but how to restrain them, in large part because they sucker profusely from underground runners and freely self-seed, often forming impenetrable colonies in the wild which can choke out many plants that get in their way.

CAUSES ONLY LOW TOXICITY IF EATEN. SKIN IRRITATION MINOR OR LASTING ONLY FOR A FEW MINUTES.  

Fire Risk: This plant has an extreme flammability rating and should not be planted within the defensible space of your home.  Select plants with a low flammability rating for the sites nearest your home. 

Cultivars / Varieties:
  • 'Atropurpurea'
  • 'Crimson Trumpet'
  • 'Flava'
  • 'Minor'
  • 'Praecox'
  • 'Spec'
Tags:
#hummingbirds#showy flowers#deciduous#birds#wildlife plant#apvg#cpp#fire#extreme flammability#NC native#native vine#hummingbird
 
Cultivars / Varieties:
  • 'Atropurpurea'
  • 'Crimson Trumpet'
  • 'Flava'
  • 'Minor'
  • 'Praecox'
  • 'Spec'
Tags:
#hummingbirds#showy flowers#deciduous#birds#wildlife plant#apvg#cpp#fire#extreme flammability#NC native#native vine#hummingbird
  • Attributes:
    Genus:
    Campsis
    Species:
    radicans
    Family:
    Bignoniacea
    Life Cycle:
    Woody
    Recommended Propagation Strategy:
    Root Cutting
    Seed
    Country Or Region Of Origin:
    Central & E. U.S.A
    Fire Risk Rating:
    extreme flammability
    Wildlife Value:
    The flowers are attractive to hummingbirds which are the principal pollinator of this plant. White-tailed deer and rabbits eat the foliage.
    Play Value:
    Wildlife Food Source
    Particularly Resistant To (Insects/Diseases/Other Problems):
    Moderately resistant to deer.
    Climbing Method:
    Clinging
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Poisonous
    Vine
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Climbing
    Dense
    Multi-stemmed
    Spreading
    Growth Rate:
    Rapid
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    High Organic Matter
    Sand
    Soil Drainage:
    Moist
    Occasionally Dry
    NC Region:
    Coastal
    Mountains
    Piedmont
    Usda Plant Hardiness Zone:
    4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Brown/Copper
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Length:
    > 3 inches
    Fruit Width:
    < 1 inch
    Fruit Description:
    long, bean-like seed capsules (3-5” long) which split open when ripe releasing numerous 2-winged seeds for dispersal by the wind
  • Flowers:
    Flower Color:
    Gold/Yellow
    Orange
    Flower Inflorescence:
    Cyme
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Summer
    Flower Shape:
    Trumpet
    Tubular
    Flower Size:
    1-3 inches
    Flower Description:
    The Trumpet creeper has clusters (terminal cymes) of red trumpet-shaped flowers (to 3” long) that appear throughout the summer (June to September). Its flowers are very attractive to hummingbirds.
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Deciduous Leaf Fall Color:
    Gold/Yellow
    Leaf Type:
    Compound (Pinnately , Bipinnately, Palmately)
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Elliptical
    Oblong
    Leaf Margin:
    Serrate
    Hairs Present:
    No
    Leaf Length:
    > 6 inches
    Leaf Width:
    > 6 inches
    Leaf Description:
    Its compound, odd-pinnate leaves (to 15” long) are shiny dark green above and glabrous dull green below. Each leaf has 7 to 11 elliptic to oblong leaflets (to 4" long) with serrated margins. The leaves turn yellow in the fall.
  • Bark:
    Bark Color:
    Light Brown
    Bark Description:
    pale brown and scaly
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Naturalized Area
    Landscape Theme:
    Native Garden
    Pollinator Garden
    Attracts:
    Hummingbirds
    Songbirds
    Resistance To Challenges:
    Deer
    Problems:
    Contact Dermatitis
    Weedy
  • Poisonous to Humans:
    Poison Severity:
    Low
    Poison Symptoms:
    Skin irritation with redness and swelling
    Poison Toxic Principle:
    Unidentified
    Causes Contact Dermatitis:
    Yes
    Poison Part:
    Flowers
    Leaves