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Solitary Clematis Clematis integrifolia

Other Common Name(s):

Phonetic Spelling
KLEM-ah-tiss in-teg-ree-FOH-lee-uh
This plant has high severity poison characteristics.
See below
Description

Clematis integrefolia is a shrubby, non-climbing clematis with an upright, spreading habit. The long-stalked flowers are dainty, urn-shaped and nodding, with four twisted sepals that are blue with dark-purple markings and cream-colored stamens. They will bloom best in sun as the stems tend to be weaker and sprawl more when grown in part shade (and may need staking). The roots should be kept cool and mulched to retain moisture.

Problems:

There are no serious disease or insect problems.  Wilt, powdery mildew, rust, fungal spots, and stem cankers may occur. It may also be subject to scale insects, whiteflies, earwigs, and aphids.

Pruning Group 3: Hard pruning recommended in early spring.

Although no reports of toxicity have been seen for this species, some if not all members of this genus are mildly poisonous. The report on toxicity given below is based on the genus Clematis. The toxic principle is dissipated by heat or by drying.

 

VIDEO Created by Elisabeth Meyer for "Annuals, Perennials, Vines, and Groundcovers" a plant identification course offered in partnership with Longwood Gardens. 

Profile Video:
See this plant in the following landscape:
Cultivars / Varieties:
  • 'Alba'
    Pure white flowers
  • 'Blue Ribbons'
    large, 1.75" indigo blue flowers, up to three times larger than typical
  • 'Hanajina'
    Purple; white; pink flowers
  • 'Rosea'
    violet-rose, bell-shaped flowers are slightly scented and nodding
'Alba', 'Blue Ribbons', 'Hanajina', 'Rosea'
Tags:
#sun#showy flowers#deciduous#poisonous#partial shade#perennial#white flowers#shrub#purple flowers#pink flowers#blue flowers#woody#spring flowers#moist soil#mounding#well-drained soil#vines#summer flowers#dense#lavender flowers#bell shape#rich soil#groundcover#showy seedheads#urn#problem for cats#problem for dogs#problem for horses
 
Cultivars / Varieties:
  • 'Alba'
    Pure white flowers
  • 'Blue Ribbons'
    large, 1.75" indigo blue flowers, up to three times larger than typical
  • 'Hanajina'
    Purple; white; pink flowers
  • 'Rosea'
    violet-rose, bell-shaped flowers are slightly scented and nodding
'Alba', 'Blue Ribbons', 'Hanajina', 'Rosea'
Tags:
#sun#showy flowers#deciduous#poisonous#partial shade#perennial#white flowers#shrub#purple flowers#pink flowers#blue flowers#woody#spring flowers#moist soil#mounding#well-drained soil#vines#summer flowers#dense#lavender flowers#bell shape#rich soil#groundcover#showy seedheads#urn#problem for cats#problem for dogs#problem for horses
  • Attributes:
    Genus:
    Clematis
    Species:
    integrifolia
    Family:
    Ranunculaceae
    Life Cycle:
    Perennial
    Woody
    Recommended Propagation Strategy:
    Division
    Seed
    Stem Cutting
    Country Or Region Of Origin:
    Central Europe to Russia and China
    Wildlife Value:
    Attracts Pollinators, rarely browsed by herbivores
    Dimensions:
    Height: 1 ft. 0 in. - 3 ft. 0 in.
    Width: 2 ft. 0 in. - 3 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Ground Cover
    Herbaceous Perennial
    Shrub
    Vine
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Dense
    Erect
    Mounding
    Prostrate
    Growth Rate:
    Medium
    Maintenance:
    Medium
    Texture:
    Medium
  • 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
    Loam (Silt)
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    12 inches-3 feet
    NC Region:
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    3a, 3b, 4b, 4a, 5a, 5b, 6a, 6b, 7b, 7a
  • Fruit:
    Fruit Color:
    Gray/Silver
    Green
    Fruit Value To Gardener:
    Good Dried
    Showy
    Display/Harvest Time:
    Fall
    Fruit Type:
    Achene
    Fruit Description:
    plumose, ornamentally-attractive, silvery-green seed head
  • Flowers:
    Flower Color:
    Blue
    Pink
    Purple/Lavender
    White
    Flower Inflorescence:
    Head
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Spring
    Summer
    Flower Shape:
    Bell
    Urn
    Flower Petals:
    4-5 petals/rays
    Colored Sepals
    Flower Size:
    1-3 inches
    Flower Description:
    Solitary, nodding, bell-shaped flowers with slightly twisted violet to blue sepals and creamy white anthers.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Feel:
    Smooth
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Elliptical
    Lanceolate
    Ovate
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    Leaves are ovate to oblong, sessile, entire, conspicuously veined and form a dense clump.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Container
    Meadow
    Riparian
    Walkways
    Landscape Theme:
    Asian Garden
    Cottage Garden
    Rock Garden
    Design Feature:
    Border
    Mass Planting
    Attracts:
    Bees
    Butterflies
    Hummingbirds
    Songbirds
    Resistance To Challenges:
    Black Walnut
    Deer
    Rabbits
    Problems:
    Poisonous to Humans
    Problem for Cats
    Problem for Children
    Problem for Dogs
    Problem for Horses
  • Poisonous to Humans:
    Poison Severity:
    High
    Poison Symptoms:
    Clematis can cause severe mouth pain and ulcers if eaten. Toxic to dogs, cats, horses. Clinical signs are salivation, vomiting, diarrhea. In humans, symptoms may include dizziness, confusion, fainting, and convulsions. Fatalities are rare, due to the rapid and intense bitter taste and mouth irritation from eating. Gastric lavage is recommended and anti-inflammatory to soothe irritated tissue. Contact dermatitis results in skin redness and burning sensation for some people, gardening gloves are recommended.
    Poison Toxic Principle:
    protoanemonin
    Causes Contact Dermatitis:
    Yes
    Poison Part:
    Flowers
    Leaves
    Sap/Juice