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Herbaceous PerennialShrubs

Clematis urticifolia

A woody-based, perennial clematis to 2m tall with dark green leaves divided into three toothed leaflets. Fragrant, urn-shaped, pale blue flowers that are darker on the inside and with recurved petal tipsare borne on erect stems from late summer into autumn

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Ultimate height

1.5–2.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1–1.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

South–facing or East–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Ranunculaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Skin irritant. Wear gloves and other protective equipment when handling. Pets (rabbits): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Clematis can be deciduous or evergreen shrubs or herbaceous perennials, mostly climbing by twining leaf-stalks, and often with showy flowers. Some have attractive fluffy seedheads in autumn
Name status: Correct
Plant range: South Korea

How to grow

Cultivation

Plant in a moisture-retentive, well-drained soil, with the roots and base of the plant kept cool and shaded by other plants or with a layer of pebbles at the base. Plant with the crown of the clematis level with the soil. Ideal for growing through plants in the herbaceous border. See clematis cultivation for further advice.

Propagation

Propagate by layering or semi-hardwood cuttings. Propagate by seed as soon as ripe in containers in a cold frame

Suggested planting locations and garden types

Patio and container plants
City and courtyard gardens
Cottage and informal garden
Flower borders and beds
Wall side borders

Pruning

Pruning (clematis) group 3. Cut back to the base in early spring

Pests

May be susceptible to aphids, snails and caterpillars; petals may be eaten by earwigs

Diseases

May be susceptible to honey fungus (rarely), clematis wilt and clematis slime flux

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