Campanula isophylla

RHS Plant Profile

Italian bellflower

Dorling Kindersley 2003

Other common names

falling stars, Ligurian harebell, star bellflower, Jerusalem star, star of Bethlehem

Synonyms

Campanula floribunda

Herbaceous Perennial Conservatory Greenhouse

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A trailing perennial to 20cm in height, with soft stems bearing small, heart-shaped pale green leaves and upright saucer-shaped, light blue or white flowers 3.5cm across in summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: North–facing or West–facing or South–facing or East–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): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Campanulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Trailing
Genus: Campanula may be annuals, herbaceous or evergreen perennials, with bell or star-shaped, often blue, flowers in late spring or summer
Name Status: Correct
Plant Range: N Italy

How to Grow

Cultivation

A tender perennial and so ideal for a hanging basket or a container that is kept outside in summer and brought undercover when frosts are likely. Apply a balanced liquid feed every month during growing season; in winter keep compost moist. In frost-free a

Propagation

Propagate by softwood cuttings taken in early spring, root with bottom heat

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Mediterranean climate plants
City and courtyard gardens
Hanging Basket
Coastal
Sub-tropical
Conservatory and greenhouse

Pruning

Cut dead stems to the base before winter

Pests

Damaged by slugs and snails outdoors, also aphids, vine weevil and glasshouse red spider mite under glass

Diseases

May be susceptible to a rust, powdery mildews and a leaf spot