Campanula [Blue Octopus] ('Jls0504m')

Synonyms

Campanula 'Jls0504m'

Herbaceous Perennial

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A hardy, easy-to-grow herbaceous perennial known for its unusual, tentacle-like petals that curl and twist, creating a dramatic starburst effect. Blooming in summer, its vivid blue flowers contrast beautifully with the green foliage. Ideal for borders, containers, or rock gardens. Adds a bold, architectural touch to any garden display

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: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–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): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Campanulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming, Columnar upright
Genus: Campanula may be annuals, herbaceous or evergreen perennials, with bell or star-shaped, often blue, flowers in late spring or summer
Name Status: Trade

How to Grow

Cultivation

Grow in moist but well-drained soil in sun or partial shade. Does not tolerate wet winter conditions. Well-suited for rock gardens, sunny walls or banks, and sunny borders

Propagation

Propagate by dvision in spring or early autumn, basal cuttings in spring, or sow seeds in spring

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Gravel garden
Patio and container plants
Rock garden
Garden edging
Underplanting of roses and shrubs
Wall side borders

Pruning

No pruning required. deadhead spent flowers to prolong flowering. After flowering trim back straggly stems to keep the plant neat and compact

Pests

May be susceptible to slugs and snails, especially on young growth. aphids may appear but rarely cause serious harm

Diseases

May be susceptible to root rot if soil is poorly drained. Powdery mildews are uncommon but possible in humid conditions