Campanula latiloba 'Percy Piper'

RHS Plant Profile

great bellflower 'Percy Piper'

RHS 2001

Synonyms

Campanula persicifolia subsp. sessiliflora 'Percy Piper'

Herbaceous Perennial

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A semi-evergreen perennial to 75cm, forming a rosette of bright, glossy green leaves. Erect stems with narrow leaves bear sessile, rich lavender-purple, bowl-shaped flowers in the upper leaf axils

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Loam Sand

Moisture: Moist but well–drained
pH: Alkaline or Neutral

Position

Full sun Partial shade

Aspect: West–facing or East–facing or South–facing or North–facing
Exposure: 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: Semi evergreen
Habit: Clump forming
Genus: Campanula may be annuals, herbaceous or evergreen perennials, with bell or star-shaped, often blue, flowers in late spring or summer
Name Status: Accepted

How to Grow

Cultivation

Flower colours are best preserved in partial shade. Cut back after flowering to prevent self-seeding and encourage a second flush of flowers

Propagation

Propagate by seed or division in spring or autumn

Suggested planting locations and garden types

Patio and container plants
City and courtyard gardens
Coastal
Cottage and informal garden
Wildlife gardens
Flower borders and beds
Cut flowers

Pruning

Cut dead stems to the base before winter

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to powdery mildews