Pinguicula grandiflora

RHS Plant Profile

large-flowered butterwort

Other common names

Irish butterwort

Bogs

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An insectivorous perennial producing rosettes of sticky, pale green leaves. In summer, trumpet-shaped, spurred, dark blue flowers 2.5cm across, with pale throats and widely spreading lobes, are produced on slender stems

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0-0.1 metre

Size

Time to Maturity: 2–5 years
Max Spread: 0-0.1 metre
Max Height: 0.1-0.5 metres

Growing Conditions

Loam

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

Position

Full sun Partial shade

Aspect: South–facing or North–facing or West–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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Lentibulariaceae
Native to GB/Ireland: Yes
Foliage: Deciduous
Habit: Matforming
Genus: Pinguicula are a genus of around 80 species of, mainly perennial, flowering carnivorous plants with sticky leaves which attract and digest insects. Leaves are succulent-like and flowers mainly blue, violet or white
Name Status: Correct
Plant Range: Ireland,France,Spain,Switzerland

How to Grow

Cultivation

Under glass, grow in a peat-free carnivorous plant mix, in bright, filtered light. Outdoors, grow in full sun or part shade in poor, permanently moist soil that is naturally peaty, or in a bog garden using low-nutrient specialist compost formulated for carnivorous plants. See carnivorous plant cultivation

Propagation

Propagate by seed sown as soon as ripe on the surface of damp sphagnum moss with gentle heat, or separate resting buds in late winter

Suggested planting locations and garden types

Patio and container plants

Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free