Geranium × magnificum 'Blue Blood'

RHS Plant Profile

cranesbill 'Blue Blood'

Synonyms

Geranium maculatum 'Blue Blood'
Geranium 'Blue Blood'
Geranium ibericum 'Blue Blood'

Herbaceous Perennial

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A compact, mound-forming herbaceous perennial producing a dome of green, divided foliage on stems to 35cm (14in) high. In late spring and summer, masses of purplish-blue, saucer-shaped single flowers, with darker red-purple veins are produced above the foliage.

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: South–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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Geraniaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers
Name Status: Accepted

How to Grow

Cultivation

Grows best in well-drained soil and a position in full sun or partial shade

Propagation

Propagate by basal cuttings or division in spring

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Gravel garden
Patio and container plants
Wildlife gardens
Banks and slopes
Flower borders and beds

Pruning

Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers

Pests

May be susceptible to vine weevil, capsid bug and sawflies

Diseases

May be susceptible to downy mildews and powdery mildews