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Herbaceous Perennial

Geranium tuberosum

tuberous-rooted cranesbill

A low-growing, tuberous perennial, sending up very finely cut leaves to 20-25cm tall, with a feathery appearance. Leaves are produced in spring, the plant then going dormant after flowering. Flowers are borne on slender, erect stems 40cm tall, in early summer, and are pale pink with reddish veining, 2.5cm across, with deeply notched petals

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1–1.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

West–facing or East–facing or South–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)

Botanical details

Family: Geraniaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
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: Correct
Plant range: Mediterranean

How to grow

Cultivation

Grow in moderately fertile, well-drained soil in full sun or partial shade

Propagation

Propagate by division in spring or propagate by basal softwood cuttings in early to mid spring and root with bottom heat

Suggested planting locations and garden types

Cottage and informal garden
Gravel garden
Wildlife gardens
Flower borders and beds
Ground cover
Underplanting of roses and shrubs

Pruning

No special pruning requirements; spring growth becomes dormant after flowering

Pests

May be damaged by vine weevil larvae, Geranium sawfly larvae, capsid bug, slugs and snails

Diseases

May be susceptible to downy mildews and powdery mildews

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