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Geranium Johnsons blue

Geranium Johnson's blue
Cranesbill, Storksbill, Hardy Geranium

60 reviews
4,4/5
50 reviews
7 reviews
6 reviews
2 reviews
3 reviews

An intense blue that leans towards indigo! It's my favourite geranium. In autumn, it adorns itself with a splendid foliage!

michele, 12/05/2023

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This plant carries a 12 months recovery warranty

More information

Geranium Johnson's Blue, a perennial groundcover with light blue flowers tinged with violet.
Flower size
4 cm
Height at maturity
50 cm
Spread at maturity
50 cm
Exposure
Sun
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March to April, September
Recommended planting time February to April, September to November
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Flowering time May to August
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Description

Geranium Johnson's Blue is a perennial plant resulting from the cross-breeding of the Himalayan Geranium and the Meadow Geranium. This exceptional groundcover blooms abundantly and for a long time.  Quickly becoming popular since its introduction in 1950, it blooms from May to July. Its large cup-shaped flowers are a light blue tinged with violet and a white centre. This geranium grows quite quickly, reaching a height of 40 cm (16in).

This sterile plant has impressive deciduous foliage which is its main asset. Its green colour turns towards orange and red in autumn. The leaves are deeply cut and lobed.

Also known as Cranesbill, Geranium Johnson's Blue can be used as a border plant but also at the base of modern roses, especially pastel-coloured roses. It is also suitable for natural gardens, understorey planting, rockeries, and coastal areas. It can be cultivated in pots on patios. This geranium is very hardy and tolerates summer heat quite well. It received an RHS Award of Garden Merit in 1993.

Geranium Johnsons blue in pictures

Geranium Johnsons blue (Flowering) Flowering
Geranium Johnsons blue (Foliage) Foliage
Geranium Johnsons blue (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time May to August
Flower size 4 cm

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 50 cm
Spread at maturity 50 cm
Growth rate normal

Botanical data

Genus

Geranium

Cultivar

Johnson's blue

Family

Geraniaceae

Other common names

Cranesbill, Storksbill, Hardy Geranium

Origin

Cultivar or hybrid

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Planting and care

Place the perennial Geranium Johnson's Blue in sun or partial shade in spring and autumn. Plant it in well-drained soil, preferably moist, but it an undemanding plant. Easy to grow, remove faded flowers and leaves to encourage new shoots to grow.

Planting period

Best planting time March to April, September
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Edge of border, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun
Soil pH Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light)
Soil moisture Moist soil

Care

Pruning instructions After flowering, it is wise to cut back the stems and leaves to ground level in order to prevent excessive self-seeding and to encourage new foliage and promote a second flowering.
Pruning Pruning recommended once a year
Pruning time July to August
Overwinter Can be left in the ground
4,4/5

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