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Geranium sylvaticum Birch Lilac

Geranium sylvaticum Birch Lilac
Wood Cranesbill, Woodland Geranium

5,0/5
10 reviews
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Bought just 3 months ago in flower and is growing very well.

Murielle, 24/05/2023

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This plant carries a 12 months recovery warranty

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Value-for-money
This large perennial geranium is found in the damp shade of the undergrowth. It is a lush herbaceous perennial, deciduous, a small spreading shrub, which is brightened by an abundant spring and summer flowering of lilac-blue with a white heart. Resembling the meadow cranesbill, it is distinguished by its slightly less cut foliage. Ideal in cool and shaded areas of the garden, in the natural garden, it is not afraid of the harsh winter cold, and can tolerate heavy and damp soils.
Flower size
2 cm
Height at maturity
40 cm
Spread at maturity
30 cm
Exposure
Sun, Partial shade, Shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March to April, September to October
Recommended planting time February to April, September to November
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Flowering time May to June
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Description

The Geranium sylvaticum 'Birch Lilac', also known as Wood Cranesbill, is adapted to the damp shade of the undergrowth. It is a lush deciduous herbaceous perennial, a large spreading bush, which is adorned with abundant lilac-blue flowers with white centers in spring and summer. Resembling the meadow cranesbill, it differs from it by its slightly less dissected foliage. Ideal in cool and shady areas of the garden, in natural gardens, it is not afraid of the harsh winter cold and thrives in heavy and moist soils. This simple and grand plant will find its place in any garden.

 

Geranium sylvaticum 'Birch Lilac' belongs to the Geraniaceae family. It is a selection of the Wood Cranesbill, native to Europe, where it grows in undergrowth and damp meadows. This large herbaceous perennial, very hardy, forms a bushy and spreading mass of 40 cm (16in) when in bloom, with a spread of 30 cm (12in). Its growth is quite fast. It blooms in summer, from May to July, with open trumpet-shaped flowers, in a fresh and bright color, between blue and pink, illuminated by white in the center. The flowers, 2 to 3 cm (1in) in diameter, are grouped in compact cymes. The anthers are dark blue, the pistil is pink. Its basal leaves are compound with 7 lobes, deeply dissected and dentate, carried by ramified stems. The foliage is deciduous. The plant is pubescent, glandular at the top, and shows a thick and oblique stump.

 

Perennial and vigorous, this variety thrives in shade, it enjoys coolness and self-seeds spontaneously in humus-rich soils, forming magnificent colonies that are spectacular in the undergrowth in spring. Beautiful in the undergrowth, combine it with golden foliage; Millium effusum 'Aureum', Carex elata 'Aurea', Carex oshimensis 'Evergold', the yellow-blue contrast is, as usual, superb.

 

 

 

Geranium sylvaticum Birch Lilac in pictures

Geranium sylvaticum Birch Lilac (Flowering) Flowering
Geranium sylvaticum Birch Lilac (Foliage) Foliage

Flowering

Flower colour blue
Flowering time May to June
Inflorescence Cyme
Flower size 2 cm

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 40 cm
Spread at maturity 30 cm
Growth rate normal

Botanical data

Genus

Geranium

Species

sylvaticum

Cultivar

Birch Lilac

Family

Geraniaceae

Other common names

Wood Cranesbill, Woodland Geranium

Origin

Cultivar or hybrid

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Planting and care

Place the perennial Geranium sylvaticum 'Birch Lilac' in partial shade or shade of bushes and trees, in a moist, even damp, but well-draining soil. Be careful not to expose it to too much sunlight, especially in the south. To plant your young plant, work the soil in a 20 cm (8in) cube, crumbling the soil well and placing a bottom amendment such as dried blood or dehydrated horn in the planting hole. Position your plant, removed from its pot, covering the top of the root ball with 3 cm (1in) of soil, fill in and water thoroughly to remove air pockets. In dry weather, it is necessary to water regularly for a few weeks to facilitate establishment.

Planting period

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

Intended location

Suitable for Meadow, Woodland edge, Undergrowth
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun, Partial shade, Shade
Soil pH Neutral, Calcareous
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, humus rich

Care

Pruning instructions After flowering, it is wise to cut back the stems and leaves to ground level in order to avoid excessive sowing and to encourage new foliage and promote a second flowering.
Pruning Pruning recommended once a year
Pruning time July to August
Disease resistance Very good
Overwinter Can be left in the ground
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