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Polygonatum commutatum - Solomon's Seal

Polygonatum commutatum
Great Solomon's Seal, Smooth Solomon's Seal, Giant Solomon's Seal

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Perfect product - yes, I highly recommend it.

Francine, 06/03/2014

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This plant carries a 12 months recovery warranty

More information

A beautiful perennial shade plant with white giant lily-of-the-valley flowers edged in green in an upright habit.
Flower size
2 cm
Height at maturity
90 cm
Spread at maturity
30 cm
Exposure
Partial shade, Shade
Hardiness
Hardy down to -34°C
Soil moisture
Moist soil
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Recommended planting time February to April, September to November
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Flowering time May to June
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Description

Polygonatum commutatum is a vigorous perennial Solomon's seal, spectacular with its long flowering of large bell-shaped flowers, reminiscent of giant lily of the valley flowers. It reaches 90cm (35in).

 

This giant Solomon's seal forms clumps of arching stems with leafy ends. Its tender green foliage is opposite, alternate, and lanceolate, and measures 20cm (8in) long. From May to July, large white bells with green edges that are 3cm (1in) long grow in groups of 4 below the leaves, followed by spherical black fruits that are 1cm (0.4in) in diameter. This rhizomatous woodland plant has a slow growth rate but lives for a long time and requires no maintenance.

 

Not demanding, Polygonatum commutatum likes light, humus-rich and moist soil in a semi-shaded or even shaded situation. It grows in perfect harmony with wood squills, trilliums or ferns.

Polygonatum commutatum - Solomon's Seal in pictures

Polygonatum commutatum - Solomon's Seal (Flowering) Flowering
Polygonatum commutatum - Solomon's Seal (Foliage) Foliage

Flowering

Flower colour white
Flowering time May to June
Flower size 2 cm

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 90 cm
Spread at maturity 30 cm
Growth rate normal

Botanical data

Genus

Polygonatum

Species

commutatum

Family

Convallariaceae

Other common names

Great Solomon's Seal, Smooth Solomon's Seal, Giant Solomon's Seal

Origin

North America

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Planting and care

Polygonatum commutatum is easy to grow. Plant it preferably in partial shade or full shade, in light soil, rich in humus, and moist especially in spring. Add 1/3 sand and 1/3 compost to your topsoil when planting if it is poor or very heavy. Water regularly during the first few months after planting. Beware of attacks from slugs and whitefly larvae.

Planting period

Recommended planting time February to April, September to November

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Border, Slope
Hardiness Hardy down to -34°C (USDA zone 4) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Partial shade, Shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich in humus

Care

Pruning No pruning necessary
Overwinter Can be left in the ground
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