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Value-for-money

Helleborus sternii - Evergreen Helleborus

Helleborus x sternii
Stern's hybrid Hellebore

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I am very satisfied. See you soon for another order this autumn. Thank you.

Christine L., 23/04/2018

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This plant carries a 12 months recovery warranty

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Value-for-money
Lovely perennial bearing beautiful clusters of lime-green flowers and featuring graphic foliage, green marbled with white and strongly dentate along the edges.
Flower size
6 cm
Height at maturity
40 cm
Spread at maturity
30 cm
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil moisture
Dry soil, Moist soil
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Recommended planting time February to May, September to November
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Flowering time February to April
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Description

Hellebore x sternii is a pretty perennial with beautiful clusters of lime green flowers and graphic foliage, green marbled with white and strongly dentate on the edge.

 

This hybrid hellebore is the result of a cross-breeding between the Corsican Hellebore (Helleborus argutifolius), with glaucous green leaves, green flowers, and good hardiness, and the magnificent Helleborus lividus, native to the island of Majorca, with low hardiness, compact vegetation, small often marbled leaves, and plum-colored stems and flowers.

 

Hellebore sternii has a dense habit, with strong upright stems, brown-purple in colour, which carry both the foliage and the flowers, giving it a unique appearance. Gathered in terminal clusters, the lime green flowers bloom from February to April. The leaves are leathery, evergreen, dark green with white veins.  These are finely toothed on the edge, adding extra appeal to the plant.

Unlike oriental hellebores, Hellebore x sternii grows in the sun (tolerating partial shade in hot regions) in any well-draining and permeable soil, and tolerates rocky and limestone soils. It is very hardy and withstands cold and dry winters well, but it does not tolerate water stagnation during winter.

 

Plant it in a rock garden, on a slope, along a path in a meadow garden or a romantic garden, alongside heucheras, botanical tulips, ornamental garlic, and evergreen grasses.

Helleborus sternii - Evergreen Helleborus in pictures

Helleborus sternii - Evergreen Helleborus (Flowering) Flowering
Helleborus sternii - Evergreen Helleborus (Foliage) Foliage
Helleborus sternii - Evergreen Helleborus (Plant habit) Plant habit

Flowering

Flower colour green
Flowering time February to April
Flower size 6 cm

Foliage

Foliage persistence Evergreen
Foliage colour green

Plant habit

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

Botanical data

Genus

Helleborus

Species

x sternii

Family

Ranunculaceae

Other common names

Stern's hybrid Hellebore

Origin

Cultivar or hybrid

Product reference6914881

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Planting and care

Hellebore x sternii grows in the sun, in any well-drained soil. They thrive in deeply worked soil mixed with a quantity of organic matter. To fertilise, use bone meal or another organic fertilizer. In acidic soil, preferably add a bit of lime. Water the plants well after planting and then add a layer of mulch 2 to 5 cm (1 to 2in) thick. Regularly remove dead leaves. For species with leaves emerging from the ground, such as orientalis, cut most of the leaves to highlight the flowers. Be careful not to plant the young plants too close to each other to promote their development.

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Planting period

Recommended planting time February to May, September to November

Intended location

Suitable for Shaded rockery
Type of use Border, Edge of border, Container, Slope
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, Rich and well-drained

Care

Pruning No pruning necessary
Overwinter Can be left in the ground
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