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Astelia nervosa Westland

Astelia nervosa Westland
Mountain Astelia, Silver Spear, bush flax

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This plant carries a 12 months recovery warranty

More information

This perennial plant resembles a Phormium with a dense clump of original linear and arched leaves. They are evergreen and dark green, they take on a bronze hue with silver highlights and turn red in cold weather. It is hardy down to -8°C and will thrive particularly well in mild climates, especially in oceanic regions. It grows very well in pots, everywhere else. Ideally, plant it in partial shade in a rich, non-chalky, moist, and well-drained soil.
Height at maturity
1 m
Spread at maturity
60 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -9°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time March to May, September
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Flowering time April to May
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Description

Astelia nervosa 'Westland' is a remarkably sculptural perennial plant that resembles a Phormium in its bushy habit. Its linear and slightly trailing leaves have a dark green base and bronze tones that turn red in cold weather. They are entirely covered in bristles that give silvery highlights. This not very hardy plant is decorative all year round, and will make a sensation in mild climate or coastal gardens, in borders, beds or rockeries. Elsewhere, grow it in a pot so you can protect it from the cold during winter. It prefers rich, acidic to neutral, well-drained soils that remain moist in summer.

From the asteliaceae or liliaceae family according to classification, Astelia nervosa is a rhizomatous perennial plant that grows naturally in peaty meadows on the North Island of New Zealand. It develops very silvery fine foliage. 'Westland' is a hybrid derived from A. nervosa that stands out for its sword-shaped, arched leaves tinted with silvery bronze. They turn reddish in winter. It forms a dense clump that can reach 80 to 100 cm high and 40 to 60 cm wide. Floral stems emerge from the clump in spring, in April-May. They bear white flowers arranged in panicles. On the female plants, reddish-orange berries follow.

Astelia 'Westland' is decorative all year and brings a modern touch to your compositions: borders, flower beds, edges or rockeries. It is hardy down to -8°C or even -10°C in sheltered locations so it can be planted in the ground in milder regions. It dislikes heavy frosts, as well as hot and dry conditions. Where it is not possible to plant this original plant in the ground, opt for a beautiful pot. For a contemporary border, combine your Astelia 'Westland' with Muhlenbergia capillaris, a grass with airy pink late summer flowering, and Erigeron karvinskianus with numerous white and pink daisy-like flowers.

Flowering

Flower colour white
Flowering time April to May
Inflorescence Panicle

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Plant habit

Height at maturity 1 m
Spread at maturity 60 cm
Growth rate normal

Botanical data

Genus

Astelia

Species

nervosa

Cultivar

Westland

Family

Asteliaceae

Other common names

Mountain Astelia, Silver Spear, bush flax

Origin

Cultivar or hybrid

Product reference22420

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Planting and care

Astelia nervosa 'Westland' is a hardy perennial plant (between -8 and -10°C) Which can only be grown in the open ground in regions with a mild climate, such as the Atlantic and Mediterranean coasts. Everywhere else, planting in a pot is more suitable to allow overwintering sheltered from frost, in a cool and bright room. Ideally, choose a semi-shaded or sunny location, not in direct sunlight. The astelia appreciates a rich, peaty, non-limestone soil that retains moisture but is reasonably well-drained. In summer, make sure the plant does not lack water. In winter, install a thick mulch at the base of the plant and, if necessary, cover it with a winter fleece.
For plants grown in pots, water during the growth period with non-limestone water, so that the soil never completely dries out. Apply fertiliser once a month. In winter, store the pot in a frost-free room with light and reduce water and fertiliser inputs by allowing the soil to dry superficially between two waterings.

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Planting period

Best planting time March to April
Recommended planting time March to May, September

Intended location

Suitable for Meadow
Type of use Border, Container, Greenhouse, Conservatory
Hardiness Hardy down to -9°C (USDA zone 8b) Show map
Ease of cultivation Amateur
Planting density 3 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich, moist, well-draining

Care

Pruning instructions Remove the leaves damaged by winter in the spring and the faded inflorescences after the flowering.
Pruning No pruning necessary
Disease resistance Good
Overwinter Needs protection

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