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Agastache rugosa Alabaster

Agastache rugosa Alabaster
Agastache rugueuse, Menthe-réglisse coréenne

4,5/5
19 reviews
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3 reviews

The Alabaster Agastaches have grown beyond my expectations, reaching up to 1.5 meters (5 feet) in height... they have invaded a rose laurel of about 2 meters (7 feet) and have held on until November, with the spikes turning from white to brown. Pleasant menthol scent. In short, they thrived. And in the spring shoot, I will prune them to keep them a bit shorter. I really like their wild appearance. It's a shame I don't have the same result with my New Coral rose... Long live gardening with these surprises...

Mireille , 14/12/2022

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This plant carries a 12 months recovery warranty

More information

The Agastache rugosa 'Alabaster', a fragrant mint foliage mixed with pure white spikes, ensures a wild effect.
Height at maturity
80 cm
Spread at maturity
40 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Recommended planting time March to June
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Flowering time June to September
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Description

Perennial plant of poor soils, the Agastache rugosa 'Alabaster' produces fragrant mint foliage above which green spikes, turning pure white, create a marvel of simplicity with a wild appearance.

Perennial growing in dry prairies of America, the Agastache rugosa likes the sun and porous soils, even poor ones.

From June to September, the plant sends up beautiful green floral spikes in buds, blooming pure white. Reaching a height of 80cm (32in), the melliferous flowers attract a large number of bees and butterflies. The oval, dentate leaves of light green colour are strongly aromatic, they emit a minty fragrance when crushed.

Easy to grow, the Agastache rugosa 'Alabaster' is cultivated in a scree garden or in a wild-looking dry garden. In hot regions, it should not lack water at the beginning of flowering.

A carefree perennial, it structures the flower beds composed of stipas, echinaceas, gauras, achilleas and pennisetums.

Agastache rugosa Alabaster in pictures

Agastache rugosa Alabaster (Flowering) Flowering
Agastache rugosa Alabaster (Foliage) Foliage
Agastache rugosa Alabaster (Plant habit) Plant habit

Flowering

Flower colour white
Flowering time June to September
Inflorescence Spike
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green
Aromatic? Fragrant foliage when creased

Plant habit

Height at maturity 80 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Agastache

Species

rugosa

Cultivar

Alabaster

Family

Lamiaceae

Other common names

Agastache rugueuse, Menthe-réglisse coréenne

Product reference801311

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Planting and care

In heavy soil, we dig a hole of 30 cm (12in) in all directions, pour pure sand into it and install the seedling without adding any soil. All the species and varieties offered are deciduous, and have excellent hardiness, allowing them to acclimatise in many regions. During very harsh winters, cover the stumps with straw or dead leaves.

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€7.50 Bag
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Planting period

Recommended planting time March to June

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, well-drained

Care

Pruning instructions In the spring, prune the faded inflorescences and clean the clump. It does not have any specific diseases or pests that hinder its flowering, except for powdery mildew, which can affect the leaves during dry periods.
Pruning Pruning recommended once a year
Pruning time March to April
Disease resistance Good
Overwinter Can be left in the ground
4,5/5
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