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Agastache rugosa f. albiflora Alabaster seeds - Korean mint

Agastache rugosa Alabaster
Korean Mint, Anise Hyssop

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Often grown as an annual, this magnificent agastache is a perennial plant with spikes that start off green and then turn white with a hint of bronze, above dark green foliage that emits a minty scent. It has been awarded the Royal Horticultural Society's Award of Garden Merit. An ornamental plant for slightly wild areas of the garden, or as a culinary herb.
Flower size
1 cm
Height at maturity
80 cm
Exposure
Sun
Annual / Perennial
Perennial
Germination time (days)
50 days
Sowing method
Sowing under cover
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Sowing period March to April
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Flowering time July to October
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Description

Agastache rugosa f. albiflora 'Alabaster' is a short-lived perennial plant that produces pleasantly scented mint foliage. In summer, it is covered with beautiful spikes filled with tiny, highly nectar-rich flowers that are green at first, then white and tinged with bronze. This highly decorative plant blooms in large clumps for months if spent flowers are removed. It is perfect for slightly wild areas of the garden or as a culinary plant. It thrives in full sun, fertile, and well-drained soil.

Agastache rugosa is a plant from the lamiaceae family, native to North America and growing in dry meadows. The plant is not as hardy as European mints. Although perennial, it needs to be propagated every year or at least every 3 years. In nature as well as in the garden, Agastache easily hybridises with other species and self-seeds abundantly. 80cm tall and 30cm wide, 'Alabaster' has an upright habit and herbaceous tuft. Its angular stems are adorned with leaves which are dark green on the upper side and lighter on the underside, triangular and elongated, with roughly toothed edges, 8cm long and hairy. They give off an aroma that strongly resembles mint. It is mainly cultivated for the beauty of its long floral spikes that appear during summer, from July to October. The small tubular two-lipped flowers are grouped in thin and very dense terminal spikes. It is a good nectariferous plant.

As a perennial plant that thrives in poor soil, Agastache is a wonder of simplicity with a wild appearance. It loves the sun and porous soils. It is easy to grow and can be cultivated in rock gardens or gravel gardens. In hot regions, it should not lack water at the beginning of flowering. It structures natural or country-style flower beds, composed of nepetas, stipas, echinaceas, gauras, yarrows, and fountain grasses. In the vegetable garden, it pairs well with thyme, savory, chervil, or basil. The dried flowers can be preserved for bouquets. The leaves are traditionally used in cooking as a substitute for mint, or in herbal teas after drying.

Flowering

Flower colour white
Flowering time July to October
Inflorescence Spike
Flower size 1 cm
Fragrance Fragrant, mint
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Annual
Foliage colour dark green
Aromatic? Fragrant foliage when creased
Foliage description Mint-scented

Plant habit

Height at maturity 80 cm
Spread at maturity 30 cm
Growth rate normal

Botanical data

Genus

Agastache

Species

rugosa

Cultivar

Alabaster

Family

Lamiaceae

Other common names

Korean Mint, Anise Hyssop

Botanical synonyms

Lophanthus rugosus Alabaster

Origin

Cultivar or hybrid

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Planting and care

Sow from February to April at 15-20°C in good quality soil and cover with a fine layer of compost or vermiculite. Keep the soil moist but not soggy and make sure to give the seeds enough light to germinate. To speed up the process, place in a propagator or place the seed tray inside a polythene bag until germination (30-90 days).

When the plants are strong enough to handle, transplant them into pots and move them to a cooler place until they are ready to take outdoors. When all risk of frost is over, harden them off for 7 to 10 days then plant them out in a sunny location with fertile, well-drained soil. Make sure to leave about 60 cm between each plant.

  1. 17,50 €
  2. 7,50 € Bag
  3. 9,90 € Tin

Sowing period

Sowing period March to April
Sowing method Sowing under cover
Germination time (days) 50 days

Intended location

Suitable for Meadow
Type of use Border, Edge of border, Slope
Hardiness Hardy down to -12°C (USDA zone 8a) Show map
Ease of cultivation Amateur
Exposure Sun
Soil pH Any
Soil moisture Moist soil, Free-draining, rich

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