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Acorus calamus Variegatus

Acorus calamus Variegatus
Sweet Flag, Calamus

4,0/5
5 reviews
2 reviews
1 reviews
0 reviews
1 reviews

Shameful to see this, yet no broken foliage in the packaging.

Delacourt, 04/05/2022

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This plant carries a 12 months recovery warranty

More information

Graphic foliage, green striped with cream, for very moist soil,  or pond edge.
Height at maturity
50 cm
Spread at maturity
35 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Damp soil
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Best planting time March to April
Recommended planting time March to May
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Flowering time June to July
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Description

Acorus calamus 'Variegatus' or Variegated Sweet Flag, is distinguished by a very elegant, graphic and semi-evergreen foliage. The long ribbon-like leaves, bright green with cream-white stripes along their length, reach up to 70-80cm (28-32in) long and form wide spreading clumps. The edges of the leaves are often finely plicate. The young spring shoots have a reddish colouration.

The Variegated Sweet Flag or Calamus develops from a running, ramified and vigorous rootstock, which thrives in permanently moist soil, even in shallow water. Therefore, it is a good choice for planting at the edge of a water feature or in a bed with very moist soil. Cultivating it in a large container, such as a zinc basin, also allows for the creation of a successful mini aquatic garden by associating it with two or three shallow water plants with contrasting forms and colours, for example Cyperus papyrus 'Akhenaton'.

Insignificant flowering in early summer, with creamy spikes.

The dried rootstock has aromatic properties still used in parapharmacy and phytotherapy.

Acorus calamus Variegatus in pictures

Acorus calamus Variegatus (Foliage) Foliage
Acorus calamus Variegatus (Plant habit) Plant habit

Flowering

Flower colour green
Flowering time June to July
Inflorescence Spadix
Flowering description Insignificant.

Foliage

Foliage persistence Evergreen
Foliage colour variegated with white
Foliage description Iris-like, fragrant when bruised.

Plant habit

Height at maturity 50 cm
Spread at maturity 35 cm
Growth rate normal

Botanical data

Genus

Acorus

Species

calamus

Cultivar

Variegatus

Family

Araceae

Other common names

Sweet Flag, Calamus

Origin

Cultivar or hybrid

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Planting and care

As with all aquatic plants or those that thrive in very moist soil, prefer spring planting. Sun or partial shade is suitable for variegated sweet flag. In hot regions, prefer partial shade to avoid the scorching midday sun in summer. For vigorous growth, it requires a rich soil, enriched with organic matter before planting, remaining moist or permanently submerged. Along the edge of a pond, aromatic sweet flag should be planted at a shallow depth, slightly less than the typical species, up to 10-15cm (4-6in). Bury the rootstock about 10cm (4in) deep. Clean up clumps if necessary in late winter, to remove dry or damaged leaves. The rootstock often needs to be divided after a few years of cultivation, to keep only the growing parts and rejuvenate the clumps.

Planting period

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

Intended location

Suitable for Meadow, Pond edge
Type of use Edge of border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 3 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light)
Soil moisture Damp soil, Permanently wet.

Care

Pruning instructions Prune the old foliage at the end of winter. The division of clumps and rootstocks is done in spring; the rootstocks must be replanted immediately, as they cannot tolerate being dry. Dividing clumps is recommended every four years to rejuvenate the young plant.
Pruning Pruning recommended once a year
Pruning time February to March
Disease resistance Very good
Overwinter Can be left in the ground
4/5

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