Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Acorus Calamus L.

Commonly known as

Calamus

Acorus Calamus L., or Sweet Flag, is a wetland perennial with sword-shaped leaves and a spicy fragrance, valued in medicine and perfumery.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Identification & Classification

Color & Surface

Vibrant "highlighter yellow" scales. They turn greenish when wet because the yellow skin becomes see-through, revealing the green algae inside.

Shape & Form

A scaly "crust" made of tiny, flat tiles. It grows in irregular patches that look like cracked paint or a tiled floor on the ground.

Fruiting

Small, sunken black or reddish dots in the center of the scales. These act like "launch pads" to release the lichen's spores.

Growth Habitat & Substrate

Strictly soil-dwelling in dry areas. It grows on dirt or among mosses. Pro tip: if it's on a bare rock, it's a different species.

Taxonomy Classification

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Arales

Family

Acoraceae Martinov

Genus

Acorus L.

Species

Acorus Calamus L.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Care Requirements

Sunlight

Thrives in full sun to partial shade, requiring at least 4–6 hours of direct light for vigorous growth. Tolerates light shade in wetland margins.

Temperature

Hardy in temperate climates, tolerating temperatures from -15°C to 30°C. Prefers cool to warm conditions and can survive brief frost.

Nutrient

Benefits from nutrient-rich substrates. Occasional organic fertilizer in spring supports healthy growth, but avoid excessive feeding.

Soil

Grows best in rich, muddy, or silty soils with high organic content. Tolerates heavy clay and waterlogged substrates typical of wetlands.

Maintenance

Low-maintenance once established. Remove dead foliage in late winter and divide rhizomes every few years to control spread and maintain vigor.

Water

Requires consistently moist to wet conditions, thriving in shallow water or saturated soils. Ideal for pond edges and boggy areas; do not allow to dry out.

Seasonal Behavior

Spring

New sword-shaped leaves emerge rapidly as temperatures warm. Rhizomes spread actively, and the aromatic fragrance becomes more pronounced.

Autumn

Growth slows as temperatures decline. Foliage begins to yellow and die back, with the plant storing energy in its rhizomes for winter.

Winter

Dormant in winter, with above-ground foliage dying back completely in colder climates. Rhizomes remain viable beneath the soil or water.

Summer

Peak vegetative growth occurs in summer with lush foliage. Spadix flower spikes may appear, though flowering is often sparse in cultivation.

Seasonal Behavior

Spring

New sword-shaped leaves emerge rapidly as temperatures warm. Rhizomes spread actively, and the aromatic fragrance becomes more pronounced.

Autumn

Growth slows as temperatures decline. Foliage begins to yellow and die back, with the plant storing energy in its rhizomes for winter.

Winter

Dormant in winter, with above-ground foliage dying back completely in colder climates. Rhizomes remain viable beneath the soil or water.

Summer

Peak vegetative growth occurs in summer with lush foliage. Spadix flower spikes may appear, though flowering is often sparse in cultivation.

Seasonal Behavior

Spring

New sword-shaped leaves emerge rapidly as temperatures warm. Rhizomes spread actively, and the aromatic fragrance becomes more pronounced.

Autumn

Growth slows as temperatures decline. Foliage begins to yellow and die back, with the plant storing energy in its rhizomes for winter.

Winter

Dormant in winter, with above-ground foliage dying back completely in colder climates. Rhizomes remain viable beneath the soil or water.

Summer

Peak vegetative growth occurs in summer with lush foliage. Spadix flower spikes may appear, though flowering is often sparse in cultivation.

Seasonal Behavior

Spring

New sword-shaped leaves emerge rapidly as temperatures warm. Rhizomes spread actively, and the aromatic fragrance becomes more pronounced.

Autumn

Growth slows as temperatures decline. Foliage begins to yellow and die back, with the plant storing energy in its rhizomes for winter.

Winter

Dormant in winter, with above-ground foliage dying back completely in colder climates. Rhizomes remain viable beneath the soil or water.

Summer

Peak vegetative growth occurs in summer with lush foliage. Spadix flower spikes may appear, though flowering is often sparse in cultivation.

Seasonal Behavior

Spring

New sword-shaped leaves emerge rapidly as temperatures warm. Rhizomes spread actively, and the aromatic fragrance becomes more pronounced.

Autumn

Growth slows as temperatures decline. Foliage begins to yellow and die back, with the plant storing energy in its rhizomes for winter.

Winter

Dormant in winter, with above-ground foliage dying back completely in colder climates. Rhizomes remain viable beneath the soil or water.

Summer

Peak vegetative growth occurs in summer with lush foliage. Spadix flower spikes may appear, though flowering is often sparse in cultivation.

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Botanical earth

support@botanical.earth

© 2026 Botanical Earth. All Rights Reserved

Botanical earth

support@botanical.earth

© 2026 Botanical Earth. All Rights Reserved