Description

Acorus calamus ‘Variegatus’ is a beautifully variegated form of Sweet Flag, prized for its cream‑striped, sword‑shaped foliage that brightens pond edges and adds architectural structure. When the leaves are brushed or crushed, they release a clean, sweet fragrance, making this plant both ornamental and sensory.

This hardy, clump‑forming marginal thrives in shallow water or consistently damp soil, offering year‑round interest and excellent ecological value. A perfect choice for wildlife ponds, natural filtration zones, and ornamental margins where colour and texture matter.

Key Features

• Striking cream‑variegated foliage
• Aromatic leaves with a sweet, fresh scent
• Excellent for wildlife ponds and natural filtration
• Hardy, architectural, and reliable
• Adds brightness and structure to pond margins

Planting & Positioning

• Planting depth: 0–10 cm above crown
• Position: Full sun to part shade
• Ideal for: Pond margins, bog gardens, natural filtration zones, wildlife ponds
• Growth habit: Upright, clump‑forming perennial
• Flowering period: May–July (subtle greenish‑yellow spadix)

Care & Maintenance

• Very low maintenance
• Cut back old foliage in late winter or early spring
• Divide every 2–3 years to maintain vigour
• Fully hardy in all UK climates

Technical Data

• Botanical name: Acorus calamus ‘Variegatus’
• Growth rate: Medium
• Supplied as: Bare‑root or potted (depending on stock)
• Wildlife value: Good (shelter, structure, filtration)
• Native status: Cultivar of a naturalised species

Companion Plant Suggestions 

• Iris laevigata – elegant blue flowers contrast beautifully with variegated foliage
• Scirpus tabernaemontani ‘Zebrinus’ – striped stems echo the variegation theme
• Lysimachia clethroides – graceful white flower spikes complement the pale foliage
• Myosotis scorpioides ‘Snowflake’ – low white flowers brighten the base of the planting

FAQ 

Is Acorus calamus ‘Variegatus’ fully hardy

Yes — it is fully hardy across the UK and performs reliably year after year.

Does the variegation fade

No — the cream striping remains strong throughout the season, especially in full sun.

Is it suitable for small ponds

Yes — its upright, tidy habit makes it ideal for both small and large ponds.

Does it help with filtration

Yes — its dense root system supports natural pond filtration and water clarity.