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A picture of a Sweet Flag

Sweet Flag

Acorus spp.

Also known as

Acorus

Acorus calamus kz1 by Krzysztof Ziarnek, Kenraiz (CC BY-SA 3.0)

Full Sun
Moderate watering
Frost Hardy

8a

USDA zone

-12°C

Minimum temperature

Expected size

Height
Spread

Max

Min

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Sweet Flag

A photo of Sweet Flag
A photo of Sweet Flag
A photo of Sweet Flag
A photo of Sweet Flag
A photo of Sweet Flag

Sweet Flag Overview

The genus Acorus contains around 2 semi-evergreen perennial aquatic species growing either submerged or on the margins of water. They produce aromatic foliage and small horn-shaped flowers 5-7cm in length in midsummer. Commonly known as Sweet Flag, they best suit marshy, wet areas and some cultivars are used as aquarium plants.

How to propagate Sweet Flag

Division

Divide the rhizomes at the start of the growing season in spring.

Rhizomes

Other uses of Sweet Flag

Grown for their often aromatic foliage. Suitable for water gardens and boggy areas.