Sweet-flag

Sweet-flag - Acorus calamus

Alternative names
Sweet Flag
Description
Medium to tall, tufted, rhizomatous plant. Leaves linear, pointed, rather Iris like. 7 to 20 mm wide, often with one or both margins crinkled, smelling sweetly when bruised. Flowers tiny, greenish yellow in a compact, narrow ascending cone 5 to 9 cm long, the stem prolonged above the flower cone into a leaf like spathe.
Identification difficulty
Habitat
Rivers, canals and ponds.
When to see it
Flowers June and July.
Life History
Perennial.
UK Status
Widespread but rather local in Britain.
VC55 Status
Locally fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 49 of the 617 tetrads.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured squares = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Additional images

All NatureSpot records