Whorled Mint - Mentha arvensis x aquatica = M. x verticillata

Description

This is a natural hybrid between Corn Mint (M. arvensis) and Water Mint (M. aquatica) it has whorls of mauve flowers and may have either flowers or leaves at the top of the stem. Leaves are stalked, toothed and hairy. It is a taller plant than Corn Mint.

Similar Species

other mints, including hybrids and garden varieties

Identification difficulty
Recording advice

The County Recorder has asked for a specimen of this plant to be retained for verification

Habitat

Damp grassland, river banks and water margins.

When to see it

Flowering July to October.

Life History

Perennial. Sterile hybrid, spreads vegetatively by underground rhizomes.

UK Status

Widespread in much of Britain except the far north.

VC55 Status

Scarce or under recorded in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 12 of the 617 tetrads.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map