Water Mint

meannt an uisge / Mentha aquatica

Water Mint is a native, highly fragrant perennial found across Scotland, especially on riverbanks, marshes and beside lochs. Water Mint regularly hybridises with other native mints; in fact, when Water Mint crosses with Spearmint, it makes Peppermint! Water Mint has a deeper, earthy taste compared to other mints and is commonly foraged for food and tea, and has become a popular ingredient in Scottish small-batch gins.

The flowers bloom in mid-summer to early autumn and are important pollinators for bees and butterflies. Water Mint is recognisable by its hairy leaves and clusters of lilac-pink flowers. Historically, the plant was used to cover odours in medieval halls and was brewed to treat upset stomachs, headaches and applied to sunburns. In the Highlands, Water Mint was also used as a bath scent, palate cleanser and surface cleaner.

Key Identification Features:

From mid-summer to autumn, it produces clusters of tiny, fluffy lilac-pink to pale purple flowers. These usually form a tight, rounded ball at the very top of the stem, with sometimes an extra whorl or two sitting just below.
The most definitive feature is the powerful, refreshing peppermint scent released immediately when the leaves or stems are bruised or crushed.
Like all members of the mint family, the stems are distinctly four-sided. They are often tinged with purple or red and can be hairy or smooth.
It typically grows directly in or beside wet, marshy habitats like pond margins, streams, and damp woodlands across the UK.