Black Horehound - Ballota nigra


Medium to tall, often straggling, very aromatic plant. Flowers lilac 12 to 14 mm in dense whorls along the leafy stem. Calyx funnel shaped with triangular, finely-pointed 4 to 6.5 mm long teeth.

Similar Species

Red dead-nettle, Hedge Woundwort 

Identification difficulty
ID guidance

Calyx has 5 equal lobes


Woodland margins, hedgebanks and roadside verges.

When to see it

June to September.

Life History


UK Status

Mainly found in England except the north-west. Scarcer in Wales and Scotland.

VC55 Status

Frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 247 of the 617 tetrads.

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Leicestershire & Rutland Map


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

UK Map