Variably hairy perennial herb to over 0.5 m tall, often suffused reddish purple. Leaves to 6 cm long, 4 cm wide, more or less ovate, stalked, margins saw-toothed. Flower cluster a terminal head of 2-3 whorls, sometimes with a few more below. Flowers with calyx hairy and tubular, the veins pronounced, stalks hairy. Corolla lilac.
Hybridises freely; a parent of several popular hybrids.
Source: (2002). Lavandula. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.