Lavandula angustifolia 'Dwarf Blue'

A shrub up to 40cm high, occasionally up to 60cm high, with a dense but rather untidy habit, evergreen, aromatic, linear, greyish green leaves which are up to 6cm long and widely spaced, giving the plant a wsipy look, and flowering stems up to 20-25cm long topped by spikes 3-4.5cm long of fragrant, soft violet flowers from about midsummer onwards