Hybridization can occur in the wild with English lavender (Lavandula angustifolia).

Lavandula latifolia is a strongly aromatic shrub growing to 30–80 cm tall.

The leaves are evergreen, 3–6 cm long and 5–8 mm broad.

The fruit is a nut, indehiscent, monosperm of hardened pericarp.

It consists of 4 small nuts which often remain locked inside the calyx tube.