Lavandula x intermedia 'Grosso'. Mid blue flowers in July and August. Comparatively broad, aromatic, grey-green leaves, evergreen. Height 0.9m. Spread 0.9m. Hot sunny sites in well drained soils.They dislike wet soils especially in winter. Can be trimmed lightly after flowering and further back in the spring to keep the plant bushy often reluctant to regrow from old wood.