Teucrium hyrcanicum (ht 70 cm) is an interesting perennial plant from Iran and countries nearby: it has a low basal clump of deep green textured foliage and long spires of purple spires during mid to late spring, with sporadic flowering through summer. It thrives in very dry conditions and enjoys sun: though I have one blooming quite well in a partly shaded spot. I enjoy seeing it partnered with plants that have leaves with a purplish tinge or underside, such as some of the Cape Angels Plectranthus cultivars and Tradescantia pallida 'Purpurea'. I cut it right back after flowering. It does self-seed quite determinedly but so far, I wouldn't call it a nuisance. It belongs to the Lamiaceae family of plants.
This plant is attractive to bees.