This attractive dwarf plant has attractive, fine-leaved, bluish-green foliage, and from May through to August small spikes of dwarf snapdragons appear, in that most unusual of colours, yellowy-brown, with some being a mix of yellow and mauve! The name actually means 'rust-coloured'! This tiny plant come from Spain and Portugal and technically, although it is a perennial, it often acts as a reseeding annual.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.