This lovely blue-purple penstemon with thick bluish green leaves is native to the foothills and middle elevations of the Sierras where it thrives in sun to part shade with good drainage. It is drought tolerant and more importantly, one of the more garden tolerant ones. Refined, neat, and tidy, in warmer countries it will attract hummingbirds if you place it on or in a rock wall
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.