PENSTEMON DAVIDSONII MENZIESII
A very desirable plant, with dense, compact, spreading mats of tiny green leaves carrying heads of large violet snapdragon flowers in early summer. It looks good whether trailing over the edge of a stone trough or in a selected spot on the rock garden in sun and well-drained soil.
For best results, sow immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. We sow most seeds in an unheated greenhouse and wait for natural germination, as many seeds have built-in dormancy mechanisms, often waiting for natural spring germination, hence giving them a full season of growth.