Most penstemons require rocky, fast-draining soil and so need elaborate rockeries creating. The Broad Leaved Penstemon likes and needs moisture and will usually let you manage with any soil, providing it drains well and contains a fair amount of organic matter. It also gives the most dazzling cobalt blue of any penstemon we have ever seen.
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.
Common name:Broad-leaved Penstemon, Oval-leaved Penstemon
Packet Content:20 (Approx)