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PENSTEMON CARDWELLII
$3.41 / packet
In stock
Description
Amongst the easiest penstemons to grow, these plants form a dwarf evergreen shrub with long, oval, leathery leaves, which in the winter turn purplish. The relatively large, purple-blue flowers open over a long period.
Sowing Advice
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.
Key Facts
Family:Scrophulariaceae
Common name:Cardwell's Penstemon
Classification:Hardy perennial
Height:15-30cm
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