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PENSTEMON CAESPITOSUS
In stock
Description
Penstemon caespitosus forms can vary from around 2" to 12" and this is one of the larger selections, making a low compact clump, which produces countless white-throated, purple-blue tubular flowers on short stems in spring and early summer.
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
Classification:Hardy perennial
Height:22.5-30cm