Penstemon are hardy to temperatures as low as 23☏ (-5☌) and even 5☏ (-10☌), depending on the variety. What is best is to cover the plant with a thick layer of dead leaves to keep it from freezing. In winter, no need to remove leaves: they protect Penstemon from the cold. Mulching the base of your Penstemon helps keep the soil cool and reduces the need to water.Water Penstemon in case of high temperatures, preferably in the evening.
To boost flower-bearing, remove wilted flowers regularly (deadheading), since this will stimulate the budding of new blossoms. Apart from the occasional watering during summer, you won’t need to care for them at all. Pruning and caring for Penstemon is easy. Protect cuttings from freezing in winter but keep them in a well-lit place. Keep substrate a little moist, reduce watering in winter. Plant your Penstemon cuttings in cutting soil mix. Eventually, dip the cuttings in powdered rooting agents (this step isn’t necessary, but it helps). Snip off cuttings from Penstemon stems that aren’t bearing flowers. You can even use stems pruned off in spring to prepare cuttings. To propagate your Penstemon easily, summer cuttings are definitely the best solution. Transplant in the ground in the following spring. Transplant into nursery pots after sprouting when sprouts have formed a few leaves. Sprinkle water over lightly to keep the substrate a bit moist. Place seedlings to light at a warm temperature, around 65 to 68☏ (18 to 20☌). Sow in a sheltered place, in a nursery at the end of winter in special seedling soil mix. Sowing Penstemon is difficult and efforts aren’t always crowned with success. Water regularly at the beginning and then, especially in summer, only when the substrate surface is dry. Penstemon thrive particularly in pots or garden boxes. Plant at least ten plants in any given bed to produce a remarkable visual impact. If you purchased your plants in nursery pots, it is best to plant them in the ground in spring, spacing them 12 inches (30 cm) apart and adding “flower plant” soil mix to the garden soil. Read also: Beardtongue, flowers all summer long. Height – 26 to 32 inches (0.6 to 0.8 meters)Įasy to grow, here are the best practices to care for your Penstemon and extend their blooming. 
Penstemon, also called beardtongues, are beautiful perennials that bloom all summer long.įamily – Scrophulariaceae (figwort family)
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