Penstemon heterophyllus Electric Blue
Penstemon heterophyllus Electric Blue
Beard Tongue

Penstemon heterophyllus Electric Blue



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Electric Blue is a low-growing plant with multiple spikes of impressive electric blue flowers, great for adding colour right through the autumn, which will benefit from regular picking. Let it grow up through other plants and grasses in the border, which act as supports to this sometimes rangy plant.


A favourite cottage garden plant since Victorian times, Penstemons have large bell-shaped flowers in tapering spires on mid-height stems, rather like a smaller version of the foxglove. These vigorous perennials are drought tolerant and fairly hardy.

  • Flowers: June - September
  • Half Hardy
  • Drought Tolerant
  • All soil types
  • South, East or West facing
  • Full sun
  • Sheltered

Cut back hard in spring. Deadhead or pick regularly to encourage more flowers. In colder areas shelter from cold winds and protect in winter with mulch.