Penstemon News

If you wish to place a mail order for Penstemon availability will be updated on our sales page weekly from June 2023.

Penstemon 'Powis Castle'


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Available 2022
Similar to Port Wine with slightly longer and narrower flowers. A good grower 

  • Colour: deep reddish purple                                      
  • Throat: white with fine parallel lines in deep claret
  • Height: 90cm (3ft)                  
  • Earliest record: 1992

Cultivation Do's and Dont's

o    Do deadhead regularly
o    Don’t prune until spring
o    Do prune old growth when new shoots are 3-4” long
o    Do add organic matter or grit if planting in heavy wet soil
o    Do plant in a sunny position
o    Do enjoy the flowers from June to October