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Penstemon 'Knightwick'


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A really distinctive purple. Stands out well in a border. 

  • Colour: deep mauve to white on the underside of the lobes
  • Throat: heavily pencilled
  • Height: 120cm (4ft)
  • Earliest record: 1991

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