We're really happy to announce we've had a wonderful "Show season", with GOLD medals at Hampton Court, Tatton and Chelsea.   

Due to our busy summer at the shows, our online shop will now be open from November 2021, with plants being despatched in Spring 2022.  Many thanks for your patience. 

Penstemon 'Sour Grapes'


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A very popular variety that has unfortunately been wrongly labeled for years. Stapleford Gem has been sold as Sour Grapes.
The flower colour of proper Sour Grapes dark cobalt with a marked throat. Very distinctive.
  • Colour: darker than cobalt, some flowers dull violet blue                
  • Throat: white but with strongly defined markings in maroon
  • Height: 75cm (ft)
  • Earliest record: 1930’s

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