We're really happy to announce we've had a wonderful show season in 2021, with GOLD medals at Hampton Court, Tatton Park and Chelsea Flower Show.
Dates for where we are exhibiting in 2022 are on the Show page.

Penstemon orders will be dispatched after Malvern Spring Show.

Penstemon 'Sour Grapes'


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