Penstemon Sour Grapes


(Penstemon ‘Sour Grapes’)


Sour Grapes is another of the many Penstemon that are quick and easy to grow and prolific flowering. Attractive for most of the year and a food source for native birds.


The flowers are a deep mauve, a little like squashed dark grapes, and they appear from spring through to autumn.


Penstemons work well with other perennials and lower growing shrubs, in large pots and the garden. They prefer a sunny position and normal garden soil with good drainage.


During winter prune to a woody frame about 30cm from the ground.


Regular applications of Seasol and Power Feed will keep it looking its best.


  • Red can = Little water in hot, dry weather.
  • Green can = Deep watering every few weeks in hot, dry weather.
  • Blue can = Deep watering weekly in hot, dry weather.

Codes are a guide only and watering requirements will be affected by soil type, competition, mulching, wind and many other factors. Try to group plants with the same code in the one bed.

CAUTION: May be harmful if eaten.

Herb Attributes

Plants Needed per Square Metre 4
Habit A bushy perennial plant with upright stems that bear the tubular flower.
Position Full Sun, Heavy Frost.
Height 70CM
Width 70CM