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Penstemon - 'Sour Grapes'

Penstemon - 'Sour Grapes'
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Type Herbaceous flower, Deciduous, Flowering
Form Ground-Hugging Rounded Clump
Size Medium Border Plant (50-180cm height)
Colours Violet Flowers (Summer late), Medium green Foliage
Care Regular Maintenance Required
Hardiness Half hardy
Growth Medium Growing Plant
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Penstemon - Cultivation Notes

Penstemon prefers a sunny sheltered location. This perennial is not fully hardy so avoid cold areas. Phlox flourishes on humus rich sandy soil soils. Cut stems after flowers fade. Cut back hard in Autumn / divide every 3-4 years. Mulch in autumn.


Strengths, Weaknesses & Design Usage


Strengths of Penstemon:

  • Suitable for container growing

Weaknesses of Penstemon

  • Does not tolerate very dry or very wet soils
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View all the plants listed in Genus Penstemon

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