Penstemon 'Sour Grapes' (penstemon 'Sour Grapes') is a member of the Plantaginaceae family. This perennials exhibits a clump forming growth habit and is characterized by its semi evergreen foliage. It has a hardiness rating of H4 and no significant fragrance.
When fully mature, Penstemon 'Sour Grapes' can reach an ultimate height of 0.5–1 metres and a spread of 0.1–0.5 metres. For optimal growth, it prefers west–facing,south–facing,east–facing aspect and exposed,sheltered exposure. It thrives best in chalk,loam,sand soil types and should be placed in a full sun,partial shade position.
| Seasonal colour |
Flower
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Foliage
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Fruit
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Stem
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| Autumn | ||||
| Winter |