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Penstemon 'Sour Grapes'

Beardtongue 'Sour Grapes'

Regular price
£5.59
Regular price
£6.99
Sale price
£5.59

1 litre pot

Penstemon 'Sour Grapes' is a striking, semi-evergreen perennial that produces an abundance of purple-blue, trumpet-shaped flowers, providing a bold splash of colour from summer to autumn.
  • Unique purple-blue flowers
  • Pollinator-friendly
  • Low maintenance

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  • Aspect

    Full sun to partial shade

  • Hardiness

    Half hardy

  • Flowers

    July to October

  • Soil type

    Well-drained, Loamy, Sandy

Penstemon &

  • Why we like this plant

    Penstemon 'Sour Grapes' is perfect for gardeners who want a long-lasting display of vibrant colour with minimal maintenance. Its eye-catching flowers provide valuable nectar for pollinators, making it a fantastic choice for wildlife-friendly gardens.

  • About this plant

    Known for its distinctive purple-blue flowers with a pale, almost white throat, Penstemon 'Sour Grapes' is a stunning addition to any garden. Its tall, upright stems bear numerous bell-shaped blooms, which are highly attractive to bees and butterflies. The foliage remains semi-evergreen in mild climates, adding year-round interest. With its long flowering period and easy-care nature, this variety is an excellent choice for borders, cottage gardens, and pollinator-friendly planting schemes.

  • Key features

    • Unusual purple-blue flowers with pale throats
    • Long flowering period from summer to autumn
    • Attracts bees and butterflies
    • Hardy and semi-evergreen in mild climates
    • Perfect for mixed borders and cottage gardens

  • Eventual height and
    spread

  • Growth
    habit

    Upright, bushy

  • Moisture

    Moderate; drought-tolerant once established

  • Position in
    the Garden

    Mixed borders, cottage gardens, wildlife-friendly areas

Planting guide

  • Plant in well-drained, fertile soil in full sun or partial shade
  • Space plants 30–45 cm apart to allow air circulation
  • Water well after planting and during dry spells
  • Incorporate organic matter into the soil to improve fertility

Care tips

  • Deadhead regularly to prolong flowering
  • Cut back lightly in early spring to encourage fresh growth
  • Feed with a balanced fertiliser in spring for best results
  • Ensure well-drained soil to prevent root rot
  • Protect young plants from slugs and snails

Winter care

  • Mulch around the base in colder regions for frost protection
  • Avoid heavy pruning before winter; leave stems for added protection
  • Ensure good drainage to prevent waterlogging