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Burncoose Nurseries - part of the Caerhays Estate
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    PENSTEMON 'Sour Grapes'
    © Burncoose Nurseries, all pictures for illustrative purposes only.
    <
    PENSTEMON 'Sour Grapes' PENSTEMON 'Sour Grapes' PENSTEMON 'Sour Grapes' PENSTEMON 'Sour Grapes' CAMPANULA lactiflora 'Loddon Anna' and PENSTEMON © Burncoose Nurseries, all pictures for illustrative purposes only. PENSTEMON 'Sour Grapes' and VERBASCUM chaixii 'Album' © Burncoose Nurseries, all pictures for illustrative purposes only.
    >

    PENSTEMON 'Sour Grapes'

    Commonly known as Beard tongue

    AWARD
    Greyish-blue flowers suffused with rich purple and tinged green
    plant size comparison icon
    1 to 1.5 Litre   - Click to view photo - Early in the year, typically January til end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch
    Delivery Information
    Available late spring to early summer 2025
    £12.50 each 
    MULTIBUY SAVING
    Any 3+ £11.00 each
    Available late spring to early summer 2025 - Spring according to the Met Office is defined as March 1st - May 31st. Therefore late spring is mid-April onwards. This is not a guaranteed date but an estimate and subject to availability.
     
    Full Plant Details - Sun/Soil & other attributes - Click to close
    • Flowering
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      Jan
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      Feb
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      Mar
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      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Sep
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      Oct
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      Nov
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      Dec
    • Good to know
      Wildlife plant - bees. Deadhead to prolong flowering. Leave foliage through winter for protection.
    • Pests & Diseases
      Chrysanthemum eelworm, powdery mildew
    • Place of origin
      Garden origin. Collected by Margery Fish, East Lambrook, Somerset, UK
    • Resistant to honey fungus
      These plants have little or few problems with honey fungus.
    • Semi-evergreen
      Keeps some of its foliage all year, and will drop some leaves as well.
      Elliptic to narrowly ovate leaves 12cm (4¾in) long
    • Blue
      Greyish blue with rich purple
    • Purple
      Shades of purple/mauve/lilac/violet
    • Bell/Lantern
    • Panicles
    • Tubular
      5-7cm (2-3in) long
    • Border
      Suitable for a mixed or herbaceous border
    • Fully hardy
    • Height
      60cm (24in)
    • Spread
      45cm (18in)
    • Herbaceous
      Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.
      Erect perennial
    • Hardy - average winter
      Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
    • Autumn Seasonal Interest
    • Summer Seasonal Interest
    • Fertile well drained soil
      Give winter mulch
    • Full sun
    • Partial shade
    • Bee friendly
    • Mature Size
      60cm (24in)
      		 Herbaceous - guide for size not form Watering Can
        45cm (18in)
      		  
    View Detailed Plant Description

     

    View Planting Tips and Care Advice
    Herbaceous Plants - Video Collection
    Penstemon - Growing Guide
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    View Planting Combinations

    Useful extras...

    Fertilisers & Feeds - Empathy
    All-purpose Seaweed Stimulant
    All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
    1 ltr
    £8.50
    Vermin & Pest Control
    SB Plant Invigorator
    This is a non-biological non-chemical plant insecticide and mildewcide. Works against the physical motion of the insect. Perfect for all plants and edible crops.
    500 ml
    £8.00
    Fertilisers & Feeds - Vitax
    Q4 Pelleted Fertiliser
    A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
    0.9 kg
    £6.00
    Unavailable
    2.5 kg
    £13.00
    Unavailable
    4.5 kg
    £25.00
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