Dahlia coccinea 'Gardenetta Trio' – Flowering Perennial for Pots & Borders

£5.99 instead of £12.99 for a Dahlia coccinea Gardenetta Trio - save up to 54%

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£5.99

£12.99

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Dahlia coccinea 'Gardenetta Trio' – Flowering Perennial for Pots & Borders

from £4.49 P&P

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was £12.99

£5.99 instead of £12.99 for a Dahlia coccinea Gardenetta Trio - save up to 54%

Product Features

  • Long-Lasting Colour – Enjoy vibrant double blooms from midsummer until the first frost.
  • Striking Foliage – Nearly black leaves create dramatic contrast with vivid flowers.
  • Versatile Placement – Thrives in garden beds or containers, perfect for patios or borders.
  • Easy to Grow – Prefers full sun and well-drained soil; ideal for gardeners of all levels.
  • Compact Habit – Grows to a manageable size, making it suitable for small spaces.

Full Details

We're offering you a Dahlia coccinea Gardenetta Trio for £5.99, saving you up to 54% off Thompson and Morgan's's price of £12.99 (correct as of 16.04.2026).

Dahlia coccinea 'Gardenetta Trio' – Botanical Beauty for Every Garden

The Dahlia coccinea 'Gardenetta Trio' is a stunning flowering perennial known for its lush, double blooms and almost-black foliage. Belonging to the Asteraceae family, this dahlia variety brings bold colour and texture to any outdoor space. Its dramatic contrast between dark leaves and bright flowers makes it a standout choice for borders, pots, or mixed planting schemes.

Why Choose 'Gardenetta Trio'?

  • Seasonal Impact: Enjoy continuous blooms from midsummer right through to the first frost.
  • Visual Drama: Deep, nearly black foliage intensifies the effect of the vibrant flowerheads.
  • Low Maintenance: Dahlias are easy to grow and reward you with impressive displays season after season.
  • Flexible Planting: Perfect for pots, raised beds, or directly in the ground—adaptable to your garden’s needs.

Growing Guide

  • Planting Time: Plant tubers outdoors after the last frost, typically from late April to May in the UK.
  • Soil Requirements: Prefers fertile, well-drained soil with a neutral to slightly acidic pH (6.5–7.0).
  • Sunlight: Requires full sun (at least 6 hours daily) for optimal flowering.
  • Mature Size: Typically reaches around 60–90cm in height, ideal for mid-border planting or large containers.

Care & Maintenance

  • Watering: Water regularly during dry spells but avoid waterlogging.
  • Feeding: Apply a balanced liquid fertiliser every few weeks during the growing season.
  • Deadheading: Remove spent flowers to encourage continuous blooming.
  • Lifting Tubers: In colder regions (below USDA Zone 8), lift and store tubers after foliage dies back in autumn.

Design Ideas & Companions

  • 'Gardenetta Trio''s bold colours pair beautifully with ornamental grasses, salvias, or cosmos for a vibrant summer display.
  • Add structure with evergreen shrubs nearby to keep interest year-round.

FAQs

  • When is the best time to plant Dahlia coccinea 'Gardenetta Trio'?
    Plant outdoors after the last frost—typically late April to May in the UK.
  • How tall does this dahlia grow?
    Expect mature plants to reach approximately 60–90cm in height.
  • Does it require lifting in winter?
    Yes, in colder areas dig up and store tubers after the first frost. In mild regions, mulch heavily if left in situ.

The Fine Print

This deal is brought to you by Branded Garden Products Ltd T/A Thompson & Morgan VAT number: GB637851020

1008 Reviews

This deal is brought to you by Branded Garden Products Ltd T/A Thompson & Morgan VAT number: GB637851020

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