Giant Flowering Petunia 'Allegra F1' Mixed Collection – Tall, Double Blooms, Plug Plants

£5.99 instead of £9.99 for a Giant Petunia Mixed Collection - save up to 40%

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£5.99

£9.99

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Giant Flowering Petunia 'Allegra F1' Mixed Collection – Tall, Double Blooms, Plug Plants

from £3.59 P&P

NEW DEAL THIS WEEK

Save 40%!
was £9.99

£5.99 instead of £9.99 for a Giant Petunia Mixed Collection - save up to 40%

Product Features

  • Extraordinary Height – Grows up to 150cm (5ft), towering above standard petunias for dramatic vertical impact.
  • Fully Double Blooms – Large, lush flowers up to 12cm across provide vibrant colour and texture for over 5 months.
  • Continuous Flowering – Specially bred to re-flower from early summer into autumn, keeping displays fresh and full.
  • Low Maintenance – Male-sterile variety naturally drops spent blooms, so no deadheading required.
  • Outstanding Cut Flowers – Strong stems hold 20+ blooms per stem; lasts 7–10 days in a vase.
  • Mature Size – Height: 150cm (5ft); Spread: 75cm (30in).
  • Weather Resistant – Robust stems and modern breeding provide excellent garden performance.
  • Versatile Planting – Ideal for borders, patios, containers, and statement planting schemes.
  • Italian Heritage – Developed on Mount Vesuvius for Mediterranean flair and robust growth.
  • Plug Plants Supplied – Ready for potting now; includes 'Allegra Pastel Orchid', 'Allegra Picotee Velvet', and 'Allegra Pure White'.

Full Details

We're offering you a Giant Petunia Mixed Collection for £5.99, saving you up to 40% off Thompson and Morgan's's price of £9.99 (correct as of 07.05.2026).

Transform Your Summer Garden with Giant Petunia 'Allegra F1'

Petunia 'Allegra F1', an Italian-bred breakthrough, brings unrivalled height and opulent double blooms to your outdoor space. Reaching up to 150cm (5ft) tall and spreading to 75cm (30in), this exceptional perennial delivers a spectacular vertical presence far beyond ordinary petunias.

  • Breathtaking Blooms: Each stem produces masses of fully double flowers up to 12cm across in pastel lavender, magenta-white bicolour, and pure white shades. Enjoy continuous colour from early summer through autumn.
  • No Fuss, All Beauty: This male-sterile variety naturally sheds spent blooms—so you spend less time deadheading and more time admiring your display.
  • Perfect Indoors & Out: Strong stems hold over 20 blooms per stem, making them a standout choice for long-lasting cut flower arrangements (7–10 days in water).
  • Mediterranean Heritage: Developed on the slopes of Mount Vesuvius, these petunias thrive in UK gardens with robust growth and outstanding weather resistance.

Growing Guide & Care Tips

  • Planting Time: Plant plug plants after the last frost—typically from late April through May.
  • Sun Requirements: Choose a spot in full sun for best flowering performance.
  • Soil Preferences: Prefers fertile, well-drained soil. Add organic matter before planting for extra vigour.
  • Irrigation: Water regularly during dry spells; avoid waterlogging.
  • Pests & Diseases: Generally pest resistant but watch for aphids or slugs in damp conditions.
  • No Deadheading Needed: Enjoy effortless maintenance thanks to self-cleaning blooms.

'Allegra Collection' Varieties Included

  • 'Allegra Pastel Orchid': Soft lavender tones bring gentle elegance.
  • 'Allegra Picotee Velvet': Striking magenta with white bicolour edges for bold contrast.
  • 'Allegra Pure White': Crisp white blooms create a fresh, classic look.

Clever Design Ideas & Companion Plants

  • Create dramatic borders by pairing with upright salvias or ornamental grasses.
  • Add height and structure to patio containers alongside trailing lobelia or bacopa.
  • Makes a show-stopping centrepiece in mixed summer bedding schemes.

FAQs

  • When is the best time to plant these petunias?
    The best time is after the last frost in spring—typically late April or May in the UK.
  • How tall do they really grow?
    This variety can reach up to 150cm (5ft) when grown in ideal conditions with full sun and good soil.
  • Do I need to deadhead the flowers?
    No—these petunias are male-sterile and naturally drop spent blooms, so maintenance is minimal!

How To Redeem

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The Fine Print

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

958 Reviews

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

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