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Highlights

  • Vivid Red Blooms – Striking, lacy red flowers create bold colour in borders and containers.
  • Long Flowering Season – Enjoy vibrant blooms from late spring through summer.
  • Delicate Fragrance – Lightly perfumed flowers enhance the sensory appeal of your garden.
  • Hardy & Resilient – Withstands varied UK weather and thrives in most well-drained soils.
  • Easy to Grow – Low-maintenance perennial; ideal for both beginners and experienced gardeners.
  • Versatile Planting – Perfect for beds, borders, pots, and cottage garden schemes.
  • Supplied as Plug Plants – Ready for potting on; establish quickly for lasting garden impact.

We're offering you a 30 or 60 Dianthus Rocking Red Plants for £7.99, saving you up to 60% off Thompson and Morgan's's price of £19.99 (correct as of 24.02.2026).

Dianthus barbatus 'Rockin' Red': Hardy, Vibrant Perennial

Dianthus barbatus 'Rockin' Red', commonly known as Sweet William, is a robust perennial famed for its vivid, lacy red blooms. These upright plants create a dazzling display in borders, containers, or cottage gardens. Their compact growth habit (typically reaching 30–45cm tall) makes them perfect for adding structure and colour to any outdoor space.

  • Breathtaking Blooms: The intense scarlet-red flowers appear in dense clusters from late spring into summer, attracting bees and butterflies.
  • Scented Appeal: Each blossom carries a subtle, sweet fragrance—ideal for sensory gardens or cutting for indoor arrangements.
  • Durable Performance: Hardy throughout the UK (RHS H5), these perennials tolerate a range of weather conditions and are reliably long-lived.

Growing Guide: Planting & Care Tips

  • Planting Time: Pot on plug plants upon arrival, ideally between March and May after frost risk has passed.
  • Location: Choose a sunny spot with well-drained soil; suitable for borders, raised beds, or patio containers.
  • Soil Preference: Prefers neutral to slightly alkaline soil (pH 6.5–7.5). Avoid waterlogged sites.
  • Irrigation: Water regularly during establishment; once mature, Dianthus tolerates short dry spells.
  • Maintenance: Deadhead spent blooms to encourage further flowering. Trim back after flowering to maintain compact growth.
  • Feeding: Apply a balanced fertiliser in early spring for best results.

Clever Garden Uses & Companions

  • Create vibrant borders by pairing with Nepeta, Salvia, or Lavender.
  • Add to cottage gardens alongside Foxgloves and Aquilegia for classic charm.
  • Use in containers on patios or balconies for season-long colour and fragrance.

FAQs

  • When is the best time to plant these Dianthus plug plants?
    The ideal planting window is early spring (March–May) once the risk of frost has passed.
  • How tall do 'Rockin' Red' Dianthus typically grow?
    This variety reaches approximately 30–45cm (12–18 inches) in height at maturity.
  • Do they need full sun?
    Dianthus thrives best in full sun but will tolerate partial shade if necessary.

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

Dianthus barbatus 'Rockin' Red' Perennial Plug Plants – 30 or 60 Pack

3.6 (1,040)

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