Phlox (P) 'Blue Boy' | 11cm Pot | Blue Flower

Price range: £4.18 through £4.90

Common Names

  • Garden Phlox
  • Tall Phlox
  • Summer Phlox

Phlox (P) ‘Blue Boy’ offers stunning blue-purple flowers that add cool, vertical colour to UK gardens from summer to autumn. This fragrant, hardy perennial attracts pollinators, making it perfect for borders and wildlife-friendly spaces. Easy to grow and maintain.

7565 in stock

£4.90
3 – 9 pieces
£4.64 (5% off)
10 – 24 pieces
£4.18 (15% off)
25+ pieces
3
Phlox (P) 'Blue Boy'
£14.70

Uncover Phlox (P) ‘Blue Boy’, a stunning perennial known for its captivating blue-purple flowers, bringing cool colour to UK gardens all summer.

Phlox (P) ‘Blue Boy’ is an excellent choice for adding vertical interest and vibrant colour to your borders. This Garden Phlox cultivar, a form of Phlox paniculata, thrives in British growing conditions. It offers a reliable and spectacular display. Its unique hue, combined with a sweet fragrance, makes it a favourite among gardeners. Furthermore, this plant attracts beneficial pollinators, enhancing biodiversity. Its robust nature ensures it is both easy to grow and maintain, becoming a valued part of your collection.

Key Features of Phlox (P) ‘Blue Boy’

  • Captivating blue-purple flowers create a vibrant display.
  • Pleasing, sweet fragrance enhances garden enjoyment.
  • Attracts beneficial pollinators like bees and butterflies.
  • Provides excellent vertical interest for garden borders.
  • Hardy and easy to grow, suited to diverse UK climates.
  • Blooms generously from mid-summer into early autumn.

Understanding Phlox (P) ‘Blue Boy’

The name Phlox comes from the Greek for “flame,” a nod to some species’ bright colours. Yet, ‘Blue Boy’ offers a cooler palette. This cultivar likely got its name from the serene blue tones within its purple blooms. As a Phlox paniculata variety, it’s often called Garden Phlox or Tall Phlox. These herbaceous perennials are admired for their upright habit and ample flowering. They die back in winter but return each spring. New foliage grows, ensuring renewed vigour annually.

Floral Display and Foliage

Phlox (P) ‘Blue Boy’ showcases a spectacular array of star-shaped flowers, tightly clustered into large, impressive panicles. These blossoms exhibit a beautiful range of purplish-blue shades, creating a truly unique visual impact in the summer garden. Each flower contributes to a cloud of colour that stands out vividly against the backdrop of its dark green, lance-shaped leaves. The foliage is neatly arranged along sturdy stems, forming a dense, attractive bush before the flowering period. When these flowers appear, they also release a delightful, sweet scent, which perfumes the air, especially on warm summer evenings. This fragrance adds another layer of sensory pleasure to your garden experience.

Perfect for UK Gardens

This cultivar is ideally suited for various garden settings across the United Kingdom. Its upright growth habit makes Phlox (P) ‘Blue Boy’ perfect for the middle or back of mixed perennial borders, where it adds height and structure. Gardeners often use it to create cottage garden charm or to fill larger containers, bringing its beauty closer to patios. The plant typically reaches heights of 60 to 90 centimetres and spreads about 45 to 60 centimetres, forming a tidy clump. To maintain vigour and encourage more flowers, gardeners can deadhead spent blooms. Cutting the plant back in late autumn helps prepare it for winter dormancy.

Wildlife Appeal

A notable benefit of planting Phlox (P) ‘Blue Boy’ is its strong appeal to local wildlife. Its nectar-rich flowers are a magnet for various pollinators, including busy bees and colourful butterflies. They visit frequently, helping to support local ecosystems and bringing life and movement into your garden. By choosing this plant, you actively contribute to biodiversity. Its long flowering period ensures a steady food source for these vital insects throughout the summer months. Consequently, your garden becomes a vibrant hub for nature, full of buzzing and fluttering activity.

Max Height 0.90 at maturity
Max Spread 0.60 at maturity
Growth Rate Average
Average growth
Position
Full Sun Partial Sun
Soil Type
Loam Clay Silt Peat
H7 H7 – Very hardy

Hardy in the harshest UK conditions and below. Suitable for mountain regions.

−25°C +15°C
Typical minimum: Below -20°C

Care Notes

Water Phlox (P) 'Blue Boy' regularly, especially during dry spells, to keep the soil consistently moist. Deadhead spent flowers promptly; this encourages a longer blooming period and prevents unwanted self-seeding. In late autumn or early spring, cut back the plant's stems to ground level to prepare for new growth. Divide established clumps every three to five years to maintain plant vigour and prevent overcrowding. Apply a layer of organic mulch annually around the base in spring to retain moisture and enrich the soil.