Phlox 'Ultraviolet'

Phlox paniculata 'Ultraviolet': Vivid Colour, Summer Intensity

Electric and eye-catching, Phlox 'Ultraviolet' lives up to its name with deep, saturated purple blooms that bring high drama and pollinator activity to the summer garden. This upright, mildew-resistant cultivar produces dense flower heads on sturdy stems, blooming from midsummer into early fall. Its bold hue holds strong in heat and sun, adding a rich counterpoint to softer pastels and golden tones in mixed borders and pollinator-friendly plantings.

Plant Characteristics:

• Height: 70–85 cm
• Spread: 50–60 cm
• Flower Colour: Intense violet-purple
• Flowering Period: Midsummer to early fall
• Foliage: Dark green, upright, disease resistant
• Sunlight Requirements: Full sun
• Soil Requirements: Moist, well-drained, fertile soil

Uses and Benefits: 'Ultraviolet' is a statement plant for borders, cutting gardens, and wildlife plantings where bold colour and strong form are desired. Its vivid flowers draw in butterflies, bees, and hummingbirds, while its clean foliage and reliable performance make it a go-to for summer impact. It pairs especially well with grasses and sun-loving perennials that bloom through the height of the season.

Companion Plants: Combine with the soft, lemony tones of Achillea 'Moonshine', the deep inky spikes of Salvia 'Noche', and the flowing, golden seed heads of Sporobolus heterolepsis for a richly textured, drought-tolerant combination that hums with colour, contrast, and pollinator energy.

Care Instructions: Plant in full sun with moist, well-drained soil. Water regularly, particularly during dry periods. Deadhead to extend bloom and maintain a tidy appearance. Cut back in late fall or early spring, and divide every few years to maintain vigour and prevent overcrowding.

History: Selected for its vibrant flower colour and robust garden performance, 'Ultraviolet' is part of a modern wave of phlox cultivars that blend ornamental appeal with improved disease resistance—offering powerful colour with ease of care.

Final Thoughts: Bold, long-blooming, and buzzing with life, Phlox 'Ultraviolet' brings radiant intensity to summer borders—lighting up the landscape with rich colour and effortless grace.