Phlox 'Blue Moon'

Phlox divaricata 'Blue Moon': Woodland Drift in Cool Blue

Delicately fragrant and softly coloured, Phlox 'Blue Moon' is a spring-blooming woodland phlox prized for its compact habit and rich lavender-blue flowers. Each lightly fragrant bloom hovers just above a mound of lush green foliage, creating a carpet of colour in part-shade settings. Blooming in mid to late spring, it’s a pollinator-friendly groundcover that naturalizes gently, offering one of the most vivid blue tones among early woodland perennials.

Plant Characteristics:

• Height: 20–30 cm
• Spread: 30–45 cm
• Flower Colour: Lavender-blue
• Flowering Period: Mid to late spring
• Foliage: Semi-evergreen, deep green, ovate leaves
• Sunlight Requirements: Part shade to dappled sun
• Soil Requirements: Moist, well-drained, humus-rich soil

Uses and Benefits: 'Blue Moon' is ideal for woodland edges, shade borders, and naturalized plantings where early colour and groundcover effect are needed. Its fragrant flowers support early-season pollinators, including native bees and butterflies. This compact cultivar holds a tighter form than the species, making it especially useful in smaller gardens or tidy designs seeking a soft, natural look.

Companion Plants: Pair with the flowing lavender mounds of Nepeta 'Walker's Low', the cheerful golden tufts of Coreopsis 'Zagreb', and the upright elegance of Calamagrostis 'Karl Foerster' for a transitional sun-to-part-shade combination that blends soft textures, rhythmic movement, and a progression of blooms from spring into summer.

Care Instructions: Plant in part shade with moist, humus-rich, well-drained soil. Water during dry spells, especially in early spring. Cut back spent flowers to neaten appearance and encourage denser growth. Divide clumps every few years in early spring or fall.

History: 'Blue Moon' is a selection of the North American native Phlox divaricata, bred for its deeper blue hue and compact growth habit. It has become a staple in shade and woodland gardens for its colour, fragrance, and native plant value.

Final Thoughts: Cool, calming, and quietly radiant, Phlox 'Blue Moon' brings early-season magic to woodland plantings—an essential soft blue that anchors the spring palette with grace and charm.