Moss Phlox

Moss Phlox

Phlox subulata 'Scarlet Flame'

This mounding phlox bears fragrant red flowers in spring summer: a reliable garden perennial valued for its colourful summer display and attractiveness to butterflies and hummingbirds.

  • Fragrant red flower clusters are produced in spring summer, attracting butterflies, hummingbirds, and other pollinators.
  • Plant in full sun with good air circulation to minimize powdery mildew, a common challenge for garden phlox in humid Ontario summers.
  • Mounding habit, reaching 12 cm at maturity; divide every three years to maintain vigour and improve air circulation.
  • Best in full sun to partial shade to full shade with average, dry, well-drained soil.
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Well-drained, Dry, Average
Drought Tolerant
Hardiness Zone
3 – 3
Mature Height (meters)
0.08 – 0.12
Mature Spread (meters)
0.3 – 0.4
Growth Rate
Medium
Flower Colour
Red
Foliage Colour
Green
Bloom Time
SpringSummer
Habit
Mounding
Deer Resistant
Rabbit Resistant
Pollinator Friendly
Fragrant
Landscape Uses
Border, Rock garden
Growing & Maintenance Tips
Grows best in a well-drained soil with a high organic content, with medium moisture, in full sun; however, they will tolerate partial shade. It is drought tolerant once established. Shear back after flowering to improve the overall appearance and to perhaps encourage new flowers throughout the summer. Provide good air circulation when choosing a location for this species to reduce the potential of powdery mildew. It is best to not prune in the fall but clean up winter-damaged foliage in the spring.

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