How to Grow Alpine Phlox Scarlet Flame
Alpine Phlox Scarlet Flame
Phlox subulata 'Scarlet Flame'
flowerAlpine Phlox 'Scarlet Flame' is a low-growing, mat-forming perennial ground cover prized for its vibrant scarlet-red flowers that blanket the plant in spring. This evergreen alpine native produces needle-like foliage and creates stunning color displays in rock gardens, borders, and alpine troughs. It is extremely hardy and drought-tolerant once established.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-8; most vigorous in zones 3-7
Sign up to see your zone highlighted.
Growth Stages
Establishment
4-6 weeksYoung transplants develop needle-like foliage in tight mounds; root system extends into well-draining soil.
Water regularly until established (4-6 weeks). Avoid overwatering. Apply light gravel mulch around plants to improve drainage.
Vegetative Growth
Spring through fallPlant forms dense, compact mat of fine, evergreen needle-like leaves. Foliage remains healthy through seasons with minimal maintenance.
Deadhead spent flowers to encourage continued blooming. Minimal fertilizer needed; avoid nitrogen-heavy feeds. Ensure soil remains well-draining.
Flowering
April-June (4-8 weeks depending on climate)Dense clusters of small, five-petaled scarlet-red flowers completely cover the foliage, creating a vibrant color display.
Deadhead flowers regularly to extend bloom time through spring and into early summer. Avoid overhead watering to prevent fungal issues.
Summer Dormancy
June-AugustAfter main bloom, flowering slows. Foliage remains attractive and evergreen. Plant may produce sporadic secondary flowers if deadheaded.
Water during drought. Do not fertilize. Ensure excellent air circulation around plants to prevent fungal issues in humid climates.
Dormancy & Winter
September-MarchEvergreen foliage persists; plant enters winter dormancy. Foliage may take on bronze or purplish tones in cold climates.
No supplemental watering needed in most regions. Ensure drainage is excellent to prevent root rot from winter moisture. Do not prune excessively.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Increase humidity through light misting; spray with water to dislodge. Use insecticidal soap if infestation is severe. Ensure good air circulation.
-
Improve air circulation; avoid overhead watering. Apply neem oil or sulfur-based fungicide if needed. Remove infected foliage.
-
and
Hand-pick in early morning or evening. Apply copper barriers around plants. Encourage ground beetles and carabids as natural predators.
-
Ensure excellent soil drainage. Water only when soil is dry. Remove affected plants and improve drainage in that area.
Uses
Ornamental garnish
CulinaryAlpine Phlox flowers can be used as edible garnish for desserts and salads, adding delicate scarlet color and mild floral notes to culinary presentations. [source]
Ground cover and landscape design
HouseholdWidely used in rock gardens, alpine troughs, borders, and as a low-maintenance ground cover that suppresses weeds and provides early spring color with minimal care. [source]
Dried flower arrangements
CraftScarlet flowers dry well and can be used in dried arrangements, wreaths, and floral crafts, retaining vibrant color for months. [source]
Pollinator food source
WildlifeFlowers attract bees, hoverflies, and other early spring pollinators, providing critical food resources when few other plants are blooming. [source]
Traditional herbal use
MedicinalAlpine Phlox species have been used in traditional herbalism for mild diaphoretic properties, though modern medicinal use is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Alpine Phlox is grown as an ornamental flower, not harvested. Deadhead spent blooms regularly (pinch off with fingers or use sharp scissors) to encourage continued flowering and maintain a neat appearance. Cut back lightly after flowering season ends if plants become straggly. Do not cut back in fall or winter.
Fun Facts
- 🌱 Alpine Phlox 'Scarlet Flame' is native to rocky alpine and subalpine regions of North America and has been cultivated for centuries in European alpine gardens for its stunning spring displays.
- 🌱 The common name 'Moss Pink' (used for Phlox subulata) refers to the plant's moss-like appearance when not in bloom, with its fine needle-like foliage creating a dense mat.
- 🌱 Phlox flowers are highly fragrant in some varieties; 'Scarlet Flame' produces mild to moderate fragrance that intensifies in warm afternoon sun, attracting native bees and butterflies.
Want personalized planting timelines?
Sign up to get frost dates, task lists, and more for your zone.
Get started free