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Scarlet Flame Creeping Phlox

Phlox subulata 'Scarlet Flame'

  • Brilliant Scarlet Red Blooms Cover Dense Mat-Forming Plants Every Spring
  • Cold Hardy: Thrives in Zones 3-8
  • Grows 1 ft Tall and Wide
  • Showy Red, Pink Blooms From Early Spring to Late Spring
  • Deer Resistant, Drought Tolerant, Pollution Tolerant
Regular price $2847
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Plant Size

Planting & Care

Where to Plant

  • Sunlight: Scarlet Flame Creeping Phlox performs best in full sun, requiring at least 6 hours of direct light daily. While it can handle dappled shade, you will notice a significant decrease in flower density and the vibrant "flame" color will appear more muted.
  • Soil: These plants crave sharp drainage and do best in gritty or rocky soils. If you have heavy clay, mix in several inches of organic compost or fine gravel to raise the planting area, as "wet feet" during winter is the quickest way to kill this groundcover.

Watering Requirements

During the first growing season, water twice a week to ensure the roots knit into your soil. Once established, this plant is remarkably drought tolerant, but providing a deep soak during the hottest weeks of July will prevent the center of the mound from browning out. Inconsistent watering often leads to a shorter bloom window and sparse foliage.

Pruning Tips

This plant blooms on old wood, so avoid the temptation to cut it back in early spring or you will lose your flowers. The best time for a "haircut" is immediately after the blooms fade in late spring; shear the foliage back by half to encourage a fresh, carpet-like flush of green growth. This prevents the plant from becoming leggy and promotes a tighter, more weed-resistant mat.

Fertilizer Needs

Apply a balanced, slow-release fertilizer or a thin layer of compost in early spring just as new growth appears. Avoid using high-nitrogen fertilizers late in the summer, as this forces soft, tender growth that cannot harden off before the first frost. This late-season surge makes the plant much more susceptible to winter kill and fungal issues.

Delivery and Shipping

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Under $50 $9.99
$50 - $99.99 $14.99
$100 - $149.99 $16.99
$150 - $198.99 $24.99
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Specifications

Plant specifications
Plant Characteristics Cold hardy, Low Maintenance, Compact/Dwarf, Flowering, Evergreen, Groundcover, Slopes/Erosion Control, Deer-resistant, Heat Tolerant, Drought resistant, Attracts pollinators, Non-invasive
Hardiness Zone 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Sunlight Full sun
Height 1 ft
Width 1 ft
Watering Needs Low
Preferred Soil Chalky, Loamy, Peaty, Sandy
Growth Rate Moderate
Growth Habit Bushy, Spreading, Trailing
Blooms In Spring
Flower Color Red, Pink
Foliage Color Green
Native Yes
Pet Safety Non-toxic to pets
Suitable Space Outdoors
Plant Name Phlox
Botanical Name Phlox subulata 'Scarlet Flame'
Species subulata
Cultivar Scarlet Flame
Class Magnoliopsida
Does Not Ship To AK, HI, ID, MT, PR

Frequently Asked Questions

How tall and wide does Scarlet Flame Creeping Phlox grow at maturity?

  • Scarlet Flame Creeping Phlox grows 4-6 inches tall and spreads 12-18 inches wide at maturity. This low-growing, mat-forming perennial creates an excellent groundcover that suppresses weeds while providing vibrant spring color. Space plants 12-15 inches apart for full coverage.

Does Scarlet Flame Creeping Phlox prefer full sun or partial shade?

  • Scarlet Flame Creeping Phlox thrives in full sun locations for best flowering performance. While it can tolerate some light shade, you'll get the most vibrant scarlet blooms and densest growth in sunny spots. Plant it along walkways or foundation areas that receive 6+ hours of direct sunlight daily for optimal results.

What type of soil does Scarlet Flame Creeping Phlox need for best growth?

  • Scarlet Flame Creeping Phlox thrives in well-draining soil and tolerates poor, rocky conditions once established. This hardy groundcover actually performs better in lean soils than rich, fertile ones. Plant in full sun locations with good drainage to prevent root rot and encourage the most vibrant blooms.

Is Scarlet Flame Creeping Phlox drought-tolerant once established?

  • Yes, Scarlet Flame Creeping Phlox becomes quite drought-tolerant once its root system is established, typically after the first growing season. This hardy perennial thrives in sunny locations with well-draining soil. Water regularly during the first year, then reduce watering as the plants mature and spread.

When is the best time to plant Scarlet Flame Creeping Phlox?

  • Spring and fall are the ideal planting times for Scarlet Flame Creeping Phlox. This cold-hardy perennial establishes best when planted 4-6 weeks before extreme temperatures hit. Plant in well-draining soil with full sun exposure for maximum spring blooms.

How well does Scarlet Flame Creeping Phlox tolerate cold winters?

  • Scarlet Flame Creeping Phlox is described as robust and cold-hardy, with evergreen foliage that persists through winter. This perennial groundcover reliably returns year after year in cold climates. Plant it in well-draining soil for best winter survival.