Polemoniaceae
Phlox diffusa subsp. scleranthifolia
Phlox diffusa subsp. scleranthifolia
Also known as Phlox douglasii scleranthifolia, Phlox scleranthifolia, Phlox diffusa var. scleranthifolia
Flowering Plants · Native Plants · Spreading Phlox · Alpine Plant · Rock Garden · Native Perennial · Western Native · Slow Growing · Groundcover · Spring Bloomer · Drought Adapted · Intermountain West
This spreading phlox subspecies is a slow-growing alpine and subalpine native suited to well-drained, gravelly or rocky soils in the intermountain West. It prefers cool conditions and partial shade, particularly in hotter climates, and requires only moderate watering. A wonderful choice for rock gardens and native plant landscapes, it produces small, delicate white to pale pink flowers in late spring.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately until soil is moist at root depth; allow soil to dry slightly between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 6.5–8.5
- Temperature
- -30°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 6 in – 12 in
- Spread
- 18 in
- Spacing
- 12 in apart
- Growth rate
- Slow
- Root depth
- Shallow
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho, Montana, Nebraska, Nevada, Oregon, South Dakota, Utah, Washington, Wyoming
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Phlox
Related plants from the same genus
Phlox bifida subsp. stellaria
Phlox bifida subsp. stellaria
Partial Sun · Moderate · Fast
Phlox alyssifolia subsp. collina
Phlox alyssifolia subsp. collina
Partial Sun · Moderate · Moderate
Phlox alyssifolia subsp. abdita
Phlox alyssifolia subsp. abdita
Partial Sun · Moderate · Moderate
Phlox diffusa subsp. longistylis
Phlox diffusa subsp. longistylis
Partial Sun · Moderate · Slow
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