
trefle.io · Taken May 30, 2022 by Philippe Lopez (cc-by-sa)
Polemoniaceae
Spreading phlox
Phlox diffusa
Also known as Phlox diffusa subsp. typica, Carpet phlox, Creeping phlox, Phlox douglasii var. diffusa
Flowering Plants · Native Plants · Ground Cover · Rock Garden · Alpine Plant · Native Perennial · Mat Forming · Spring Bloomer · Pollinator · Western Us Native · Phlox · Low Growing
Spreading phlox is a low-growing, mat-forming native perennial that carpets rocky slopes and alpine gardens with a profusion of pink, lavender, or white flowers in spring. It thrives in well-drained, gritty soils with part shade to full sun and is an excellent choice for rock gardens, slopes, and ground cover applications. Once established it requires little supplemental watering and needs only light trimming after flowering to maintain its compact, spreading form.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water lightly to moderately; soil should be well-drained and allowed to dry slightly between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6.5–8.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 10 ft – 30 ft
- Spread
- 15 ft
- Spacing
- 18 in apart
- Growth rate
- Slow
- Root depth
- Shallow
- Flowers
- Purple
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alberta, British Columbia, California, 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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