Richardson's Phlox

Phlox richardsonii

Native to:
Canada, Russia, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Polemoniaceae
Genus:
Phlox
Species:
Phlox richardsonii
USDA Symbol:
PHRI4

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
15 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug
Bloom Colors:
white, pink, lavender
Ground Cover:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

Caterpillar Keystone:
★★☆☆☆ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
butterflies, bees
Deer Resistant:
Yes
Fragrant:
Yes

Soil Requirements

Soil Type:
well-drained, sandy or rocky soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to open, rocky slopes and prairies

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–30 days
Notes:
Seeds benefit from cold stratification; light may enhance germination.

The above propagation data sourced from Claude AI