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Bransford, W.D. and Dolphia
Phlox diffusa Benth.
Mat phlox, Spreading phlox
USDA Symbol: PHDI3
USDA Native Status: L48 (N), CAN (N)
The low, circular woody mats of this phlox sprawl widely and are densely covered by yellow-green, narrow, needle-like, but not spiny, leaves. In flower, this is quite showy with blossoms of white to lavender to purple to pink. The blossoms are small but can be so numerous at times as to completely hide the leaves.
There are four subspecies of this phlox occupying different parts of its range.
Plant CharacteristicsDuration: Perennial Habit: Herb Root Type: Tap Leaf Complexity: Simple Leaf Venation: Pinnate Leaf:
Fruit: Size Class:
Bloom InformationBloom Color: White , Pink , Purple
Bloom Time: May , Jun , Jul , Aug
, WY Native Distribution: CA
& w. NV
mts., n. to s. B.C. & n.w. MT Native Habitat:
Dry, rocky mt. sites
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: Medium
Soil Description: Dry, rocky soil.
Conditions Comments: Var. longistylis occurs in the northern part of the stated range; var. diffusa to the south. A good choice for stabilizing soil.
BenefitConspicuous Flowers: yes
PropagationDescription: Sow stratified seed.
Seed Collection: Not Available
Seed Treatment: Stratify.
Commercially Avail: yes
Record Last Modified: 2007-01-01
Research By: TWC Staff