Photo by Melody

PlantFiles: Downy Phlox, Prairie Phlox
Phlox pilosa

Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Phlox (floks) (Info)
Species: pilosa (pil-OH-suh) (Info)

Synonym:Phlox pilosa subsp. pilosa

5 vendors have this plant for sale.

6 members have or want this plant for trade.


6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)

12-15 in. (30-38 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Light Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring


Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

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By Terry
Thumbnail #1 of Phlox pilosa by Terry

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Thumbnail #3 of Phlox pilosa by trioadastra


3 positives
1 neutral
No negatives

Gardeners' Notes:

Positive plant_it On May 20, 2013, plant_it from Valparaiso, IN wrote:

Prairie Phlox typically blooms during late spring or early summer for about 11 months.

The preference is full or partial sun, and moist to mesic conditions. The soil can consist of rich loam, clay loam, sandy loam, or have some rocky material. Foliar disease doesn't bother this phlox to any significant extent. It is difficult to start plants from seeds, but somewhat easier from transplants.

The nectar of the flowers attracts primarily long-tongued bees, butterflies, and skippers. Other visitors include moths and bee flies. Among the bee visitors are bumblebees, Anthophorine bees, Miner bees, and Nomadine Cuckoo bees. Butterfly and skipper visitors include the American Painted Lady, Sulfurs, Swallowtails, and Cloudywings. The caterpillars of the moth Heliothis phloxiphagus (Spotted Straw) eat the flowers, while the caterpillars of the moth Olive Arches eat the leaves. Other insects feeding on this phlox and others include Lopidea davis (Phlox Scarlet Plant Bug) and Poecilocapsus lineatus (Four-Lined Plant Bug). Mammalian herbivores readily consume Prairie Phlox, including rabbits, deer and groundhogs.

Positive Erutuon On Sep 1, 2012, Erutuon from Minneapolis, MN wrote:

I planted this two years ago (2010). It flowered the second year and this year (2012). My plant of it doesn't have a very good flower color it's kind of dusty pastel purple, not striking. It's a nice enough plant, but I hope someday I can find a specimen with deeper-colored flowers.

Positive Allwild On Apr 21, 2009, Allwild from North, TX wrote:

Phlox pilosa is native to Texas and other states. It grows wild here and is found growing typically near or under the trees in partial shade. A lovely site.

Neutral raincloud On May 22, 2007, raincloud from Sonora, TX (Zone 8b) wrote:

Does this plant do ok in indirect sunlight?


This plant has been said to grow in the following regions:

Cullman, Alabama
Alachua, Florida
Gainesville, Florida
Valparaiso, Indiana
Minneapolis, Minnesota
Saint Paul, Minnesota
Greenville, South Carolina
Memphis, Tennessee
Austin, Texas
Cleburne, Texas
Dike, Texas
Fort Worth, Texas
Longview, Texas
Spring, Texas
Ellsworth, Wisconsin

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