Photo by Melody

PlantFiles: Creeping Phlox, Moss Phlox
Phlox subulata 'Fort Hill'

Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Phlox (floks) (Info)
Species: subulata (sub-yoo-LAH-tuh) (Info)
Cultivar: Fort Hill

5 vendors have this plant for sale.

12 members have or want this plant for trade.


under 6 in. (15 cm)

18-24 in. (45-60 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
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)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring


Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From herbaceous stem cuttings
By simple layering
By stooling or mound layering

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 9 photos.
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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive Massgirl On Jul 6, 2010, Massgirl from Franklin, MA wrote:

I bought one of these and two Emerald Blue this past early spring. By far, this one (Fort Hill) looked the best and so far is surviving the best out of the lot! One of the Emerald Blue was eaten by something (bunny or woodchuck, I'm not sure because I have both!!) - chewed all the green clean off. It does look like it's recovering though, with green leaf growing in. But the Fort Hill wasn't touched, and it still looks green and lush in July, zone 6. The Emerald Blue that was not eaten, is not looking so good. Bare in some spots, dying on others. I hope they all come back next year okay!
By far though, Fort Hill has been looking great, whether in bloom or not!

Positive mbhoakct76 On Mar 21, 2008, mbhoakct76 from Winsted, CT wrote:

a very hardy, fast and easy going plant. This was one of the first plants i ever had and loved it cause i just couldnt kill it with my brown thumb.
I have always found a spot in my garden for a creeping phlox because i love that they are one of the earlier plants to show bright colors. The foliage can become a little boring and entangled looking by the time summer rolls around, but if i trim them up a little and keep up with a light watering - i will get another small bloom of flowers in mid summer.
I have found this plant used best along walls where you can allow it to hang (or creep) down as it desires, but currently have it i have planted in a level garden and am showing just as much of a spread!


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

Birmingham, Alabama
Dothan, Alabama
North Little Rock, Arkansas
Winsted, Connecticut
Moline, Illinois
Rockville, Maryland
Franklin, Massachusetts
Kasota, Minnesota
Binghamton, New York
North Tonawanda, New York
Smithtown, New York
Concord, North Carolina
Conway, South Carolina
North Augusta, South Carolina
Knoxville, Tennessee
Lebanon, Tennessee
San Antonio, Texas
Callands, Virginia
Spokane, Washington

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