Phlox Species, Louisiana Blue, Woodland Phlox, Wild Sweet William, Wild Blue Phlox

Phloxdivaricata

Family
Polemoniaceae (po-le-moh-nee-AY-see-ee)
Genus
Phlox (floks)
Species
divaricata (dy-vair-ih-KAY-tuh)
Synonym
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
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)
Danger
N/A
Bloom Color
Blue-Violet
Lavender
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Bloom Characteristics
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From herbaceous stem cuttings
By simple layering
By serpentine layering
Seed Collecting
Bag seedheads to capture ripening seed
Seed does not store well; sow as soon as possible
Regional

This plant is said to grow outdoors in the following regions:

Wetumpka, Alabama

Aurora, Colorado

Gainesville, Florida

Seminole, Florida

Barnesville, Georgia

Monroe, Georgia

Divernon, Illinois

Mount Prospect, Illinois

Newburgh, Indiana

Pacific Junction, Iowa

Benton, Kentucky

Hebron, Kentucky

Louisville, Kentucky

Taylorsville, Kentucky

Covington, Louisiana

Mandeville, Louisiana

Jamaica Plain, Massachusetts

Natick, Massachusetts

Royal Oak, Michigan

Saginaw, Michigan

Eden Prairie, Minnesota

Minneapolis, Minnesota(2 reports)

Florence, Mississippi

Mathiston, Mississippi

Ridgeland, Mississippi

Cole Camp, Missouri

Cross Timbers, Missouri

Elsberry, Missouri

Piedmont, Missouri

Sparks, Nevada

Munsonville, New Hampshire

Lanoka Harbor, New Jersey

Brooklyn, New York

Lansing, New York

Holly Springs, North Carolina

Raleigh, North Carolina

Rowland, North Carolina

Winston Salem, North Carolina

Columbus, Ohio

Grove City, Ohio

Lebanon, Ohio

Hulbert, Oklahoma

Allentown, Pennsylvania

Knoxville, Tennessee

Toone, Tennessee

Viola, Tennessee

Mc Kinney, Texas

Rowlett, Texas

San Antonio, Texas

Park City, Utah

Leesburg, Virginia

Lynchburg, Virginia

Richmond, Virginia

Laramie, Wyoming

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Featured Videos

Gardener's Notes:

11
positives
2
neutrals
0
negative
Sort By:
Sort By:
M
Eden Prairie, MN (Zone 4b) | June 2023 | positive

I bought a small patch of this from a local gardener nearly 10 years ago. I still love this plant and want it to continue spreading.
...Read More

R
Winston Salem, NC (Zone 7a) | May 2021 | positive

I am always pleased to see the pretty blue blooms of the wild sweet william. Before it blooms every spring, it looks like any other weed...Read More

C
ROSLINDALE, MA | April 2015 | positive

Blooms here (Boston Z6a) in May for about 2 weeks with a lovely display of lavender (not true blue) or white flowers.

It c...Read More

M
Newburgh, IN (Zone 6a) | April 2015 | neutral

I am saying Neutral because although it is beautiful in the spring, when it fades you have to cut back the flower stems. Also it will sp...Read More

W
Allentown, PA | December 2013 | positive

I bought a small pot of this Phlox at a local flea market 4 years ago. It was unknown to me at the time. I identified it later as a mois...Read More

M
Holly Springs, NC (Zone 7b) | July 2009 | positive

I got this plant from my mom not knowing what it was. I planted it in full sun 3 years ago and it is still going strong there much to my ...Read More

M
Coon Rapids, MN (Zone 4a) | December 2008 | positive

I think this plant can be easily moved but it tend to have its own strange habits - it will seed itself in low spots, spread to make a th...Read More

J
Lansing, NY | May 2007 | positive

I love this plant when it blooms in the spring. I have had success transplanting it to other shady, even dry locations. I would like to...Read More

W
W
Hulbert, OK (Zone 7a) | March 2007 | positive

For years I have been crossing the creek next to our
home to transplant this wonderful little plant back to the
gardens and...Read More

M
M
Benton, KY (Zone 7a) | April 2005 | positive

Wonderful little patches of intense blue greet me in the woods and along creekbanks here in west KY in early April. The Phlox divaricata ...Read More

T
Tunnel Hill, GA (Zone 7a) | March 2004 | positive

This is my favorite plant for the shade garden. I have different shades of blue ranging from almost white to purple, and the billowing wa...Read More

L
Grove City, OH (Zone 6a) | May 2003 | neutral

A good groundcover plant in shady areas.

D
D
Owens Cross Roads, AL | April 2003 | positive

If you like blue you will love this plant. It spreads thick and low to the ground. When it blooms in late spring just after the tulips, ...Read More

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