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PlantFiles: Louisiana Blue Phlox, Woodland Phlox, Wild Sweet William, Wild Blue Phlox
Phlox divaricata 'Louisiana Purple'

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Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Phlox (floks) (Info)
Species: divaricata (dy-vair-ih-KAY-tuh) (Info)
Cultivar: Louisiana Purple

2 vendors have this plant for sale.

4 members have or want this plant for trade.

Category:
Perennials

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)

Sun Exposure:
Sun to Partial Shade
Light Shade

Danger:
Unknown - Tell us

Bloom Color:
Blue-Violet
Violet/Lavender

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
Herbaceous

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

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

Patent Information:
Unknown - Tell us

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

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to view:

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Thumbnail #1 of Phlox divaricata by htop

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Thumbnail #2 of Phlox divaricata by htop

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Thumbnail #3 of Phlox divaricata by htop

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Profile:

3 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive outdoorlover On Apr 15, 2008, outdoorlover from Enid, OK (Zone 7a) wrote:

This is a beautiful ground cover that blooms for many weeks in early spring. It is blooming now, and once the proper time for propagation is discovered, I'm going to spread it around. It is growing in almost full shade, although during the winter, it gets sun because there are no leaves on the trees.

Positive marysgarden On Jun 13, 2007, marysgarden from Wetumpka, AL wrote:

Grows and flowers well in almost full sun in my Zone 7b garden. Is evergreen through three winters so far.

Positive htop On Apr 19, 2004, htop from San Antonio, TX (Zone 8b) wrote:

San Antonio, Tx.
I was lucky enough to find small transplants of the Phlox divaricata last year. I bought four to test them out to be sure that they would grow well in my location. They are planted under a crepe myrtle tree where they receive a few hours of morning sun and afternoon shade. I enriched the soil by adding a lot of compost. It took them quite sometime before they began to look robust and I was afraid that they may not do well. By the fall they had begun to spread (the word "divaricate" in the name means "widely spreading"). When cool weather arrived, the foliage began to develop a nice purplish tone. This spring they are thriving with bright green new foliage growing over the top of the purple tinged leaves and have been blooming for quite some time.

Although the plant has a shallow root system and many references say to mulch around them in the summer, I found this to be unnecessary; besides, I wanted them to spread and I did not want the mulch to intefere with this. But if it is too sunny or too dry where they have been planted, blooming will decrease and the foliage will brown. It can develop powdery mildew, however. It is a wonderful ground cover.

When observing the photos of Phlox divaricata, I was interested in the many different shades of blooms. The variety I have is 'Louisiana Purple'. Listed below are some other cultivars with their bloom colors:

'Clouds of Perfume' - Ice blue
'Fullers White' - White
'Laphammi' - Lavender blue; has larger flowers, deeper color, and blooms later than most other varieties; grows 18 to 20 inches tall

Wild Blue Phlox - pale violet-blue, 8-12 inches talls, a perennial wildflower

Regional...

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

Wetumpka, Alabama
Dallas, Georgia
Hebron, Kentucky
New Orleans, Louisiana
Enid, Oklahoma
Deer Park, Texas
Rowlett, Texas
Seadrift, Texas
Leesburg, Virginia



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