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

Phloxdivaricata subsp. laphamii

Family
Polemoniaceae (po-le-moh-nee-AY-see-ee)
Genus
Phlox (floks)
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)
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
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
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:

Divernon, Illinois

Valparaiso, Indiana

Pacific Junction, Iowa

Hebron, Kentucky

Hopkins, Minnesota

Hudson, New Hampshire

Staten Island, New York

Enid, Oklahoma

Knoxville, Tennessee

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Gardener's Notes:

3
positives
0
neutral
0
negative
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M
Hopkins, MN (Zone 4a) | May 2013 | positive

I planted one of these last year, and it came back bigger and better this year. It is blooming like crazy right now, and I love the color.

P
Valparaiso, IN | May 2013 | positive

Beautiful plant. Native from Maine to South Dakota and Manitoba, south to Georgia, Alabama, Tennessee, Arkansas, and Oklahoma. Attracts b...Read More

O
Enid, OK (Zone 7a) | April 2009 | positive

I love this plant because its beautiful light blue flowers appear early in the spring when not much else is flowering, and it flowers in ...Read More

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