Vick, Albert F. W.
Phlox divaricata L.
Wild blue phlox, Louisiana phlox, Blue woodland phlox, Sweet william, Wild sweet william
Polemoniaceae (Phlox Family)
The decumbent stem
of wild blue phlox roots at the nodes sending up erect branches 8-18 in. Loose, flat clusters of fragrant, lavender or pink flowers with notched petals occur at the top of these stems. The leaves on decumbent
stems are broader than those on flowering stems. A loose cluster of slightly fragrant, light blue flowers tops a somewhat sticky stem
that produces leafy, creeping shoots at the base.
This beautiful species is most common in midwestern woods and fields. It is sometimes known as Wild Sweet William, a name also given to P. maculata
. The mature plants in the eastern part of the range have notched petals; those in the western do not. The basal runners of the lovely Creeping Phlox (P. stolonifera
) form large patches; it has fewer stem
leaves and fewer flowers in its clusters; it occurs from Pennsylvania and Ohio south to northern Georgia.
Image Gallery: 14 photo(s) available
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf Retention: Evergreen Size Notes:
8 to 18 inches Leaf:
Flowers up to 1 inch across
Fruit: Size Class:
Bloom InformationBloom Color: White , Red , Pink , Purple
Bloom Time: Mar , Apr , May
Bloom Notes: Normally blue, lavender, or white.
AL , AR , CT , DE , FL , GA , IL , IN , IA , KS , KY , LA , MD , MI , MN , MS , MO , NE , NJ , NY , NC , OH , OK , PA , SC , SD , TN , TX , VT , VA , WV , WI , DC Canada: ON
, QC Native Distribution:
S.w. Que. to MI, s. to NC & AL Native Habitat:
Moist, rich, deciduous
woods and bluffs USDA Native Status: L48(N), CAN(N)
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade , Shade
Soil Moisture: Moist
Soil pH: Alkaline (pH>7.2) , Acidic (pH<6.8)
CaCO3 Tolerance: High
Soil Description: Rich, moist, acid soils, but also found in calcareous areas. Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay.
Showy, attractive, colorful blooms for the perennial
garden. Use Wildlife:
Flowers attract butterflies, including swallowtails, gray hairstreaks, and western pygmy blues. Roots consumed by rabbits and voles. Conspicuous Flowers:
Butterflies Nectar Source: