Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.
Phlox divaricata ssp. laphamii
Phlox divaricata L. ssp. laphamii (Alph. Wood) Wherry
Lapham's Phlox, Blue Phlox, Sweet William
Polemoniaceae (Phlox Family)
Synonym(s): Phlox divaricata var. laphamii
USDA Symbol: PHDIL6
USDA Native Status: L48 (N)
Lapham’s Blue Phlox has semi-decumbent stems that send up erect branches 12-30 in. Loose clusters of showy, fragrant, usually purple flowers, with a dark "eye," occur at the top of these stems. The leaves on decumbent stems are broader than those on flowering stems.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Fruit Type: Capsule
Size Notes: Up to about 30 inches tall.
Bloom InformationBloom Color: White , Purple , Violet
Bloom Time: Mar , Apr , May , Jun , Jul
Bloom Notes: Purple to lavender to violet, occasionally white.
DistributionUSA: AL , AR , FL , GA , IA , IL , IN , KS , KY , LA , MD , MN , MO , MS , NC , NE , OK , PA , SD , TN , TX , VA , WI , WV
Native Distribution: WI to e. NE, s. & e. to FL & e. TX
Native Habitat: Moist, deciduous woods
Growing ConditionsLight Requirement: Part Shade
Soil pH: Circumneutral (pH 6.8-7.2)
Soil Description: Humus-rich, moist soils.
Conditions Comments: Blue phlox self-sows readily forming natural drifts.
PropagationDescription: Propagate by division, seed or "softwood" cuttings (rooted stem) taken in late spring.
Seed Treatment: Cold-moist stratification.
Commercially Avail: yes
BibliographyBibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Search More Titles in Bibliography
Web ReferenceWebref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Phlox divaricata ssp. laphamii in USDA Plants
FNA: Find Phlox divaricata ssp. laphamii in the Flora of North America (if available)
Google: Search Google for Phlox divaricata ssp. laphamii
MetadataRecord Modified: 2023-02-22
Research By: TWC Staff