Phlox carolina L.
Carolina Phlox, Summer Phlox, Thickleaf Phlox
Polemoniaceae (Phlox Family)
USDA Symbol: PHCA19
This is an erect, perennial phlox, 24-30 in. tall. The slender, red-streaked flowering stems occur singly or in clusters. Thick-leaf phlox flowers are lavender to pink and arranged in loose, broadly cylindrical clusters. The leaves are bright-green, oval and leathery.
This phlox continues to bloom intermittently until frost.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Retention: Evergreen
Size Notes: Usually 1 to 3 feet, but can reach 5 feet.
Leaf: dark green
Size Class: 1-3 ft.
Bloom InformationBloom Color: White , Pink , Purple
Bloom Time: May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: Blooms mostly during the hottest part of the summer, occasionally continues until frost.
DistributionUSA: AL , AR , FL , GA , IL , IN , KY , LA , MD , MO , MS , NC , OK , SC , TN , TX , VA
Native Distribution: S.w. GA to n.e. TX, n. to MD & s.e. MO
Native Habitat: Woodland edges & openings
Growing ConditionsWater Use: Medium , High
Light Requirement: Sun , Part Shade
Soil Moisture: Moist , Wet
Soil pH: Acidic (pH<6.8)
Drought Tolerance: Low
Heat Tolerant: yes
Soil Description: Rich, acid loams and sands, but tolerates lime
Conditions Comments: This phlox continues to bloom intermittently until frost and is resistant to powdery mildew. Carolina phlox self-sows but is not aggressive.
BenefitUse Ornamental: Excellent flower garden plant.
Use Wildlife: Attracts butterflies and hummingbirds.
Conspicuous Flowers: yes
Fragrant Flowers: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes
PropagationPropagation Material: Root Division , Seeds
Description: Propagate by seed, cuttings, or division.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
National Wetland Indicator Status
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
Search More Titles in Bibliography
Additional resourcesUSDA: Find Phlox carolina in USDA Plants
FNA: Find Phlox carolina in the Flora of North America (if available)
Google: Search Google for Phlox carolina
MetadataRecord Modified: 2016-07-08
Research By: TWC Staff