Garden Phlox (Phlox paniculata)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Perennial

Garden Phlox
Phlox paniculata

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Phlox 'Hardy Red'
Phlox 'Hardy Red'
 
Features
Large clusters of flowers on upright plants.  
 
Culture
Moist rich soil high in organic matter in a full sun location. Heavy feeder.  
 
Cultivars

'David' 3-4 feet tall, white flowers, mildew resistant

'Eva Cullum' 2-3 feet tall, pink flowers, mildew resistant

'Laura' 2-3 feet tall, purple flowers, mildew resistant

'Nicky' 2-3 feet tall, purple flowers, mildew resistant

'Red Feelings' 18-24 inches tall, red flowers, very long lasting

'Shorty White' 15 inches tall, white flowers, mildew resistant

'Star Fire' 2-3 feet tall, red flowers, long bloom period

 
 
Mature Height
3-4 Feet
 
Size
Medium
 
 
USDA Hardiness Zone
4 - 8 
 
Bloom Color
Bi-color
Blue
Lavender
Peach
Pink
Purple
Red
White
 
 
Bloom Season
July - September
 
Soil Conditions
Moist, Well-Drained
 
 
Exposure/Light Requirements
Full Sun
 
 
Foliage Color
Green
 
 
Pests and Problems

Environmental Damage

Fungal Disease


Additional pests and problems that may affect this plant:

Powdery mildew, stem and root rots
 
Additional Notes
Provide good air circulation around plants. Phlox are heavy feeders. Need frequent division to keep vigorous. May require staking. Phlox stolonifera (woodland phlox) a good choice in the shade as it is shade tolerant. Phlox subulata(creeping phlox) good choice as an early spring blooming groundcover. Needs well-drained soil in order to survive long term.

 

 
Related Resources
Home, Yard & Garden Pest Guide
Illinois Commercial Landscape and Turfgrass Pest Management Handbook
U of IL - Distance Diagnosis through Digital Imaging
U of IL - Plant Clinic