Threadleaf Coreopsis (Coreopsis verticillata)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Perennial

Threadleaf Coreopsis
Coreopsis verticillata

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Coreopsis 'Golden Shower'
Coreopsis 'Golden Shower'
 
Features
Yellow flowers on rounded plants with fine, feathery foliage. Excellent plant for almost continuous summer flowering.  
 
Culture
Prefers well-drained soils in a sun location. 
 
Cultivars

'Moonbeam' 12-18 inches tall, soft yellow flowers

'Golden Showers' 2-3 feet tall, dark yellow flowers

'Zagred' 12-18 inches tall, small yellow flowers

'Heavens Gate' 18-24 inches tall, large pink flowers with red centers

'Rosea' 12-15 inches tall, pink flowers, vigorous spreading plant

 
 
Mature Height
2-3 Feet
 
Size
Medium
 
 
USDA Hardiness Zone
3 - 9 
 
Bloom Color
Yellow
 
 
Bloom Season
June - October
 
Soil Conditions
Moist, Well-Drained
 
 
Exposure/Light Requirements
Full Sun
 
 
Foliage Color
Green
 
 
Pests and Problems

Environmental Damage

Fungal Disease

Insect Damage


Additional pests and problems that may affect this plant:

Powdery mildew, alternaria leaf spot, cecospora leaf spot, aphids
 
Additional Notes
Long living perennial. Can spread by underground rhizomes. Drought tolerant. Cut back after their first flush of flowers for an autumn flush of flowers. Don't over-fertilize as it leads to soft, floppy plants.

 

 
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