Lobelia (Lobelia erinus)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers


Lobelia erinus

A useful annual for the rock garden, containers, hanging baskets or as an edging in the border. 
Sun to shade in moist well-drained soil 

'Compact Royal Jewels' 10-14 inches tall, blue flowers

'Crystal Palace' 3-6 inches tall, blue flowers, low mound

'Regatta Series' 3-6 inches tall, blue flowers. good heat tolerance

'Laguna Series' 6-12 inches tall, blue and pink flowers. Good heat tolerance

'White Star' 6-12 inches tall, white flowers, good heat tolerance

'Techno Heat Light Blue' 6-12 inches tall, blue with white flowers, loose open habit, good heat tolerance

Mature Height
6-12 Inches
Annual Hardiness Type
Hardy Annual
Bloom Color
Bloom Season
June - October
Soil Conditions
Moist, Well-Drained
Exposure/Light Requirements
Full Sun
Partial Sun/Shade
Pests and Problems

Environmental Damage

Additional pests and problems that may affect this plant:

None serious
Additional Notes
Lobelia often does better in the cooler weather and often goes out of bloom when it gets hot. Look for heat tolerant cultivars. Shear back after first bloom, fertilize and water to maintain flowering in the summer.


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