Sweet Alyssum (Lobularia maritima)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Annual

Sweet Alyssum
Lobularia maritima


 
Features
Popular annual for use as an edging plant where lots of flowers are needed. Good for growing between walkway stones and as a filler between taller plants. 
 
Culture
Full sun to partial shade in well-drained soils. During the summer, cut back plants to keep it flowering. Leave plants in the garden over the winter. In spring, remove plants to expose lots of self-sown seedlings. 
 
Cultivars
  • 'Pastel Carpet'
  • 'Easter Bonnet'
  • 'Snow Crystals'
  • 'Wonderland White'
 
 
Mature Height
3-6 Inches
 
Size
Small
 
 
Annual Hardiness Type
Hardy Annual
 
 
Bloom Color
Pink
Purple
White
Yellow
 
 
Bloom Season
June - October
 
Soil Conditions
Moist, Well-Drained
 
 
Exposure/Light Requirements
Full Sun
Partial Sun/Shade
 
 
Pests and Problems

Environmental Damage

Herbicide Injury


Additional pests and problems that may affect this plant:

Downey mildew, stem and crown rots

Plants decline due to poorly drained soils.

 
Additional Notes
Very good soil drainage is a must if alyssum is to perform well in the garden.

 

 
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