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Summit Alyssum

Aurinia saxatilis 'Summit'

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Summit Alyssum (Aurinia saxatilis 'Summit') at Ashcombe Farm & Greenhouses

Aurinia saxatilis 'Summit' flowers

Aurinia saxatilis 'Summit' flowers

(Photo courtesy of NetPS Plant Finder)

Height:  8 inches

Spread:  20 inches

Sunlight:  full sun 

Hardiness Zone:  3a

Other Names:  Alyssum saxatile

Description:

Sown in early spring, this variety quickly matures into a glorious mat of bright yellow in a dazzling floral display all season long; trim back to get returning blooms; an arresting sight when massed

Ornamental Features

Summit Alyssum is covered in stunning clusters of fragrant yellow star-shaped flowers along the stems from mid spring to mid fall. Its small narrow leaves remain grayish green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Summit Alyssum is a dense herbaceous perennial with a ground-hugging habit of growth. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees and butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Summit Alyssum is recommended for the following landscape applications;

  • Mass Planting
  • Rock/Alpine Gardens
  • Border Edging
  • General Garden Use

Planting & Growing

Summit Alyssum will grow to be about 7 inches tall at maturity, with a spread of 20 inches. Its foliage tends to remain low and dense right to the ground. It grows at a medium rate, and tends to be biennial, meaning that it puts on vegetative growth the first year, flowers the second, and then dies.

This plant should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Edging  Garden 
Applications
Flowers  Attracts Wildlife 
Ornamental Features