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annual

Frosty Knight Alyssum

Lobularia 'Frosty Knight'

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Frosty Knight Alyssum (Lobularia 'Frosty Knight') at Platt Hill Nursery

Frosty Knight Alyssum flowers

Frosty Knight Alyssum flowers

(Photo courtesy of NetPS Plant Finder)

Height:  6 inches

Spacing:  15 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  (annual)

Other Names:  Sweet Alyssum, Alyssum maritimum, Sweet Alison

Brand:  Proven Winners

Ornamental Features

Frosty Knight Alyssum is blanketed in stunning clusters of fragrant white star-shaped flowers at the ends of the stems from mid spring to mid fall. Its tiny narrow leaves remain grayish green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Frosty Knight Alyssum is a dense herbaceous annual with a trailing habit of growth, eventually spilling over the edges of hanging baskets and containers. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect.

This plant will require occasional maintenance and upkeep, and should not require much pruning, except when necessary, such as to remove dieback. 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.

Frosty Knight Alyssum is recommended for the following landscape applications;

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

Planting & Growing

Frosty Knight Alyssum will grow to be only 6 inches tall at maturity, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 15 inches apart. Its foliage tends to remain low and dense right to the ground. This fast-growing annual will normally live for one full growing season, needing replacement the following year.

This plant does best in full sun to partial shade. It requires an evenly moist well-drained soil for optimal growth, but will die in standing water. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This particular variety is an interspecific hybrid. It can be propagated by cuttings; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Frosty Knight Alyssum is a fine choice for the garden, but it is also a good selection for planting in hanging baskets. Because of its trailing habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

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

This Plant Finder tool is an online catalog representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact your nearest Platt Hill Nursery store for current availability. It does not include our entire inventory of plants, so be sure to visit us to see varieties that may not be represented on this list.



Bloomingdale: 222 W Lake St, Bloomingdale, IL 60108

Carpentersville: 2400 Randall Rd, Carpentersville, IL 60110

Mon - Sat: 9am to 6pm, Sun: 10am-5pm

We are closed JULY 4th

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