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perennial

Blue Star Laurentia

Isotoma axillaris 'Blue Star'

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Blue Star Laurentia (Isotoma axillaris 'Blue Star') at Hana Gardens

Blue Star Laurentia flowers

(Photo courtesy of NetPS Plant Finder)

Height:  12 inches

Spacing:  12 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  9a

Other Names:  Rock Isotome, Blue Star Flower, Solenopsis,

Description:

This variety features dainty, star shaped, sky blue flowers that rise above ferny cut foliage; this neatly mounded plant is great for border fronts, patio edging, or containers

Ornamental Features

Blue Star Laurentia features showy sky blue star-shaped flowers rising above the foliage from late spring to early fall. Its attractive ferny leaves remain dark green in color throughout the season.

Landscape Attributes

Blue Star Laurentia is an herbaceous perennial with a mounded form. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It has no significant negative characteristics.

Blue Star Laurentia is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • Rock/Alpine Gardens
  • General Garden Use
  • Container Planting

Planting & Growing

Blue Star Laurentia will grow to be about 12 inches tall at maturity, with a spread of 15 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 12 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 5 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. This plant does not require much in the way of fertilizing once established. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America.

Blue Star Laurentia is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers and foliage against which the thriller plants stand out. 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
Accent  Massing  Rock  Garden  Container 
Applications
Flowers  Foliage Color  Texture 
Ornamental Features