Gemini Blue Laurentia

Isotoma 'Gemini Blue'

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Gemini Blue Laurentia (Isotoma 'Gemini Blue') at Caan Floral & Greenhouse

Gemini Blue Laurentia flowers

(Photo courtesy of NetPS Plant Finder)

Gemini Blue Laurentia (Isotoma 'Gemini Blue') at Caan Floral & Greenhouse

Gemini Blue Laurentia in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  10 inches

Spacing:  10 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  (annual)

Other Names:  Rock Isotome, Blue Star Flower, Solenopsis


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

Ornamental Features

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

Landscape Attributes

Gemini Blue Laurentia is an herbaceous annual 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.

Gemini Blue Laurentia is recommended for the following landscape applications;

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

Planting & Growing

Gemini Blue Laurentia will grow to be about 10 inches tall at maturity, with a spread of 14 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 10 inches apart. Its foliage tends to remain low and dense right to the ground. Although it's not a true annual, this fast-growing plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.

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. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This particular variety is an interspecific hybrid.

Gemini Blue 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
Accent  Massing  Rock  Garden  Container 
Flowers  Foliage Color  Texture 
Ornamental Features