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Showy Catmint

Nepeta grandiflora

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Showy Catmint (Nepeta grandiflora) at Ashcombe Farm & Greenhouses

Nepeta grandiflora flowers

Nepeta grandiflora flowers

(Photo courtesy of NetPS Plant Finder)

Showy Catmint (Nepeta grandiflora) at Ashcombe Farm & Greenhouses

Nepeta grandiflora in bloom

Nepeta grandiflora in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  30 inches

Spread:  24 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  4a

Ornamental Features

Showy Catmint has masses of beautiful spikes of lightly-scented royal blue flowers with sky blue overtones rising above the foliage from late spring to early fall, which are most effective when planted in groupings. Its small fragrant pointy leaves remain grayish green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Showy Catmint is a dense herbaceous perennial with a mounded form. 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 butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Self-Seeding

Showy Catmint is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Container Planting

Planting & Growing

Showy Catmint will grow to be about 24 inches tall at maturity, with a spread of 24 inches. 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 10 years.

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 highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by division.

Showy Catmint is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It can be used either as 'filler' or as a 'thriller' in the 'spiller-thriller-filler' container combination, depending on the height and form of the other plants used in the container planting. 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  Garden  Groundcover  Container 
Applications
Flowers  Attracts Wildlife 
Ornamental Features