DESCRIPTION: Blue Butterfly Delphinium has masses of beautiful panicles of navy blue trumpet-shaped flowers with white throats and blue spurs at the ends of the stems from late spring to late...
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DESCRIPTION: Blue Butterfly Delphinium has masses of beautiful panicles of navy blue trumpet-shaped flowers with white throats and blue spurs at the ends of the stems from late spring to late summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its deeply cut ferny compound leaves remain grayish green in colour throughout the season.

BOTANICAL NAME: Delphinium grandiflorum 'Butterfly Blue'
OTHER NAMES: Blue Butterfly Larkspur, Dwarf Larkspur, Dwarf Delphinium
AVERAGE MATURE HEIGHT: 30-45 cm
AVERAGE MATURE SPREAD: 30-45 cm
SUN EXPOSURE: Full sun
FLOWER COLOUR: Striking gentian blue 
FLOWERING TIME: Summer
FOLIAGE COLOUR: Silvery green
COLD HARDINESS: Zone 3 ( Should survive up to -39.9° Celsius )
WATER NEEDS: Average
OTHER FEATURES: Attractive Foliage, Attracts Birds, Butterflies & Hummingbirds, Bee Friendly, Border, Cut Flower

Landscape Attributes

Blue Butterfly Delphinium is an 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 should be cut back in late fall in preparation for winter. It is a good choice for attracting bees, butterflies and hummingbirds to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Insects
  • Disease
  • Self-Seeding

Blue Butterfly Delphinium is recommended for the following landscape applications;

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

Planting & Growing

Blue Butterfly Delphinium will grow to be about 12 inches tall at maturity extending to 18 inches tall with the flowers, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 12 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 3 years.

This plant should only be grown in full sunlight. 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 is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Blue Butterfly Delphinium 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 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. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. 

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