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perennial

Snowtop Garden Gloxinia

Incarvillea delavayi 'Snowtop'

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Snowtop Garden Gloxinia (Incarvillea delavayi 'Snowtop') at Lakeshore Garden Centres

Snowtop Garden Gloxinia flowers

Snowtop Garden Gloxinia flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  12 inches

Flower Height:  18 inches

Spacing:  15 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  6a

Other Names:  Hardy Gloxinia, Chinese Trumpet Flower

Description:

Large, pure white trumpets with gold eyes rise above long, deeply divided foliage to make this a showy plant for gardens or containers; use a winter mulch in exposed areas or colder zones to help overwinter the fleshy taproot; requires good drainage

Ornamental Features

Snowtop Garden Gloxinia features showy white trumpet-shaped flowers with gold throats rising above the foliage from late spring to mid summer, which emerge from distinctive chartreuse flower buds. The flowers are excellent for cutting. Its serrated lobed leaves remain green in colour throughout the season.

Landscape Attributes

Snowtop Garden Gloxinia is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This plant will require occasional maintenance and upkeep. Trim off the flower heads after they fade and die to encourage more blooms late into the season. It has no significant negative characteristics.

Snowtop Garden Gloxinia is recommended for the following landscape applications;

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

Planting & Growing

Snowtop Garden Gloxinia 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 15 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a medium 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 dry to average moisture levels with very well-drained soil, and will often die in standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is not particular as to soil pH, but grows best in sandy soils. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. 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.

Snowtop Garden Gloxinia 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 larger 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. Contact our experts for more information on how to protect it over the winter months.

This plant is not reliably hardy in our region, and certain restrictions may apply; contact the store for more information.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Edging  Garden  Container 
Applications
Flowers 
Ornamental Features