Plant Database

perennial

Mont Blanc Ornamental Onion

Allium 'Mont Blanc'

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Mont Blanc Ornamental Onion (Allium 'Mont Blanc') at GardenWorks

Mont Blanc Ornamental Onion flowers

Mont Blanc Ornamental Onion flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  12 inches

Flower Height:  4 feet

Spread:  12 inches

Sunlight:  full sun 

Hardiness Zone:  2a

Other Names:  Flowering Onion

Description:

Striking 4 inch white globe flowers emerge from thick strappy green foliage; attracts butterflies; plant close together for a massed effect or plant futher apart among lower growing plantss

Ornamental Features

Mont Blanc Ornamental Onion features bold balls of lightly-scented white flowers at the ends of the stems from late spring to early summer. The flowers are excellent for cutting. Its fragrant sword-like leaves remain green in colour throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Mont Blanc Ornamental Onion is an open herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively coarse texture can be used to stand it apart from other garden plants with finer foliage.

This is a relatively low maintenance plant, and should only be pruned after flowering to avoid removing any of the current season's flowers. 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. It has no significant negative characteristics.

Mont Blanc Ornamental Onion is recommended for the following landscape applications;

  • Vertical Accent
  • Mass Planting
  • General Garden Use

Planting & Growing

Mont Blanc Ornamental Onion will grow to be about 12 inches tall at maturity extending to 4 feet tall with the flowers, with a spread of 12 inches. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years. As this plant tends to go dormant in summer, it is best interplanted with late-season bloomers to hide the dying foliage.

This plant should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This particular variety is an interspecific hybrid. It can be propagated by multiplication of the underground bulbs; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Articulation  Massing  Garden 
Applications
Flowers  Texture  Plant Form  Attracts Wildlife 
Ornamental Features


Disclaimer - This Plant Database is an online catalog representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact your favourite GardenWorks location directly for current availability. It does not include our entire inventory of plants, so be sure to visit GardenWorks to see varieties that may not be represented on this list.