Allium stipitatum 'MOUNT EVEREST'

Allium stipitatum
Allium stipitatum 'MOUNT EVEREST'
ornamental onion, Persian onion
SIZE/TYPE mid-sized perennial
USUAL HEIGHT 0.6-0.8m
USUAL WIDTH 0.2-0.2m
LEAVES deciduous broadleaf
COLOUR OF LEAVES light green
FLOWERS showy
COLOUR OF FLOWERS white
BLOOMING TIME June
LOCATION full sun
USDA zone (lowest) 3   (down to -40°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Perennials
náhled foto
Ornamental onion is an attractive bulbous perennial commonly found all around mountainous regions of northern hemisphere. Most sought-after varieties are those with huge globular inflorescence in mid spring, yet there are others that bloom in the middle of summer offering handsome foliage all season round.

Ornamental onions, too, have their white sheep in the herd. This beauty is called Mount Everest and is a large flowered variety of Persian onion from Central Asia. It makes 12-14 cm across flower heads composed of numerous star-shaped, pure white flowers with beige stamens in June for about 3 weeks. They appear atop strong and sturdy stems that usually grow about 70-80 cm tall, exceptionally in very fertile soil almost one meter. Strap-shaped, basal leaves are light to pale green, and die back soon after the peak flowering phase. You can remove them or let them wilt and compost in situ if their unsightly state is not irritating.

Large flowered ornamental onions need very well-drained soil or sand-based loam, and location in full sun. Avoid soils that remain wet especially when the plant is dormant. Should you have no other choice dig up the plant in midsummer, and plant it in a pot that is kept away from excess rain until early spring when it can be transplanted to the ground again, now with new roots that developed in the pot during dormancy. The bulb should be at least 5 cm or better 10 cm below the ground level. The stems are strong enough to withstand common weather caprices, however, open and exposed locations (windy seaside, large open fields, smooth mountain slopes etc.) are not recommended. In spite of the garlic/onion smell no part of the plant is edible. Hardy to about. -40°C (USDA zone 3).

Last update 25-01-2018
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GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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