Alnus glutinosa 'IMPERIALIS'

Alnus glutinosa
Alnus glutinosa 'IMPERIALIS'
common alder
SIZE/TYPE medium-sized tree
USUAL HEIGHT 5-8m
USUAL WIDTH 2-4m
LEAVES deciduous broadleaf
COLOUR OF LEAVES green
FLOWERS insignificant or non-blooming
COLOUR OF FLOWERS
BLOOMING TIME
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 Deciduous broadleaf
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Common alder is a European native plant. There are varieties, however, that are very uncommon and I am not afraid to say exquisite. Such as this variety: Imperialis.

Imperialis alder bears mid-green, deciduous, very deeply cut, 4-8 cm long, narrow leaves that look like tiny witches’ brooms. But I suppose they do not fly. It grows slowly into a large shrub or mid-sized tree which, thanks to horizontal layers of branches, resembles Himalayan cedar from a distance, and its finely cut leaves give it a fluffy look. Such plant needs to be chosen a beautiful place in a garden so you can wholly admire its unusual appearance.

Alders are maintenance-free plants. They thrive in full sun and constantly moist (not wet), medium fertile soil. Pruning can be done in late winter/early spring before the buds begin to swell. Hardy to min. -40°C (USDA zone 3).

Last update 08-01-2012
SIZES and PRICES
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Alnus glutinosa height 100-125 cm
STANDARD
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Alnus glutinosa height 100-125 cm
STANDARD
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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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