Amelanchier candensis 'Glenn Form' (=Rainbow Pillar)

Amelanchier canadensis ‘Glenn Form’, sold as RAINBOW PILLAR, is a small deciduous tree or large shrub selected for its narrow, upright growth. It can reach approximately 4.5 to 6 metres in height, generally keeping a width of between 2.5 and 3 metres.
The crown has a dense, symmetrical and progressively columnar structure, formed by predominantly ascending branches. This architecture makes it possible to introduce verticality without taking up the width normally associated with the other forms of Amelanchier.
In early spring, the plant is covered in white, star-shaped flowers gathered in small clusters. They are followed by rounded fruits that develop from red to dark purple tones, adding ornamental interest and value for birdlife.
The leaves emerge in bronze tones, turning green during the summer. In autumn, the foliage takes on a luminous combination of yellow, orange and red, justifying the trade name RAINBOW PILLAR and extending the seasonal interest of the cultivar.
It grows best in sun or partial shade, in deep, fertile, moist, well-drained soils. Sun exposure favours a more compact crown, more expressive flowering and more intense autumn colour.
It is particularly suitable for narrow streets, small gardens, entrances, courtyards and avenue plantings where vertical expression must be reconciled with a controlled lateral footprint. Mature specimens from Diaplant immediately bring a recognisable columnar structure, abundant flowering and a seasonal presence far greater than that of young plants.