Easily grown in average, medium, well-drained soil in full sun to part shade. Tolerant of a somewhat wide range of soils. Root suckers are common, and if not removed, will result in a shrubby growth habit for the plant.
Amelanchier x grandiflora is a hybrid cross between two species of North American serviceberry, namely, A. arborea (downy serviceberry) and A. laevis (Allegheny serviceberry). It is known in commerce today by several showy cultivars. This is a small, deciduous, usually multi-trunked understory tree or tall shrub which typically matures to 15-20’ tall. Flowers bloom in April followed by edible fruits (3/8" diameter) in June (hence the sometimes used common name of Juneberry for amelanchiers). Berries resemble blueberries in taste and may be used in jams, jellies and pies. Finely-toothed, oval-lanceolate leaves (to 3" long) emerge with bronze tints in spring, mature to dark green from late spring throughout summer before finally turning brilliant red to orange-red in fall.
Specific epithet means large flowers.
'Autumn Brilliance' has brilliant orange-red fall color (hence the cultivar name).
No serious insect or disease problems. This cultivar reportedly has excellent disease resistance.
Best in shrub borders or as a small ornamental tree. Also effective in woodland or naturalized areas, particularly with dark or shaded backdrops which tend to highlight the form, flowers and fall color of the plant. Also effective along stream banks and ponds.