Amelanchier alnifolia 'Obelisk' is a large shrub which is upright and has white flowers in spring. It has green leaves that will turn stunning yellow before falling off in the autumn. If well watered it is a great plant for a patio container. If required it can be pruned to the shape desired after flowering. Flowers April May. Height 250 300cm. Supplied in a 3 litre pot.