Prunus serrulata ‘Ukon’
 
Large semi-double blossom. Starting as pink buds, the flowers open to shades of Chartreuse pale-green which looks striking against the pale-bronze newly unfurling foliage, then turning pure white. Flowers around the same time as ‘Kanzan’.
 
Wide spreading vase shaped tree. Dark green leaves through Summer with finely serrated margins. Autumn foliage are shades of flame-orange and bronzy-red.
 
Best as a single specimen with a dark green background, or amongst pink cherry varieties such as ‘Pink Perfection’ and ‘Kanzan’, which will really show off these blossoms.
 
'Ukon' will benefit from pruning when young. Once a balanced tree frame has been formed, it won’t require pruning for many years. With age, Ukon will eventually bare leaves and flowers only at the tip of the branch and new growth should be pruned back shortly after flowering to improve tree shape. 
 
Tree Size: 4 m high and 4 m wide (at 20 years)
 
Tree Care: For best results plant in full sun in fertile, free draining soil, preferably a friable loam with good aeration.
 
If the soil is free draining, dig a hole twice the size of the root ball, plant the tree so the top of the root ball is level with the soil line and back fill with a soil and compost mixture. If the soil is not free draining, plant the tree in a raised mound of soil and compost mix, to prevent water logging.
 
Water in well at planting, and water regularly, especially in dry spells. Cherries are shallow rooted and young trees will benefit from being mulched. Apply mulch in a ring around the tree base, keeping clear of the trunk.