With its fiery autumn colour and compact size,  Acer rubrum 'Sun Valley' is a popular  medium-sized, deciduous tree whose crown develops into an oval to rounded  shape. 
 The young foliage emerges reddish-green before maturing to bright green   in summer, and clusters of tiny red flowers adorn the bare branches in early   spring. 
 The classic 3-5 lobed, maple-shaped leaves turn brilliant shades of   orange and red in October, the colour being more vibrant and lasting longer   than other varieties when grown in neutral to acid soils. An excellent   landscape tree option.
                                        How to care for Acer rubrum Sun Valley:
                                         Plant in a sheltered spot, away from cold winds. Dig in a hole twice the size  the root ball, add well-rotted organic matter and stake when young. Do not  allow to dry out while it is getting established. 
 Protect young trees from winter frost with a 10cm (4in) mulch of organic   matter, taking care to leave space around the trunk of the tree. 
 No routine pruning is required, just remove any dead, damaged or crossing   branches in late autumn or winter when they are fully dormant. Avoid pruning  at any other time of the year as acers tend to 'bleed' sap if cut while they   are actively growing.