Keep the garden vertical. That's why it's good to look for shrubs and trees that max out interest as they grow up, not out. Try dwarf varieties for a small backyard, as well as more columnar evergreens (bonus—they boost wintertime interest, too).
Euonymus Dwarf Winged 'Burning Bush - Easily grown in average, medium, well-drained soil in full sun to part shade. Adaptable shrub which tolerates a wide range of soils except for wet, poorly-drained ones. Also tolerates considerable shade.
Check out 44 Best Shrubs for Containers. You might know some plants and some may surprise you but one thing is sure- Youll like to have some of these shrubs right away in your container garden. - Gardening Is Life