Alberta Spruce

• The dwarf Alberta spruce features dense, bright green foliage throughout the year. Virtually maintenance-free once established, the dwarf Alberta spruce requires minimal pruning to retain the familiar Christmas tree shape. Although hardy in most zones, this dwarf spruce needs extra protection again the harsh summer sun in warm, humid climates. When mature, this tree reaches a maximum height of 5 to 7 feet with a width of 2 to 3 feet. The Alberta spruce thrives in zones 2 to 7.
  
  

Japanese Maple

• Dwarf Japanese maples do surprisingly well in planters. With a variety to choose from, dwarf and semi-dwarf Japanese maples come in a wide range of colors to complement existing plants and decor. Their long, graceful leaves and abundant branches add interest to any small outdoor space. Depending on the cultivar, dwarf Japanese maples grow up to eight feet in height. Hardy in zones 5 through 8, they like full sun to partial shade. Dwarf Japanese maples adjust to most soil conditions with the addition of time-release plant food. Provide these delicate trees adequate wind protection.
  
  

Meyer Lemon

• Add tropical flavor to the patio and kitchen with a dwarf Meyer lemon tree. These round lemons have an orange-yellow color that provides striking contrast against dark green foliage. Fragrant white blooms precede the growth of the tangy-sweet fruit. At maturity, dwarf Meyer lemon trees reach 2 feet in height and can be easily moved indoors when cold weather approaches. Meyers will produce fruit indoors with direct sun, slightly dry conditions, moderate humidity and cool temperatures.
  
  

Southern Magnolia

• The magnolia has long been a fixture of southern gardens. Dwarf cultivars of this southern beauty give everyone a chance to enjoy their fragrance, deep green leaves and white blooms on a small scale. Hardy from growing zones 4 to 12, the dwarf magnolia needs full sun and a protected corner of the courtyard. Water the magnolia regularly for the first year to ensure proper root development. The dwarf magnolia will eventually reach heights between 15 and 20 feet, however, the slow growth of this dwarf tree allow it to remain a container plant for many years.