Suitable for smaller yards, although some shrubs can grow to the size of a small tree!
Can provide a spectacular variety of color to the yard through foliage, berries, and bark.
Berry producing shrubs attract birds.
Come in a variety of sizes. Planng for the long term growth is advisable. Make sure your tree has room to grow up (powerlines), down (sewer lines) and out (buildings).
Coniferous trees produce cones and generally do not lose their needles in the winter. Like decidous trees, planting for the long term is strongly recommended.