If you're thinking of growing a magnolia tree in a small garden, you should consider the variety carefully, as some can grow quite large. Look for compact or dwarf varieties like Magnolia stellata or Magnolia soulangeana, which are bred specifically for smaller spaces. They still produce beautiful flowers, but won't overwhelm your garden. Make sure to choose a tree that's suitable for your climate and provide it with enough sunlight and good soil. With regular pruning, you can keep the tree to a manageable size and enjoy its stunning blooms in your small garden.