While pretty flower pots, hanging baskets and shrubs all create a picturesque scene, trees have the potential to add depth and height to your outdoor space. Planting a tree may seem daunting at first, but the right choice will create a striking focal point in your garden or transform a cluttered area into an open, peaceful haven. Whether you're looking to add a pop of colour or keep it looking fresh all year round, here are the 20 best trees to plant in your garden.  20 best trees to plant Acer palmatum 'Osakazuki' The star among Japanese maples, for its truly brilliant orange-red autumn colour.