Adding plants and trees to your courtyard is a great way to bring the natural environment into your home. Deciduous species will allow in the winter sun while blocking the harsh summer sun. Choose trees with a good form, and of a suitable size for the location. Open feathery foliage works better against a tall solid wall. Dont forget think of textural bark, flowering qualities and interesting foliage when choosing your tree. Some of my own favourites are Crepe Myrtle, Frangipanis and Snow Pears but there are many more. This article will give you the run down on some of the trees that fit the bill for your courtyard.