A woodland garden design can be achieved in gardens which already have mature trees that cast considerable shade. The types of trees will have an influence over the planting that can be incorporated into the garden, as will the amount of shade and whether the tress are deciduous or not. For example areas of soil under Pine trees will typically be acidic as a result the decaying pines needles, and will be in constant shade throughout the year as a Pine tree is evergreen.
Therefore any garden design should restrict the planting palette to those that can tolerate the relevant conditions. Additionally is important to create a natural flow to the garden which can be achieved by planting any perennials or bulbs in drifts, and creating informal paths which meander through the garden.