The Poetry Of Trees. Although there is no definitive definition we all know what they are. At their most magisterial they can reach hundreds of feet into the air and be thousands of years old. But for many the visual structure they bring to our landscape in all their various heights and colours; their contribution to the seasons - stark branches, vivid leaves at birth and death is how we relate to them. For the poets here in this collection trees are a source of inspiration and give us much to contemplate.