Vertical gardens emulate nature at its best,
reflecting the adaptive nature of plants.
Epiphytic flora demonstrate the adaptive strategies employed by plants to survive in novel and often harsh environments, including that of the vertical plane. These epiphytes do not require soil as a medium for growth, rather they have mastered the concept of growing on existing structures (trees, rocks, logs etc.) to form natural vertical gardens. This was accomplished long before humans attempted to plant on vertical structures.
The concept of planting vertically has been developed recently into a more intricate technology to help supply the need for green space in urban environments. These vertical gardens, otherwise known as green walls or living walls, are complex biological systems adorned with living plants, which offer options for vertical planting in a myriad of environments. Similar to green roofs, vertical gardens provide additional options for planting in nonconventional spaces.