There is a new trend developing in horticulture. It is called vertical gardening and it refers to growing plants on walls, either in pots attached to a vertical surface, or directly planted into a growing medium that has been affixed to a wall. Before this new concept was introduced, a vertical garden referred to landscapes planted with design elements that drew the eye upward. Often, such elements help to make a small garden appear larger by tricking the visitor into gazing upward to avoid confronting the physical limits of a small space. Other times, they simply give the eye a rest from the unintended horizontalness that sometimes overtakes a garden’s design. Here is a photo of a bold colored garden arrangement, refreshing in its verticality. In this composition, columnar evergreens introduce a vertical theme echoed by the spikes of the orange perennial, Kniphofia. The image, used here with written permission, was taken by Jordan Jackson who garden blogs at Metropolitan Gardens. The photo was taken in August 2009 in Regent’s Park at St Andrews Gate. in London. UK.