Inarch is a botanical term used to describe the process of grafting a young plant shoot into the bark of a mature tree or trunk. It is also known as approach grafting, and it involves growing a new plant from an already established root system. Some synonyms for the term inarch are approach grafting, bridge grafting, and bridge budding. Other related terms include side grafting, cleft grafting, and whip grafting. Inarch is an effective technique for propagating plants, especially for species that have difficulty growing from cuttings. This technique has been used for centuries by horticulturists and gardeners to propagate a wide range of plants.