Geranium is a genus of 422 species of flowering annual, biennial and perennial plants known commonly as cranesbills. They are found throughout temperate regions of the world and in eastern part of the Mediterranean region. The name ‘cranesbill’ is derived from their appearance of the fruit capsule of some species, which is shaped like a long unsprung column and like the bill of a crane. It is a diverse group containing types that grow in a range of conditions in full sun. They are easy to maintain and can multiply in numbers readily.
Stem-cutting is another common asexual propagation technique, suited well to herbs and house plants. It involves taking a section of stem from a parent plant and manipulating it to create a new plant. Since the reproduction is asexual, the new plant is genetically identical to the parent and is often referred to as a clone.
Stems that are attached to their parent plant are capable of forming roots on coming in contact with a rooting medium. Layering exploits this property of stems. It involves development of roots on a stem while the stem is still attached to its parent plant. A layer is the rooted stem following detachment from the parent plant.