| Cutting (plant) |
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Many vegetative parts of a plant can be used. The most common methods are # Stem cuttings, where a piece of stem is part buried in the soil, including at least one leaf node. It produces new roots, usually at the node. # Root cuttings, where a section of root is buried just below the soil surface, and produces new shoots. # Leaf cuttings, where a leaf is placed on moist soil. These have to develop both new stems, and new roots. Some leaves will produce one plant at the base of the leaf. In some species, multiple new plants can be produced at many places on one leaf, and these can be induced by cutting the leaf veins. Some species, such as Blackberry and Pelargoniums can be 'struck' simply by sticking into moist ground. Most species, however, require humid, warm, partially shaded conditions to strike. Particularly difficult species may need to have cool air above and warm soil. Several compounds are associated with, and some promote the formation of roots, the Auxins . Among the commonly used ones is Indole-3-butyric Acid , or IBA, used as a powder, solution or gel. This is applied either to the base of the cutting, or as a foliar spray. |
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