Commercial vanilla is always propagated by stem cuttings. In vegetative propagation, the cuttings should be taken from healthy vigorous plants and may be cut from any part of the vine. The length of the cutting is usually determined by the amount of planting material available. Cuttings, 90-100 cm in length, are usually preferable. Usually two to three leaves should be removed from the base, which is inserted into the humiclayer and mulch. With short cuttings, at least two nodes should be left above ground. The portions above ground should be tied to the support until the aerial roots have obtained a firm grasp. Because of their succulent nature, cuttings can be stored or transported for periods of up to two weeks if required.