Proceed to the lavender cutting in late summer or early autumn, after pruning the flowers. Young twigs are chosen, with no excessive diameter, vigorous and well developed, and are cut at about 10-15 cm of height. In small pots, or boxes, filled with a compound made of sand and peat in equal parts, small holes are prepared for the cuttings, and water is carefully watered. The twigs are stripped of the leaves in the basal part, so as to discover the wood, which must be immersed in the powder of the rooting hormone. The cuttings are now inserted into the ground and placed in a sheltered place throughout the winter. A small covered and sheltered greenhouse will be perfect.
The care of the cuttings
During the development of the cuttings, and the production of the new root system, the humidity of the environment and of the soil is of fundamental importance: the cuttings are not yet able to absorb water from the soil and transpiration forces the plants to disperse moisture in the soil. ‘air. If you don’t water, the young cuttings can wither and die, even in just one day too hot and dry. For this, we proceed to bury the cuttings with the well-moist soil, and this humidity is maintained by covering the pots with plastic material. Over the next few days, the soil will continue to be controlled and watered whenever it is dry. however, avoid over-soaking it. As soon as the cuttings present new shoots, it is possible to remove the plastic film that covers them and to reduce watering. When the weather is very cold, we water only the little that is enough to prevent the soil from becoming completely dry; this operation is carried out only once every 7-10 days.
A few tricks
Although lavender is very fond of the sun, during the development of the root cuttings it is advisable to preserve the vessels from the direct and warm rays of the sun; this to keep the soil slightly damp and to avoid overheating the soil too much. Then choose a semi-shaken position, and move the containers to a sheltered place, such as under an unheated tunnel greenhouse, upon arrival of cold. Avoid bringing the vases indoors, as domestic heating makes the climate excessively hot and dry. When you pick the small branches for the cuttings, avoid the small or little developed branches, and choose luxuriant ones, cutting them in the area that has healthy and large leaves. Use clean and sharp tools, because a frayed cut can cause the development of rot, which can be very harmful to the plant from which you cut the cuttings. Lavender tends to root very easily, so you can try to produce cuttings even in spring or summer, and also place them directly in your home.
Why prepare cuttings
Lavender also propagates by seed, but cuttings are much preferred, especially in the case of Lavandula spicata, officinalis, or nana; this is because these plants root from cuttings with great ease, and it is much simpler and faster to obtain young plants in this way. Other species of lavender, such as Lavandula stoechas, tend not to root so easily and therefore prefer to propagate them by seed. Many hybrid varieties are available on the market; if propagated by seed, the hybrids do not guarantee us identical daughter plants in all respects to the mother plant, because they carry with them characteristics of every plant that entered the hybridization process. Instead through the cutting, it is possible to produce plants completely identical to the mother plant, thus maintaining particular colours of the flowers.