how can I make vine cuttings
the vine cuttings they are practiced by taking from the plant branches that are at least 8-10 months old, already partially or completely lignified, therefore the best period is generally late winter, January-February, or in late autumn, September-October.
they take beautiful healthy and vigorous branches; if you want you can use the branches that are removed from the plant at the time of pruning, you need branches of at least 30-40 cm, with at least three beautiful large and vigorous buds, or three internodes. Cut the twig at the base, dividing the lower bud (or the lowest internode) in half; if you are concerned about not being able to cut the internode in half, cut the twig just below this internode; then bury the branch, with a bud at ground level, and water it whenever the soil is dry. Such cuttings are often placed on the ground already at home, but, it depends on how many you need to do. Often a particular operation is also practiced, that is, you take the twig and twist it in the lower part, where there is the gem cut in half, until you feel that the wood stops resisting, and then goes underground.
If you want more likely that your cuttings take root you can immerse them in the rooting hormone, before burying them; the rooting hormone is a powder that is easily found in well-stocked nurseries and garden centers, it stimulates the production of roots even from already hard and well-lignified wood.
On the vines often, instead of such, at the end of summer propagation by layering or offshoot is practiced, that is, take a vigorous branch and bring it to the ground, burying it in part, and wait for it to take root.
I remind you that a parasite, called phylloxera, is very common in Europe, very harmful for vines; in the vineyards all grafted vines are grown, where the rootstock is not attacked by this parasite, as it is practically immune; when you produce a cutting, an air layering or an offshoot, it gets a flat that is almost certainly sensitive to phylloxera, and therefore you will get a screw that will be short-lived. In addition to this, if you place one of your cuttings near a vineyard, if your plant will be attacked by phylloxera it is likely that the parasite will also spread on other nearby plants, and therefore you will ruin the rest of the vineyard.
In general, to prevent a vine plant from living for only a few years, they are planted already grafted, certified plants, free from diseases of any kind, which will surely give us their fruits for the long decades to come.