This is a short description of the process of rooting grapevines:
-The recommended time to take hardwood cuttings is anywhere between November and February, when the plant is still dormant.
-Prepare a small pot for rooting the cutting by filling with equal amounts of sand, peat and perlite. You can also use fine gravel for rooting your cuttings.
-Remove all the lateral shoots and any dormant buds from the lower half of each cutting.
-Plant at a depth of about 2 to 3 inches in the rooting medium, firm the soil around the cuttings and water well.
-Place the pot in a warm, bright area, but make sure that they are out of direct sunlight. Keep the soil moist but not waterlogged.
-Transplant the new plants outdoors when the weather warms. April and May are generally good times to plant rooted grapevine cuttings.
I was able to root few small cuttings, that greench generously offer me, in 3/4 weeks with this easy steps. It was easier than I thought, rotting this 2cm cuttings with just one bud. Just keep them on hight humidity( 75%), controlled temperature (15-20 c) on a sunny window.
hopefully I can taste some grapes in some years!