When & How Should I Take Cuttings Of Variegated Holly Trees

Question

I have a source to be able to take the above cuttings from my daughters Trees at a local farm,

Answer 1

Take tip cuttings that are about 5 inches long in late summer or early fall when the stems are still flexible. You can treat them with a rooting hormone to increase the chance of rooting. Insert the cuttings in moist potting soil. They need a humid environment so enclose the cuttings in a plastic bag.

Here is more:
https://www.gardeningknowhow.com/garden-how-to/propagation/cuttings/semi-hardwood-propagation.htm