Look around the tree for some shoots that have roots on them. You can plant them if there is no frost, but better to do it far from the first frost. For cuttings, you do it in early summer. Place a generous amount of any rooting powder in a gallon glass jar, place the cuttings in there and fill it with water. Place a ball of yarn on the top of the jar and place a rock over the yarn so that the cuttings do not float out. Keep the jar full of water, and watch for roots. Once you have ample amounts of roots, plant each cutting in a separate pot in good soil. When they are strong, like about a year, plant them in the garden.