Growing to heights of 35 to 45 feet in USDA hardiness zones 2 through 9A, weeping willows (Salix spp) are easily identifiable by their downward-flowing branches. The round-shaped crown often reaches widths equal to the tree's height. Seen often near water, a common misconception is the weeping willow requires very moist soil conditions to thrive, according to the Forest Service Department of Agriculture. With proper irrigation, weeping willows can live in areas not located on waterfronts or shorelines. To propagate weeping willows, root a branch from a tree that is at least one year old.
Obtain a one-year old healthy willow branch cutting. If purchasing the cutting from a nursery, leave the cutting in the original packing material and place in the refrigerator upon arrival.
Open the drainage holes in the bottom of a 10-inch pot. Fill the pot 3/4 full with a mixture of equal parts potting soil, peat and sand.
Dig a 3- to 4-inch deep hole in the center of the potting mixture to plant the willow branch.
Sterilize a sharp cutting blade by spraying disinfectant spray on all sides of the blade.
Pour a small amount of rooting hormone powder into a shallow bowl.
Remove the willow branch from the refrigerator. Remove all packing.
Place the blade at a 45-degree angle against the bottom part of the willow branch. Remove 1/4 of the branch with the sterile knife.
Dip the cut end immediately in the rooting hormone powder, covering the bottom quarter of the branch in powder.
Place the willow branch in the hole. Press the potting soil mixture around the branch to provide support.
Wet the soil until water flows out of the drainage holes. Allow the soil to drain for thirty minutes. Place the pot in a partially shaded window.
Water whenever the top 2 inches of soil become dry to the touch.