This is a method of propagation, by bending down a branch, and fastening
it under the soil, leaving the upper end projecting, until it takes
root. Cut half way through the branch so as to raise the top, and fasten
it at the point where it is cut, in a trench, with a stick thrust into
the ground over it nearly horizontally, or with a stick having a hook
made by cutting off a limb. Cover well with soil, and mulch it, and
water when dry. This done in the spring, in August the branch will be
well rooted, and may be cut away from the parent stalk. This is
important in any tree or shrub (like the snowball), difficult to
propagate by slips or grafting.