Dietary fiber or roughage is the indigestible portion of food derived from plants. It has two main components: 1  Soluble fiber, which dissolves in water, is readily fermented in the colon into gases and physiologically active byproducts, and can be prebiotic and viscous.
Usage. If the willow tree is small, apply the herbicide as a foliage spray covering the willow's entire foliage until the chemical begins to drip off the leaves. For larger willow trees, cut the upper and lower branches off with a chainsaw and cut the trunk as close to the ground as possible.
Catkin. Weeping willow is a dicot species of flowering plants belonging to the willow genus (salix). It is hybrid from the Chinese species, Salix babylonica and the European species Salix alba. All three of these species live in moist soil, and are usually found close to a water source.