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.
The European crack willow (Salix fragilis) earned its name from the weak, cracking bark that frequently causes the tree to lose its branches. Hardy in USDA zones 2 to 9, this weeping willow variety reaches 45- to 70-foot tall with a similar spread.he European crack willow (Salix fragilis) earned its name from the weak, cracking bark that frequently causes the tree to lose its branches. Hardy in USDA zones 2 to 9, this weeping willow variety reaches 45- to 70-foot tall with a similar spread.