because that's how nature works.
The willow tree leaves do work just as good as the bark to make Aspirin. The leaves and bark are often combined to make medicine.
Yes, desert willow [Chilopsis linearis] loses leaves during the winter. Its bloom is longlasting, from spring through fall. During that time, its willow like leaves provide an interesting backdrop to the bloom. But the desert willow is a deciduous tree whose leaves start dropping in November.
don't you mean how in stead of who?? .............anyways you get part of the ingredients from the bark and leaves of the willow tree.
Yes, the weeping willow drops its leaves in Autumn.
A bay willow is a species of willow tree native to northern Europe and northern Asia, with leaves which resemble laurel.
Orchid tree usually sheds its leaves in winter though some species do not.
A willow tree typically consists of roots, trunk, branches, leaves, flowers, and sometimes fruit or seeds. The long, slender branches of a willow tree are a distinctive feature, known for their graceful drooping appearance.
evergreen tree leaves
willow tree
Deciduous Tree.
Roots, bark, phloem, cambium, xylem, and leaves.
Dormant.