Willows

A "knot" willow is a willow that several years after being planted at approximately 2 m height was corny. Then the tree is pruned every 5-7 years by taking . Newly leaked branches off the bulge at the base of the foothills is the knot which the willow gets its name . Plantations where the pollarded willow at a maximum height of 50 cm is called pilot whales .

The production of willow was performed on the pilot whales that were often located outside the large-scale to large rivers. These are the thin willow branches of the osier . Nowadays, the demand is greatly diminished. To maintain the characteristic formed by man willows of the landscape , they should be pruned , regularly now this is often done by volunteers.

In the humus -rich knot of older trees sometimes breed ducks and plants can grow . Fast-growing plants such as elder or ash can thus allow splitting. Pollard willow

A willow may be fifty years old .