Monday, January 19, 2009

Waveney Willows

The willow trees growing on the banks of the River Waveney are a very attractive feature. In 1996 we surveyed all the bankside trees from the source of the Waveney at Redgrave down to Bungay.


We found many old willows that were collapsing and dying because they were top heavy like this one:


It is possible to prolong the life of willows and other trees by pollarding them. We do this by cutting the tree about 10 feet above the ground and allowing it to grow back. Cutting at this height means that cattle cannot nibble the new growth and kill the tree. Once a pollard is formed it can be cut again every 10 to 15 years so that it never becomes top-heavy. Pollarding continually rejuvenates the tree so it will live for much longer. Here is a pollard with a years' growth:

Our 1996 survey discovered over 250 pollards along the Upper Waveney. Several had not been pollarded for a long time and needed swift management if they were to survive. We re-pollarded the most urgent cases with funding from the Environment Agency, Here are two old but healthy willow pollards:


This year we are carrying out another survey to see how the willows are faring. Old willow pollards are important habitats for our wildlife. The trunks are usually hollow so they make good nesting places for Barn Owls - and Egyptian Geese that are spreading along the Valley. They also make good summer roosting sites for bats.

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