Wattle fences may be one of the oldest types of fencing still in use today. They were used in England long before medieval times. Traditionally the fences are built from straight, slender, flexible suckers or saplings of the willow tree up to 1-1/2" diameter. After the leaves are stripped, the ”withies” are woven between upright wood posts. Willow is an ideal wood because it is pliable and resists splintering. Other species, such as alder, can also be used.