Sunday, October 8, 2017

Willow In Perspective

Baskets can be woven with any one of hundreds of plant species, depending on whatever was available. In more tropical climates people used cane or raffia, while in temperate areas like Europe a wide variety of branches and plants were available: dogwood, privet, larch, blackthorn and chestnut branches; broom, jasmine and periwinkle twigs; elm, and linden shoots; ivy, clematis, honeysuckle and rose vines; rushes and other reeds, and straw.
Perhaps the most popular, however, was willow -- sallies or silver-sticks here in Ireland, osiers in Britain, vikker in Old Norse, the last of which became our word “wicker.” They are highly pliable when young or wet, lightweight and tough when dried, and grow so quickly that a new crop of branches up to three metres long can be harvested each year. As one of the earliest trees to grow back after an old tree falls and leaves a gap of sunlight in the forest, or after a forest fire razes an area, they are perhaps the tree closest to a weed in behaviour.
Their roots spread rapidly under the surface of the soil, making them an ideal crop to halt erosion. Their fast growth makes an excellent windbreak, the basis of most hedgerows, and makes them particularly useful in our era for sequestering carbon and combating climate change. In addition, the bark of the white willow (Salix alba) can be boiled to form acetecylic acid, or aspirin.
Cleaning the soil
In addition, the common variety Salix viminalis or “basket willow,” has been shown to be a hyper-accumulator of heavy metals. Many plants help “clean” the soil by soaking up disproportionate levels of normally toxic materials, either as a quirk of their metabolism or as a way of protecting themselves against predators by making themselves poisonous. Many plants soak up only a single toxin, others only a few; Viminalis, it turned out, soaked up a broad range, including lead, cadmium, mercury, chromium, zinc, fossil-fuel hydrocarbons, uranium, selenium, potassium ferro-cyanide and silver. (8) (9) (10)
Many hardwood trees can be coppiced, cut through at the base, or pollarded, cut at head-height, and regrow shoots on a five-to-twenty-year time scale. Willows, however, do not need to grow to maturity, and continue to thicken at the base and grow a fresh crop of shoots each year. Basket-weavers here harvested willow as a winter ritual – ten tonnes to the acre – from fields of large century-old stumps that had never been mature trees. (11)
Once the willow is cut it could be dried with the bark on, or the bark could be stripped off. Stripping was a tedious task but it made the willow easier to quickly prepare and use, reduced the risk of decay, and it gave the willow a valued white colour. To strip the bark a large willow branch was cut partway down its length, with metal strips attached to the inside of the cut; the weaver could hold the branch between their legs and use it as we would use a wire-stripping tool to remove insulation. When cuttings were too thick to manipulate, a special tool called a cleve was used to cut them three ways down their length.
Withies were typically dried for several months and kept indefinitely before soaking again for use. Willow can be woven straight from the tree, but as it dries it loosens and the weave shifts and rattles, which is seldom desirable. To a novice, preparing the materials presents as much of a challenge as the actual weaving, as the willow must be dried but re-soaked, kept wet without rotting, and used before becoming dry and brittle again..... Click here to go to source


Willow Species ... CLICK HERE

VIDEOS
ABOUT Salix viminalis - Common Osier - Basket Willow ... CLICK HERE
https://www.youtube.com/watch?v=fp-rHATIMeE ... Planting willow
https://www.youtube.com/watch?v=MeYrhus2lwU ... About willow growing
https://www.youtube.com/watch?v=O4pnrJ5QW-U ... Growing willow
https://www.youtube.com/watch?v=nYsNIIWkIe4 ... Growing willow

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