Christopher Cattle
A retired lecturer in furniture design, in the mid eighties I started to wonder what contribution I could make to the 'save the planet ' debate. Settling on the problem of our seemingly ever increasing demand for energy, I decided to see what one could do to reduce the amount used to make furniture. An early decision was to concentrate on the use of wood, an attractive and popular material, and biodegradable.
I was aware of the annual races for solar powered vehicles run in Australia, which attracted such elaborate and complex vehicles. Suddenly it struck me that of course tree growth is also solar powered! The energy we use to make furniture is simply that required to convert trees into the forms we use for our chairs and tables. If only the trees could be persuaded to grow into the right shapes in the first place . . . .
But people have been training and grafting trees to shape since we know not when, so no new skills are required. To grow furniture would simply involve using well known techniques for a different purpose.
To prove that it could be done however, I would have to do it myself, so I designed the simplest item of furniture I could devise, a three legged stool. I also devised a simple plywood frame or jig, on which to train the saplings as they grew. (Having practised as a designer of furniture for industrial production for the first half of my professional career, I was having to start from scratch.) In 1995 I approached the School of Plant Sciences at the University of Reading with my scheme. They rented me a suitable small plot of land and with their help, I planted and grew my first batch of stools. Five years later I harvested my first grown stool frame.
Having shown that it could be done, where was I to go from there. Should I go into business and sell them?
I decided that the outcome nearest to my original intention was rather to publicise the idea, and to enable others to grow such stools. In this way I hope to persuade people - particularly the younger generation - to change their mindset, and realise that it is possible to achieve useful and practical results simply by the intelligent use of natural processes.
Over recent years I have promoted the idea in a variety of ways. The experiment originally received wide coverage in the press both in Britain and abroad. Each year I attend several relevant public events in Britain, from exhibitions in London to environmental gatherings in Scotland. The stools were exhibited at Expo 2005 in Japan and more recently in Paris. I have been interviewed for the radio in the UK, USA and Canada.
I have a website ( www.grown-furniture.co.uk ) and anyone can buy the flat pack plywood jig and instructions. Stool growing has proved popular for young families and the kits are frequently in demand as Christmas presents for retired parents. (You can be sure they haven't got one of these!) All you need is the enthusiasm, the patience, and a local supplier of suitable 'whips' or young saplings. Nature does most of the work, and as she's been doing it for millions of years she's pretty good at it.
I recommend Sycamore as a suitable species, as it tends to grow and graft well. The whips are normally sold in bundles of twenty five, so you have a good chance to select three (or multiples of three) which are evenly matched, and slim enough to be bent and trained well. They should preferably be no thicker than a traditional wooden pencil. The kit comes with a planting guide which enables you to plant your saplings accurately, so that they fit snugly to the corners of the jig. With gentle persuasion the stems can be carefully bent to shape and secured to the jig with plant ties. If you can plant in November or December it gives the roots a chance to establish themselves before the Spring, but any time up to the end of February has proved satisfactory.
By about the third year you should be able to make the lower grafts where the stems touch. Cutting away the bark and the green cambial layer beneath it at the point of contact , you must hold them gently but firmly together for a few weeks. This can be done by binding or drilling through and inserting a rivet of some sort. If the graft bonds well, the sap will start to take the shortest route between the leaves and the roots, and each 'leg' - the lower half of which consists of one tree with the upper half of its neighbour - will start to grow as one, while the horizontal sections - joining the legs at their mid point and becoming the 'rails' - will cease to grow and remain at their existing size.
Although it will probably be about five years before the frame grows to its required size, the time you spend tending it will be minimal. I expect to spend less than five minutes on each frame every three weeks during the growing season.
Before 'harvesting' your frame, you should decide whether you prefer the 'rustic' look, by retaining the bark, or the perhaps a more elegant look by stripping it off. If you choose rustic you should harvest in the winter when the tree is dormant . If you harvest when the tree is actively growing, it is quite easy to strip off the bark. The thickness of the legs is such that any splitting as the wood dries out shouldn't be a problem, but it should be left to 'season' naturally, out of doors but under cover for about a further year. You can then give it a top of your choice and sit on it!
GROWING ONE'S OWN STOOL
