We decided to plant a windbreak in front of the polytunnel and chose Populus tremula 'Erecta' - aspen - for the job. This variety originates in Sweden and is suited to this latitude. It grows quickly and vigorously and is happy in any kind of soil: clay, sand, chalk even. Our are in thick clay - but we dug deep holes with the Avant and filled them with earth. The trees are also ornamental: the leaves tremble or rustle in the wind creating a shimmering effect. In the spring, aspen carry catkins and the leaves turn golden yellow in the autumn. We planted them 2.5 metres apart which will create a hedge in a few years time. The maximum height will be about 12 metres. The trees will filter the wind rather than create a barrier.
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