Drainage is a crucial part of designing any garden space but ordinarily isn't the most exciting part and is often dismissed until the first down-pour. So rather than addressing this as an afterthought as you wave goodbye to your topsoil and plants, make it an aesthetically appealing feature of your design.
The trick is to put a bit of fun into the function. Don't think of it as just a drain, think of it as a piece of art. Gargoyle drains are a perfect early example of this.
The problem...the bush garden is built into a hillside so when it rains the water cascades across the garden causing nasty erosion.
The plan...to dig a trench which hugs the upper embankment, lay in agline and fill with railway ballast (a large form of bluemetal).
The result… a functional and sculptural element which diverts excess rainfall into other parts of the garden.
The railway ballast wraps around the embankment and screens and diverts excess rainfall into other parts of the garden.
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