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The tall, thick hedges that line the sides of country lanes in the West Country are known locally as Devon Banks, as beneath the tangled stems there's a stone wall with a soil-filled centre.

Devon Bank The soil gives the wall extra weight, increasing its stability, and allows grasses and hedging plants, such as hawthorn and Dog Roses, to root and bind the stones together.

In a garden, a Devon Bank makes a superb divide and provides an opportunity to naturalise hedgerow wildflowers like primroses, daffodils, foxgloves and violas. A turf top makes it evergreen and can be cut with shears for a neat 'cattle-grazed' look or simply left to grow shaggy and long.

Alternatively, a Devon Bank makes an ideal home for rock plants such as Sweet William, arabis and aubretia which will spill down its face and look far more natural than on a conventional rockery.

And best of all, you don't need a quarry-load of stone, as even a short serpentine wall situated in a border recreates that country lane charm.

You will need....

  • Rockery / Old stone walling,
  • Top soil,
  • Leaky hosepipe,
  • Turf,
  • Foxgloves, primroses, violas and spring bulbs or alpine plants
Instructions:

Devon Bank: Step one Devon Bank: Step two Devon Bank: Step three
Step one:
Mark out the line of the wall and dig out a trench 10cm deep and 60cm wide. The width may need to be greater if the stones are large. Lay out all the stones on the ground near to where you are working so you can see their size and shape for fast selection as you build.
Step two:
Make two rows of the largest stones along the front and back of the wall, positioning them so their tops slope towards the centre of the wall. Then pack soil between them.
Step three:
Place the second row of stones over the joints of the bottom course and a few centimetres back from the top edge of the first. If necessary, wedge small stones underneath any that rock and pack with soil.
Devon Bank: Step four Devon Bank: Step five Devon Bank: Step six
Step four:
Every 2cm place a long stone across the wall to 'tie' the two faces together.
Step five:
Keep adding stones and back filling with soil. Ensure that each course sits back from the edge of the one below, so that the wall gets narrower as it gets taller.
Step six:
Once the wall is at the desired height - no more than 90cm for safety - put a leaky hosepipe down the centre to make watering easier and cover with soil.
Devon Bank: Step seven
Step seven:
Lay lengths of turf on the top of the wall and plant a few tufts into the gaps on the sides. Plant up with violas, foxgloves and primroses.