Some trees, like the Leyland Cypress, grow up to 60 feet tall and 15 feet wide. Others, like yew trees, are smaller in height ...

Here are our top tips to do it: Enhance a sunken garden with a sense of enclosure by planting a Leyland cypress hedge. This grows at speed – up to 1m a year – and can reach 25 metres!

If you're planning ahead you can grow enough plants for a whole new hedge. All but the very slowest growing varieties of conifers will root from cuttings. If you have a Leyland cypress or another ...