How to grow the perfect hedge: surrounding, dividing and enhancing your garden the greener way
By Andy McIndoe •
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When you think about it hedges were one of the original foundations of garden design. Sometimes a formal structure close to the house against a rural landscape. Evergreens were trimmed and trained to create patterns: parterres, knot gardens, mazes. They were used to create rooms and divisions of space, sometimes filled with informality, sometimes filled with plant treasures, sometimes filled with space. Hedges provided privacy for romance, secret trysts and they created that effect that we strive for in gardens today: the illusion that there is more beyond the field of vision.
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Hedges were the vegetable masonry that garden landscapes were built from. So how did evergreen hedges become the dreary functional phenomena they are often regarded as today? Perhaps the Leyland cypress, x Cuypressocyparis leylandii has a lot to answer for. When I was at university in the early 1970s the Leyalnd cypress was revered for its rapid growth habit. We were taught how to plant at a 45 degree angle, just like cordon fruit trees. We were taught to take cuttings. This fast growing conifer was the answer to a home-owners prayer. It promised privacy and screening in an acceptable time frame. It was cheap, fast and green. Sadly it grew faster than the gardener trimmed and trained it and ended up a monster, rather than a well groomed pet.
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So gardeners turned to the fence panel. Orange, flimsy and defining. Small gardens became smaller, with solid but warped timber boundaries forming severe backdrops behind narrow, underplanted borders. Climbers struggled to compensate and shrubs were tamed into submission with an underemployed hedge trimmer. It is time for change, time to resurrect the ultimate green wall. Time to make the hedge the ultimate garden design feature rather than a necessary evil. Breathe new life into garden boundaries and add life to your landscape.
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Evergreen hedges are more than boundary dividers. They can provide screening, shelter, a haven for wildlife, structure, all year-round interest and be a valuable part of your garden’s plant palette if you choose the right hedging plants. The choice is wide, wider than you think. Big leaves, small leaves, bright leaves, dark leaves, formal, informal, flowers, fragrance and berries.
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Secrets of success
Always choose the right hedging subject for the situation, whether shady or sunny, sheltered or exposed.
Always choose the right subject for the height of hedge you are planting. Low hedges need compact shrubs, tall hedges need more vigorous ones.
Plant good quality container grown stock for an evergreen hedge and do not plant too closely. These plants need their space: the more they compete, the worse the results in the long term. Many sources, including on-line hedging suppliers suggest planting too close together.
Hedging shrubs need water and nutrients like any other plants. Just because it’s a hedge does not mean you should starve and mistreat it
Start trimming when the plants reach half the desired height. The earlier you start to prune the lower the plants will branch and the thicker the hedge.
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A hedge is a long term garden investment. If you get it right a hedge will last a lifetime: or several! It is interesting how we recoil at the price of a single hedging plant rather than comparing the cost of a run of hedging with the equivalent run of fence panels: the hedge will win every time. Of course when it comes to appearance there is no contest. The hedge is green, beautiful and full of life; the fence…say no more.
So here are a few suggestions to consider:
Flowering Hedges
Berberis darwinii
Escallonia ‘Red Dream’
Escallonia rubra var. macrantha
Viburnum tinus ‘Spirit’
My pick: Osmanthus x burkwoodii – lovely dark green, neat foliage and fabulously fragrant white flowers in spring. Hardy and easy to grow.
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Neat, trimmed hedges
Buxus sempervirens
Taxus baccata
Thuja plicata ‘Fastigiata’
Ligustrum ovalifolium
My pick: Ilex crenata ‘Convexa’: Neat, bold foliage, deep green with wonderful texture. An excellent alternative to boxwood for a neat, dividing hedge.
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Informal, loose, hedges
Pyracantha ‘Teton’
Pittosporum tenuifolium
Griselinia littoralis ‘Variegata’
Escallonia rubra var. macrantha
My pick: Cotoneater franchettii: Arching branches, small grey-green leaves. White flowers loved by bees, orange-red berries loved by birds. Ticks all the boxes.
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Low hedges under 1 metre (3ft) in height
Buxus sempervirens
Escallonia ‘Red Dream’
Viburnum tinus ‘Spirit’
Ilex crenata ‘Convexa’
My pick: Olearia x haastii: grey stems and dark green leaves with the bonus of white daisy flowers. Great for coastal gardens and windy sites. Rarely seen so you’ll baffle the neighbours.
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Tall hedges over 2 metres (6ft) in height
Prunus laurocerasus ‘Rotundifolia’
Thuja plicata ‘Fastigiata’
Prunus lusitanica ‘Angustifolia’
Taxus baccata
My pick: Pittosporum tenuifolium Small, shining emerald leaves and black stems. Fast, pretty and a lively addition to any garden.
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Hedges in shade
Buxus sempervirens
Prunus laurocerasus ‘Etna’
Ligustrum ovalifolium
Prunus lusitanica ‘Angustifolia’
My pick: Ligustrum ovalifolium ‘Argenteum’: the creamy-white variegated privet is an attractive semi-evergreen which makes a lighter hedge; more subtle than golden privet.
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Hedges for exposed sites
Euonymus japonicus ‘Green Spire’
Taxus baccata
Escallonia rubra var. macrantha
Olearia x haastii
My pick: Elaeagnus x ebbingei Dark leaves with silver undersides but the real selling point is the small creamy flowers in autumn, inconspicuous visually but the fragrance is fabulous.
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Hedges for clay soils
Pyracantha ‘Teton’
Viburnum tinus ‘Spirit’
Taxus baccata
Thuja plicata ‘Fastigiata’
My pick: Berberis darwinii: Tiny, dark-green holly-like leaves and jewel-like orange flowers in spring. Choice, not often seen as a hedge but totally stunning.
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