Pushing the boundaries with hedges over garden walls

Pushing the boundaries with hedges over garden walls

Hannah Stephenson reveals the benefits of swapping garden walls and fences for hedges.

If you're looking for the perfect boundary for your garden and want to save the planet, hedges are the most eco-friendly candidates.

They’re not just a barrier against nosy neighbours, but also reduce risks of flooding, capture pollutants and act as a sound barrier, as well as supporting wildlife.

CAPTURE POLLUTION

Creative hedge-planting can reduce traffic pollutants. Look for large, densely canopied plants with smaller ovate, hairy, scaly or rough leaves, that will trap particles emitted from roads and industry. Good options include cotoneaster and western red cedar (Thuja plicata).

NOISE REDUCTION

Hedges can reduce noise as well as pollution. Wide, tall and multi-layered hedges, ideally evergreen for year-round impact, perform this function best. Desirable plantings include English yew (Taxus baccata), western red cedar (Thuja plicata), Japanese barberry (Berberis thunbergii), cherry laurel (Prunus laurocerasus) and holly (Ilex aquifolium).

FLOODING FIXReduce the risk of flooding. Plants with a large leaf area, higher transpiration rates — meaning they take up water via their roots quickly — and evergreen canopies are associated with greater rainfall retention. Hawthorn (Crataegus monogyna) and Forsythia intermedia when in leaf, ligustrum (privet) and cotoneaster are all top recommendations.SUPPORT WILDLIFE

Plant a mixture of species to extend flowering or fruiting periods, and use a range of plant species to provide a more diverse structure, that creates more niches for nesting.

Hawthorn (Crataegus monogyna), beech (Fagus sylvatica), Rosa rugosa, pyracantha cultivars, ligustrum and yew (Taxus baccata) all make for attractive and practical habitats for wildlife.

DEEP APPEAL

Plant hedges at the correct depth. Hedge plants are available grown in a pot or, now, as bare root plants that are usually delivered by mail order.

For pot-grown plants, dig a hole twice the width of the container, but the same depth. Remove the pot and place in the hole.

Mix about a quarter of a bucketful of well-rotted compost or manure with the soil from the hole and then firm back around the roots.

For bare root, the simplest planting is to put your spade into the ground until your foot is level with the soil. Wiggle the spade back and forth to make a V-shape.

Place the roots of your hedging plant in the hole and then use the heel of your boot/shoe to firm back the soil.

If the soil is poor, then dig out a trench to a spade’s depth and incorporate one bucketful of well-rotted compost or manure to the soil per metre of trench, before planting.

DORMANT SEASON

The widest range of hedging plants is available over winter, when there are no leaves on deciduous plants, and they’re easiest to transplant.

For deciduous plants, the best time to plant is November to March. For evergreens, it’s November or March.

For both, just avoid any periods when the soil is waterlogged or frozen to a depth of six inches.

GROWTH RATE

Consider how fast your hedge will grow. Faster-growing hedges need more maintenance — typically they’ll grow to 6ft (1.8m) in three to four years, but will then need two or three cuts a year. Slow-growing hedges need less maintenance, taking five to seven years to reach 6ft (1.8m) but will only need one cut a year.

Privet hedges grow quickly, so buy small and let them establish. You can buy larger specimens of slow-growing hedging plants, which cost a lot more.

Slower-growing specimens include yew, hornbeam, beech and holly, while faster growing types include western red cedar, privet and hawthorn.

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