Why native hedgerows matter in Ireland
Hedgerows are a defining feature of the Irish countryside and a significant habitat in their own right. A mixed native hedge gives birds nesting sites, provides pollen and nectar in spring, supplies berries and nuts in autumn and winter, and acts as a corridor along which small mammals, bats and insects can move. In a garden, a native hedge can do the same on a smaller scale while also working as a boundary, windbreak and screen.
Because they are mixed, native hedges are also more resilient than a single-species hedge: if one species struggles, the others carry on.
Core native hedgerow species
These are widely used and generally regarded as native to Ireland:
- Hawthorn (Crataegus monogyna). The backbone of many Irish hedges. White blossom in May, red haws in autumn, and dense thorny growth good for nesting birds.
- Blackthorn (Prunus spinosa). Flowers early, before the leaves, which helps early insects. Produces sloes in autumn. It can sucker and spread, so it needs room.
- Hazel (Corylus avellana). Catkins in late winter, nuts in autumn, and it responds well to cutting back.
- Holly (Ilex aquifolium). Evergreen cover in winter, with berries on female plants. Plants are either male or female, so berries need both nearby.
- Guelder rose (Viburnum opulus). Flat white flowers and red berries; does best in moist soil.
- Spindle (Euonymus europaeus). Pink-orange fruit and good autumn color; best in a larger mixed hedge.
- Dog rose (Rosa canina) and bramble (Rubus fruticosus agg.). Flowers for pollinators, hips and blackberries for birds, though bramble needs managing.
- Elder (Sambucus nigra). Quick growing, with flowers and berries that many insects and birds use.
- Crab apple (Malus sylvestris). Spring blossom and small fruit for birds.
- Willow (Salix species). Fast and suited to damp ground.
- Honeysuckle (Lonicera periclymenum) and ivy (Hedera helix). Climbers that weave through a hedge and add nectar, cover and berries.
Ash is also a traditional hedgerow tree, but ash dieback disease is widespread in Ireland, so it is not recommended for new planting. Check the guidance of Teagasc or the Department of Agriculture if you are unsure.
What’s the fastest-growing hedge plant?
Among natives, elder and willow tend to grow quickly, with hawthorn and blackthorn growing at a moderate pace. Faster growth is not always better: quick-growing plants may need more cutting, and a variety of species gives wildlife more benefit. If you need a screen quickly, planting slightly larger plants or mixing in fast species such as elder or hazel with slower hawthorn and holly is a common approach.
How to plant a native hedge
- When. Bare-root plants are generally planted between late autumn and early spring, while the plants are dormant and the ground isn’t frozen or waterlogged. They are cheaper than potted plants, though the planting window is shorter.
- Spacing. A common approach is a staggered double row, using roughly four to five plants per metre overall. Follow the supplier’s advice for your chosen species.
- Mix. Use a majority of hawthorn or blackthorn with smaller proportions of hazel, holly, guelder rose and others, depending on your soil.
- Preparation. Clear weeds along the line, add organic matter if the soil is poor, and use mulch or a weed membrane to reduce competition.
- Aftercare. Water in dry spells during the first year or two and replace failed plants.
- Sourcing. Buy plants grown in Ireland from reputable nurseries where possible. Local provenance generally suits local conditions and avoids importing plant diseases.
Types of hedging and what is different about a hedgerow
Hedges are often described as formal (regularly clipped and uniform), informal (a looser, more natural shape), and mixed native hedgerows (several species, allowed to grow taller and wider). Wildlife value is highest in the wider, more varied and less frequently cut hedgerow. If space allows, aim for a hedge of at least a metre or two in width and let some stems grow tall.
Hedge laying
Hedge laying is a traditional craft in which stems are partly cut near the base and bent over, so they continue growing while forming a dense, stock-proof barrier. It is valued because it thickens the base of the hedge, extends the life of old hedges that have become thin and gappy, and keeps the hedge as a living feature rather than letting it become a line of trees. Regional styles differ. It is usually done in winter while the plants are dormant. If you want to try it, courses and local hedge-laying groups can be a good start, since it involves sharp tools and heavy work.
Cutting and legal timing
Hedge cutting in Ireland is generally restricted during the bird nesting season, with the Wildlife Act prohibiting cutting or burning of hedges and vegetation between 1 March and 31 August, subject to certain exceptions. Rules can be amended, so check the latest guidance from the National Parks and Wildlife Service before you cut. Cutting in late winter is not ideal for wildlife either, as it removes berries birds still need, so some people trim only a portion of the hedge each year and cut on a rotation.
Choosing plants for your site
- Exposed or coastal. Blackthorn, hawthorn and willow cope reasonably well with wind.
- Wet ground. Guelder rose, alder, and willow.
- Dry or free-draining soil. Hawthorn, holly and dog rose.
- Small gardens. Hazel and holly can be kept tidy with regular trimming, and a narrower mix of hawthorn, hazel and dog rose may be enough.
Related reading
If you are interested in wildlife-friendly planting in other regions, see our Mediterranean native plants guide for a very different, drought-adapted approach.