Hedgerows: Vital Allies We Too Often Cut Down

Echoes of the Living World · Landscapes

Hedgerows

Vital allies we too often cut down

In one minute

A traditional hedgerow is far more than a boundary between plots. It slows the wind, helps retain water and soil, provides food and shelter for many species and connects habitats with one another. Its maintenance needs careful planning, particularly during the bird breeding season.

In this feature

1. Understanding what a hedgerow does
2. Discovering the species it shelters
3. Cutting at the right time
4. Creating a diverse hedgerow
5. Maintaining without impoverishing
6. Frequently asked questions

We tend to think of a hedge first as something that separates two pieces of land. Yet when it is old, diverse and wide enough, it becomes a landscape in its own right.

Birds nest there, insects find flowers, hedgehogs use it as a passageway and its roots slow surface runoff. Removing it in a few hours can mean destroying a habitat that took decades to develop.

A living structure

What does a traditional hedgerow actually do?

Hedgerows have long marked field boundaries, contained livestock and provided wood, fruit or fodder. They also provide less visible benefits.

• they slow the wind without forming a completely impermeable wall;
• they reduce erosion and encourage water infiltration;
• they store carbon in wood and soil;
• they provide shade and soften some temperature extremes;
• they connect woodland, meadows, ponds and orchards.

An ecological corridor

What a hedgerow really shelters

A diverse hedgerow offers different resources throughout the seasons. Flowers feed pollinators, fruits benefit birds and small mammals, while hollow wood, ivy, fallen leaves and banks create refuges.

For a hedgehog, a hedge can become a route. For a tit, a nesting place. For a bat, a line to follow while travelling and hunting. For many insects, it serves as both shelter and pantry.

Nesting season

Can a hedgerow be cut in spring?

There is no single nationwide ban in France applying in exactly the same way to every private individual throughout the entire bird breeding season. However, destroying nests, eggs and breeding sites of protected species is prohibited.

For farmers subject to the conditionality rules of the Common Agricultural Policy, hedge and tree maintenance is prohibited from 16 March to 15 August, except where exemptions provided for in the rules apply.

In every case, major work is best carried out in autumn or winter, outside freezing conditions and after the hedge has been inspected. A genuine safety emergency may require a different response, but it does not remove the need to check for an occupied nest.

Planting for the long term

Why mix species?

A hedge made up of varied local species spreads flowering and fruiting across the seasons, is more resilient to some diseases and provides more resources for wildlife than a uniform line of a single species.

Depending on the soil, climate and landscape, suitable species may include hawthorn, blackthorn, hazel, dogwood, dog rose, elder, spindle, viburnum, field maple or hornbeam.

This list is not universal: species should be chosen according to the region, site conditions and local regulations.

Maintaining without impoverishing

A hedgerow is not a green wall

Repeatedly trimming every side and the top can weaken the hedge’s structure and reduce its diversity. The French Biodiversity Agency recommends interventions that meet a real need rather than systematic cutting.

Where space allows, a living hedgerow retains several layers: trees, shrubs, climbers, occasional brambles and a grassy margin. Managing it in sections also allows refuges to remain while other parts regenerate.

Key points

• A diverse hedgerow is a habitat, not merely a fence.
• It protects soil, slows the wind and connects habitats.
• Before any cutting, check for occupied nests.
• The 16 March to 15 August restriction applies specifically to farmers covered by CAP conditionality rules.
• Managing a hedge in sections preserves more refuges than cutting it uniformly.

Frequently asked questions

Common questions about hedgerows

Do hedgerows attract pests?

They mainly support a wide range of species, including natural predators that can help regulate insects and small rodents. Is a single-species hedge useful?

It can provide shelter, but a diverse hedge generally offers more food and is more resilient to disease and climatic stress. Does a hedgerow need cutting every year?

Not necessarily. Frequency depends on its purpose, the species present, available space and safety requirements. Intervention should not be automatic. Can ivy be left in a hedgerow?

Ivy provides nectar, fruit and shelter. It can be retained where it does not create a particular problem for the structure of the hedge or the way the site is used. Why keep a grassy margin at the base?

This strip of vegetation protects the soil and provides flowers, seeds and refuges for many species. Can a hedgerow reduce erosion?

Yes. Its roots stabilise the soil and its structure slows runoff, particularly when it is positioned appropriately for the contours of the land.

Astrée’s perspective

A hedgerow never completely separates two pieces of land. Beneath its branches animals pass, seeds travel, and shade, wind and water move through. It is a boundary that connects.

Sources and further reading

• French Biodiversity Agency — sustainable hedgerow management and creation
• TéléPAC — 2026 conditionality rules and hedge-maintenance period

Continue the feature

In the Chevaliers’ Realm

A practical observation sheet helps identify the different layers of a hedgerow and plan maintenance without erasing the refuges it contains.