Pampas grass in France: why the ornamental grass is banned

Standfirst: In many gardens, this tall ornamental grass looks harmless and decorative.

Yet its soft plumes conceal a problem that could prove expensive.

It appears everywhere: on Instagram, in interiors magazines and along roadsides, with its striking cream-coloured plumes. What many amateur gardeners do not realise is that living pampas grass is now on a prohibited-species list in France because it displaces natural habitats and poses risks to people and the environment. This also raises a question in Germany: just how dangerous is this fashionable plant, and what does it mean for private gardens?

What makes pampas grass so problematic

Pampas grass (Cortaderia selloana) originally comes from South America. In an ornamental garden, it quickly forms huge clumps more than 2 metres tall and similarly wide, which are dense and difficult to access.

Its propagation is the real issue. Every individual flower plume can produce hundreds of thousands of tiny seeds. These seeds are exceptionally light, remain viable for a long time and can be carried for kilometres by the wind. New plants can therefore emerge on roadsides, wasteland, dunes or embankments, often far from the garden where they originated.

Pampas grass is regarded in many European regions as an invasive, non-native species that displaces indigenous plants and visibly changes landscapes.

Once the grass becomes established, it creates a virtual carpet of dense clumps. There is barely any light or space left for other plants. As a result, the region’s characteristic vegetation gradually disappears, along with the animals that depend on it, from insects and birds to small mammals.

Why France placed pampas grass on its prohibited list

Since 2023, France has included Cortaderia selloana on its list of prohibited invasive species. The measure is based on national environmental legislation and EU rules designed to limit invasive non-native species. This was not an arbitrary decision, but a response to practical experience: particularly in coastal areas, the grass has spread extensively, overrunning dunes, embankments and wetlands.

Alongside the displacement of native species, three further concerns are relevant:

• Risk for allergy sufferers: Its pollen can trigger or worsen symptoms in sensitive people.
• Fire risk: Dry clumps burn like tinder and can fuel fires near homes or roads.
• Risk of injury: Its leaves are razor-sharp, and cuts to hands and forearms are common.

The French government therefore acted not only for ecological reasons, but also because of safety and health concerns.

What the French ban on pampas grass covers

France applies a strict set of rules. The following restrictions apply to living pampas grass:

Action	Status in France (living plant)
Importing new plants	prohibited
Keeping or planting it in a garden	prohibited
Selling or giving it away	prohibited
Transporting living plants or root sections	prohibited
Dried decorative plumes (without living material)	permitted

Breaches can result in substantial penalties, aimed primarily at retailers, importers and professional businesses. Private gardens are more likely to attract attention if new plants have been planted or if the grass spreads into particularly sensitive natural areas.

Do you need to remove pampas grass from your own garden?

France does not currently require every established plant to be removed immediately. Anyone who has had a clump in their garden for years should, above all, make sure that it cannot spread further.

This means in particular:

• Cutting off flower plumes before the seeds ripen.
• Not dividing the clump, replanting it or passing it on to anyone else.
• Wearing protective gloves and sturdy clothing when cutting it back, as the leaves can cut deeply into skin.

Removed plant material must not be put on the compost heap, even if it has been shredded. Seeds or root sections may survive there and grow again later. Disposal through the local recycling centre or green-waste collection point is recommended, ideally in securely sealed bags.

Anyone who keeps pampas grass takes on responsibility: neither a neighbouring property nor a natural area should become unintentionally colonised as a result.

Near dunes, riverbanks, wetlands or protected nature sites, French authorities strongly advise gradual removal. Large, old clumps can often only be taken out with professional assistance, including excavation of the root crowns.

More suitable alternatives for the garden

Many amateur gardeners do not want to lose the visual impact of tall grasses. Fortunately, numerous species are decorative and robust while also being more environmentally compatible.

Popular alternatives include:

• Stipa tenuissima (Mexican feather grass): Fine and soft, it moves in even a light breeze and looks particularly elegant when planted in groups.
• Molinia (purple moor-grass): A native species that turns golden-yellow in autumn and provides food for insects.
• Blue fescue: Compact clumps with grey-blue foliage, well suited to rock gardens or dry borders.
• Switchgrass and dwarf varieties of Chinese silver grass: Tall, upright grasses with impressive flower heads, suitable for smaller or larger gardens depending on the variety.

Anyone planning a new garden should consult regional planting lists provided by towns, local authorities or conservation organisations. Pampas grass is generally no longer recommended on these lists; instead, they offer many native grasses and perennials that benefit insects and birds.

What German garden owners can learn from France

Germany currently has no blanket ban on pampas grass comparable to that in France. However, awareness of invasive species is growing. Official blacklists, including those used in nature conservation, are continually being expanded. Some highly invasive non-native species are already regulated, and others may follow.

Anyone with pampas grass in their garden can use the French guidance as a model:

• Cut plumes before the seeds ripen to prevent spread.
• Do not plant new specimens or give away divided sections.
• Gradually remove it if it is close to sensitive natural habitats.
• Do not dispose of it in home compost.

For those already considering redesigning their garden, replacing it with other grasses offers several advantages at once: less risk, fewer cutting injuries, often greater benefits for insects and a much clearer conscience about the surrounding environment.

How to remove pampas grass safely

Removing it is physically demanding but achievable. A dry day in autumn or late winter, before new growth begins, is ideal.

Practical tip:

• Tie the clump together with rope to keep the leaves under control.
• Cut the stems back to around 30–40 centimetres, using a saw or sharp hedge trimmers.
• Lift the root crown from the ground with a spade or digging fork, or use a mini excavator for very large specimens.
• Dig out every remaining piece of root carefully so that no shoots are left behind.
• Take the material in securely sealed bags to the local recycling centre.

Anyone who is unsure or has physical limitations should hire a gardening contractor. This is particularly safer on slopes or dry embankments.

Why ornamental grasses are more than decoration

The example of pampas grass shows how significantly a seemingly harmless fashionable plant can alter entire landscapes. Ornamental grasses play a greater role than many people assume: they influence which insects can find food, which birds have cover and how resilient an ecosystem remains in the face of drought and fire.

Choosing plants carefully helps to shape this development. Native or site-appropriate species support ecological balance while still looking modern. In many cases, a slightly different choice of plants is enough to turn a potentially problematic corner of a garden into a genuine refuge for wildlife.

For amateur gardeners, that means considering more than the Instagram look when buying grasses: think about wind-blown seeds, root vigour and the habitat beyond your own boundary. That way, the garden remains beautiful, and so does its surroundings.