Why no single plant can replace the lawn

No plant combines, in every setting, the qualities that make a lawn useful: a continuous, low surface that is reasonably hard-wearing, can be repaired by mowing and looks predictable. Alternatives exist, but each replaces only some of those functions. The solution starts by separating use, appearance and maintenance, rather than looking for a miracle species.

A lawn is the result of combining grasses, prepared soil, irrigation, mowing, fertility and repair. When someone asks for a plant to replace it, they are often asking a single species to deliver the same performance without the same level of management. In many situations that aim cannot be met.

Herbaceous ground-cover plants can form low surfaces, but they vary in their tolerance of foot traffic, their winter behaviour and their speed of recovery. Subshrubs create structure, but the surface can no longer be walked on. Meadows accept greater diversity and fewer cuts, but do not keep the same appearance or stand up to intensive use.

It is more useful to ask what the lawn does in each area. If it is there for walking on, it can be replaced by a path. If it is only there to keep the ground green under trees, a shade-tolerant ground cover may make more sense. If it frames a distant view, a meadow or a mowable mix can bring in seasonality. If it is a play area, lawn may still be the best option.

Breaking it down like this avoids extreme solutions. A garden can cut its lawn area substantially without doing away with it and, at the same time, increase the diversity of layers and reduce the surfaces mown every week.

A newly planted alternative usually calls for intensive preparation: weed removal, drainage correction, establishment watering, replacements and control of competition. Maintenance may fall once the planting has closed up, but it rarely disappears. Studies of green-space management show that the relationship between maintenance intensity and biodiversity is complex and varies between biological groups.

The measure of success should include use, ground cover, stability, water consumption, hours of work and acceptance of the seasonal look. Without these indicators, an alternative can look more sustainable on the drawing and prove more demanding in practice.

The most common mistakes are promising a universal alternative; judging only by how it looks on planting day; ignoring winter behaviour; and comparing costs without including the establishment years.

At Diaplant, we divide the garden into microzones and choose the solution that best answers each function. In many cases, the answer is a mosaic of lawn, ground-cover plants, subshrubs and areas mown less often.

The best substitute for the lawn is often a combination of solutions: less area for walking on, more paths, massed planting, ground cover and seasonal areas. Diversity also begins with the way surfaces are used.

• Smith, L. S.; Fellowes, M. D. E. The grass-free lawn: Management and species choice for optimum ground cover and plant diversity. (2014).
• Paudel, S.; States, S. L. Urban green spaces and sustainability: Exploring the ecosystem services and disservices of grassy lawns versus floral meadows. (2023).
• The association between maintenance and biodiversity in urban green spaces: A review. (2024).