As autumn draws to a close, many of us are already starting to think about how to protect our lawns from the cold. One of the big pests that often plagues gardeners is moss. In many gardens, especially in colder and wetter areas, moss tries to replace lawn where conditions are poor for ordinary growth. However, our grandmothers and grandfathers knew that fall is the perfect time to prevent moss from showing up at all in the spring.

Why does moss even form in the lawn? How do you combat it in autumn? And what can you do to keep your lawn clean and healthy in the spring, without green moss patches? We’ll advise you on how to protect your garden in the run-up to winter and prepare it so that your yard is absolutely perfect and moss-free in spring.

What are we doing wrong?

Moss is not just an aesthetic problem. It’s the result of a lawn that’s not in optimal condition. Moss thrives where the grass is weak, due to things like lack of sunlight, poor drainage, compacted soil or too acidic a pH. Michigan State University reports that moss grows primarily where the soil remains moist.

Moss and mosses prefer environments with excess surface moisture, low fertility, and more shade. This means that the real key to moss prevention lies in the conditions for grass growth, not in combating moss per se. Some literature even suggests that if you can’t maintain your lawn well in some areas, it may be more beneficial to tolerate moss there.

Moss is not just an aesthetic problem. It also destroys the lawn and prevents it from growing healthily. ━━ Moss is not just an aesthetic problem. It also destroys the lawn and prevents it from growing healthily. ( Source: schulzie /  iStockphoto )

Proven autumn steps

One of the steps that our ancestors intuitively knew is to aerate the soil and remove the layer of dead material. Today, this is called aeration (draining the soil) and verticutting (vertically pruning the sod and moss). Ideally, this step should be done in autumn when the soil is moist after rains.

Verticutting will remove moss debris and old dead lawn parts, aeration will help break up compacted soil, allowing grass roots to breathe and water in the soil to be absorbed more easily. After these steps, it is ideal to top up the lawn with new soil with plenty of nutrients. It is important that the soil has more sulphur and iron.

After a similar intervention, high-quality fertilisers containing nitrogen, phosphorus and potassium also help the soil to regenerate. If you take care of the garden in this way in autumn, you should have minimal moss to contend with in spring. In places where it does appear, repeat the process as soon as it has been removed.