Why does the lawn suddenly turn into clover and other plants halfway down?

It may be a patch of lawn that’s become more like a small wildflower meadow. Clover, yarrow and self-heal can all grow among grass, and their seeds may already be in the soil. Differences in mowing, sunlight or soil conditions can make them more noticeable in one area than another, but the boundary alone doesn’t tell you which factor is responsible.

If you like the look, you could keep it and mow a path through. A meadow still needs occasional cutting, but it doesn’t need to be treated like a short, uniform lawn.

Before changing anything, take a closer look at the plants and compare the soil on both sides of the boundary. The mix could include clover, yarrow, self-heal or other flowers, while a difference in the ground below might explain why grass is doing better on one side. A small inspection hole can reveal buried roots or wood, or soil that feels noticeably compacted.

If this is a recently seeded lawn, different seed mixes or uneven compost, feeding or aeration can also leave patches growing differently. It’s worth checking the seed and care history before assuming the lawn has a disease or needs major work.

First decide whether you want a neat grass lawn or a mixed patch. If you’re happy with the flowers, let them grow and mow a route through the area. If you want grass instead, regular mowing and gradually removing unwanted plants can shift the look, though it may take time.

Have a good look for ragwort before it sets seed. If animals may eat the cuttings, don’t leave ragwort where it can dry and be eaten, since dried material can be hazardous to livestock.