A gardening expert revealed a common mistake people make when mowing. He is a self-confessed gardening geek and has an Instagram page.

He has many followers and wrote a book on gardening. The expert thinks lawns are important in British culture.

The expert said people should cut their grass when they can. He thinks once a week is a good idea.

He revealed a major mistake gardeners make. They mow their grass too short, so it gets dry.

The expert keeps his lawn long to get lines in it. People ask him how he gets the lines in his lawn.

The expert keeps his lawn at a medium length.

The expert pulls weeds from his garden. To get lines, people need a special mower.

The grass needs care before it is cut. To get stripes, people need to mow in one direction.

Then they need to mow in the opposite direction. They repeat this until they get stripes.

Another expert, Alan Titchmarsh, likes stripes on his lawn. He does not use weedkillers and does little to his lawn.

Alan Titchmarsh likes to rake away his moss.

The stripes come from a special mower. The stripes look different because the grass is bent.

Alan has a simple lawn care routine. He rakes out moss and gives his lawn food in the spring.

Gardeners should do some jobs now. They should define their lawn edges and create a gutter.

They can also repair bumps and hollows in their grass. They do this by peeling back the turf and adding or removing soil.