Moss on lawns is best dealt with in spring, as this is when grass is most invaded by this stuff. Timing is very important; too early or too cold, and your overseeding won’t germinate, and your existing grass won’t recover. In the meantime, the moss you’ve left behind is enjoying your slightly knackered lawn and spreading like wildfire, putting you back at square one.

Too late, and the drier weather means harder work to keep the seed damp enough to germinate. To remove moss from your lawn in spring, gardening expert and four-time gold medalist of the RHS Chelsea Flower Show, Adam Woolcott, has shared one “brilliant” product gardeners need to be using in a video captioned “moss be gone”. Taking to his TikTok page @adam.woolcott, the gardener showed how to use lawn sand to “kill moss” and “thicken up the grass and make it much more greener”.

This product is a sand-based chemical fertiliser that will add nutrients to a lawn, like nitrogen and iron, which is designed to suppress moss.

Giving users a demonstration, Adam said: “I’m applying lawn sand to my lawn to get rid of the moss. 80g per square metre. What I’ve done is I’ve measured out a little square metre section to spread this out over the lawn.

“Lawn sand is absolutely fantastic because what it will do, it will kill the moss, it will thicken up the grass, and it will make the grass much much more greener.”

For those who have a large lawn, he pointed out that gardeners can section it off with bamboo canes, rope or string and treat it per square metre. For a “really big lawn”, a calibrated spreader can be used.

Adam warned: “The only thing to remember is not to apply this when the ground is frosty or in really hot weather. Also, don’t cut the grass three days before or four days after treatment. 

The gardener concluded: “So if you’re looking for something to kill the moss, to green up the lawn, to make it healthier, stronger and more disease resistant, lawn sand is a really brilliant product for that.”