Social media suggests that the combination is a superfood for tired plants. The reality is mould, gnats and the sour smell of rot

The problem
Once you tumble down a houseplant rabbit hole online, suddenly everything in your kitchen starts to look like fertiliser. Using oats and Epsom salts sounds wholesome, thrifty; breakfast for you, breakfast for your plants. But does it help?

The hack
The idea is that oats break down and enrich the soil, while Epsom salts (magnesium sulphate) top up magnesium to keep leaves green and glossy. Social media says a spoonful of each will pep up tired plants without the need for proper feed.