Most healthy plants will outgrow their pots eventually, so if it’s been a while since you’ve given your plant a fresh pot, this could be the problem.

“When a plant is ‘pot-bound’, its roots are too tightly packed and it can’t healthily sustain itself,” Cheshire explains. “If this is the issue you will usually see a slight yellowing all over the plant. You would rarely see just a few yellow leaves.”

To check whether your plant’s yellowing leaves are because it’s pot-bound, you can also lift it out of its pot and have a look at its roots.

“To check if a plant is pot-bound, carefully remove it from its nursery pot,” Cheshire recommends. “If the roots are circling around the edge of the pot, it might need more room. A few roots poking out of the top or bottom of the pot are not a sign your plant is pot-bound.”

Yellow leaves: 4 reasons why your plant’s leaves are turning yellow, and how to fix it