Got a houseplant query? This week, our expert offers advice on keeping cheese plants healthy

What’s the problem?
The leaves on my Swiss cheese plant are losing their dark green colour.

Diagnosis
Yellowing leaves on a monstera (Monstera deliciosa or Swiss cheese plant) can be caused by overwatering, underwatering, low light or nutrient imbalances. Overwatering is the usual culprit – if the soil stays too wet, the roots may suffocate or develop rot, leading to yellow leaves. But underwatering can also stress the plant and cause leaf yellowing. Inadequate light or an abrupt change in lighting conditions may also contribute.