Houseplant hacks: can a fan help plants repel pests?

They won’t save an unhealthy plant, but they do create better growing conditions in rooms with no airflow

The problem
Most plant advice focuses on light, water and soil. Air barely gets a mention, yet stagnant indoor air is one of the less discussed reasons houseplants struggle. Fungal spots, mould on the compost surface and pest infestations like mealybugs can all be traced back to a room with no airflow. We open windows in summer but rarely think about what happens in winter.

The hack
Running a small fan near your houseplants is said to improve stem strength, discourage mould and reduce pest pressure. In the wild, plants experience constant gentle movement; a fan replicates this indoors.