Summer Plant Care — Protecting Plants from Heat and Humidity

High heat, air conditioning, and summer humidity create unique challenges for houseplants. Here's how to keep your plants healthy through the hottest months.

Summer brings two conflicting challenges for indoor plants: the drying effect of air conditioning and the high outdoor humidity during rainy season. Managing both requires some adjustment to your care routine.

Beware of Air Conditioning

Cold, dry air from AC units desiccates leaves, causes brown tips, and stresses tropical plants. Keep plants away from direct AC airflow. If air conditioning runs heavily in your space, run a humidifier alongside it.

Adjust Watering During Rainy Season

High ambient humidity slows how quickly soil dries out. During rainy periods, reduce watering frequency — always check the soil before adding more water. Succulents and cacti can go weeks without water during humid spells.

Protect Against Intense Afternoon Sun

Summer afternoon sun through glass can scorch leaves, even on plants that normally enjoy bright light. Use sheer curtains or blinds to filter harsh light between 11am and 3pm.

Maintain Air Circulation

Warm, humid air encourages fungal disease and pest outbreaks. Open windows regularly for fresh air and space plants apart to allow circulation between them.

In summer, water deeply and less frequently rather than shallowly and often. Deep watering encourages strong root growth.