Why the Monsoon Demands a New Approach
The monsoon season dramatically changes the indoor environment. Humidity skyrockets, natural light levels drop due to overcast skies, and temperatures can fluctuate. For indoor plants, this means the risk of overwatering and fungal diseases increases
significantly. The soil stays moist for longer because of high humidity and reduced evaporation. This creates a perfect breeding ground for pests and root rot, one of the most common and fatal issues for houseplants. Simply put, the care routine that worked during the hot, dry summer will not work now; a new, more observant approach is necessary to keep your plants healthy.
Rethink Your Watering Schedule
The single biggest mistake plant owners make during the monsoon is overwatering. With high ambient humidity, the soil dries out much more slowly. A fixed watering schedule becomes a recipe for disaster. Instead of watering by the calendar, you must water by touch. Before reaching for the watering can, insert your finger about an inch into the soil. If it feels moist, wait another day or two and check again. Only water when the top layer of soil feels dry. When you do water, ensure your pots have excellent drainage holes to allow excess water to escape, and never let pots sit in a saucer full of water.
Manage Humidity and Airflow
While many tropical plants enjoy humidity, the constant dampness of the monsoon can be too much, especially without good air circulation. Stagnant, humid air is a primary cause of fungal infections like powdery mildew. To combat this, ensure your plants have space between them for air to move freely. If possible, open windows for a few hours on less rainy days to improve ventilation. You can also place pots on stands or pebble trays, which elevates them slightly and improves airflow around the base, preventing water from stagnating.
Maximise Limited Sunlight
Grey, overcast skies mean significantly less sunlight, which is vital for photosynthesis. Even plants that tolerate low light can suffer during the prolonged dimness of the monsoon. To help your plants get the light they need, move them closer to windows, particularly those facing south. Clean your window panes and wipe the dust off your plant's leaves regularly to maximize light absorption. Rotating your plants every few days will also ensure all sides get some exposure to the available light. For sun-loving plants like succulents, this period can be particularly challenging, so give them the brightest spot you have.
Be Vigilant About Pests and Diseases
The warm, wet conditions of the monsoon are ideal for pests and fungal diseases. Fungus gnats, mealybugs, and aphids thrive in damp environments. Inspect your plants regularly, paying close attention to the undersides of leaves and the soil surface. Fungus gnats are tiny black flies often seen hovering around the soil and are a clear sign of overwatering. Mealybugs appear as white, cotton-like clusters in leaf joints. An effective, organic preventative measure is to spray neem oil on the leaves every 10-15 days. If you spot any pests, isolate the infected plant immediately to prevent them from spreading.
Hold Back on Fertiliser
Most indoor plants slow down their growth during the monsoon due to the lack of sufficient sunlight. Because they aren't actively growing, they require fewer nutrients. Fertilising during this dormant period can do more harm than good, potentially leading to 'fertiliser burn' where the chemicals damage the moist roots. It is best to reduce or completely stop feeding your plants during the rainy season. If you feel your plants need a boost, opt for a mild organic option like vermicompost or compost tea, but only apply it during a dry spell.
