Ask any Mumbai gardener what their hardest season is and they will not say summer. Between June and September, the problem stops being water and starts being too much water, too little light, and air that never quite dries out. Here is what actually matters.
Drainage Beats Everything
Root rot is the number one monsoon killer, and it is almost always a drainage problem rather than a watering problem. Before the first showers:
- Check every drainage hole. Roots and compacted soil block them over time. Clear them with a chopstick.
- Lift pots off the ground. Pot feet, bricks or even bottle caps stop water pooling underneath.
- Empty the saucers. A saucer full of rainwater is a root-rot incubator. If you cannot check them daily, remove them for the season.
- Move terracotta out, keep plastic in. Terracotta breathes and dries faster, which is exactly what you want now.
Stop Watering on a Schedule
This is the single change that saves the most plants. Humidity in Mumbai sits above 80% for weeks, so soil that dried in two days in April may stay damp for ten days in July. Push a finger two inches into the soil. If it is damp, walk away. Most indoor plants need roughly a third of their summer watering during peak monsoon.
Watch for Fungus and Pests
Warm, wet, still air is ideal for fungal problems. Watch for white powdery patches on leaves, black spots with yellow halos, and soft, mushy stems at soil level.
- Space pots apart so air can move between them.
- Water the soil, not the leaves.
- Remove fallen leaves from the soil surface rather than letting them rot there.
- Neem oil once a fortnight is a reliable preventative, and it handles mealybugs and fungus gnats at the same time.
Hold Off on Fertiliser
Heavy rain leaches nutrients straight out of the pot, so feeding feels intuitive. Resist it. Light levels are low, growth is slow, and unused fertiliser salts build up in soggy soil. Wait until late September, then resume at half strength.
Which Plants Enjoy It
Not everything struggles. Ferns, medicinal herbs like mint and lemongrass, and most outdoor plants put on their best growth of the year right now. Monsoon is also the best time to propagate: cuttings root faster in humid air than at any other point in the calendar.
A Quick Checklist
- Clear drainage holes and raise pots off the ground
- Empty or remove saucers
- Water by finger test, never by calendar
- Improve airflow between pots
- Neem oil fortnightly
- Pause fertiliser until the rains ease
Get these right and the monsoon becomes your plants’ growing season rather than the one you dread. Not sure what will cope on your particular balcony? Talk to us — we grow everything we sell in this climate.