Monsoon prep for terrace tomatoes — 7 things to fix before the rains hit.

The first heavy rain catches most rooftop growers off-guard. Plants that looked fine in April lose half their leaves in two weeks of July humidity. None of this is bad luck. It's seven small jobs that most growers skip — and there's a two-week window in late May where you can still do them.

We've kept this short. No theory. Walk your terrace tomorrow morning with this list and you'll find at least four of the seven need attention.

1. Step 01

   Check every planter's drainage

   Lift each pot. If the drainage hole is blocked with roots or old soil, pour a litre of water and watch — it should run out within 30 seconds. Slow drainage in monsoon = root rot inside two weeks.

   What to do

   Poke through the drain hole with a stick. Add a 1-inch gravel layer at the base when you re-pot. For terrace beds, clear floor drains and unblock the parapet outlet.

2. Step 02

   Stake before the pre-monsoon wind

   Indian monsoons arrive with strong gusts a week before the first rain. A 3-foot tomato plant in a 12-inch pot will topple. By then your stems snap.

   What to do

   Push a 4-foot bamboo or PVC stake into the pot now (along the rim, not the centre). Tie loosely with cloth strips at three points. Leave room for the stem to thicken.

3. Step 03

   Watch for early blight and leaf curl

   Constant humidity makes fungal disease move fast. Yellow patches with brown rings on the lower leaves = early blight. Curled, leathery new leaves = leaf curl virus (whitefly).

   What to do

   Pluck affected leaves and bin them, don't compost. Spray neem oil (5ml in 1L water + a drop of soap) every 7 days. For whiteflies, a yellow sticky trap above the canopy.

4. Step 04

   Move pots away from puddles

   If your terrace has corners that pool water, the pots there will sit in standing water all monsoon. Roots suffocate.

   What to do

   Walk your terrace after the next rain (or pour a bucket from the wall). Mark wet zones. Move pots to higher spots, or put them on bricks to lift them 2 inches off the floor.

5. Step 05

   Cover seedlings

   Anything under 4 inches tall will get crushed by heavy rain. The first week after transplanting is the most fragile.

   What to do

   A shade-net or even an upturned plastic bottle (top cut off) over each seedling. Keep it on for the first 7–10 days, then remove during light rain.

6. Step 06

   Top up the mulch

   Heavy rain compacts soil. Bare soil also splashes spores from the ground onto your lower leaves — this is how blight spreads.

   What to do

   Add a 1-inch layer of dry leaves, sugarcane bagasse, or coco husk on top of the soil. Keep it 2 inches away from the stem.

7. Step 07

   Stop nitrogen feeds, switch to potash

   Wet soil can't hold nitrogen — most of it washes out, and the rest pushes leafy growth that fungus loves. You don't want soft new leaves in monsoon.

   What to do

   Pause urea, vermicompost tea, and any leaf-feeding for 6 weeks. Add a tablespoon of wood ash (or muriate of potash, ½ tsp) per pot, every 15 days, until the rains stop.