Chilli
Also called: فلفل حار · شطة · Filfil Har · Mirchi
The easiest and toughest of this family, and the most tolerant of both heat and salt. Ideal for a beginner and for balcony pots.
The year at a glance
Each month is split in half. The outline marks now.
Stage by stage
Stage 1 of 9
Seed
Days 0–7
Seed
Days 0–7The seed sits in the soil taking up water and swelling. Nothing shows above the surface — everything is happening underground.
Do now
- Water lightly and often so the soil stays damp but never soaked. Letting it dry out between waterings kills the seed before it sprouts.
- Cover the surface with a thin layer of straw or compost to slow evaporation and steady the temperature.
- Label what you sowed and when. You will need the date to work out the harvest.
Watch for
- A hard crust forming on sandy soil after watering, which traps the sprout underneath. Break it gently.
- Ants carrying small seeds away — a very common problem in Qatari gardens.
In Qatar
Unlike the rest of its family it can be direct-sown here, because it copes with hot soil.
Germination
Days 8–18The seed coat splits: a root pushes down and a shoot pushes up. The two seed leaves that appear are not true leaves — they are the seed’s own food store.
Do now
- Keep moisture constant. The first root is very fine and a single dry day can end the seedling.
- Remove any covering as soon as the first sprout shows, or it will stretch thin looking for light.
- Give bright, indirect light. Direct midday sun will scorch a new seedling within hours.
Watch for
- A long, thin, pale stem: the seedling is not getting enough light and will collapse.
- Sudden wilting with a pinched stem at soil level — damping off, caused by overwatering.
In Qatar
The slowest seed in this guide. Eighteen days is entirely normal — do not re-sow.
Seedling
Days 19–42The first true leaves appear, shaped differently from the seed leaves. The plant is now feeding itself and the roots are branching fast.
Do now
- Thin crowded seedlings and keep the strongest. Crowding gives you many weak plants instead of one good one.
- Start watering less often but more deeply, to drive the roots downwards.
- Harden the seedling off — build up its sun exposure over a week before transplanting.
Watch for
- Yellowing lower leaves: nitrogen shortage, very common in Qatar’s poor sandy soil.
- Small holes or chewed edges, meaning snails or young grasshoppers.
In Qatar
A tough seedling that takes direct October sun without a long hardening-off, unlike bell pepper.
Vegetative growth
Days 43–66The plant is building its frame — stem, leaves, branches. Every leaf added now means more fruit later, because leaves are the sugar factory.
Do now
- Stake the plant now while it is small — staking late damages the roots.
- Feed with a nitrogen-rich fertiliser every two weeks to push leafy growth.
- Water deeply in the early morning. Evening watering plus high humidity invites fungal disease.
- Check the undersides of leaves weekly for whitefly and aphids.
Watch for
- Lush leaves but no flowers: too much nitrogen. Stop the nitrogen feed.
- Midday wilting even though the soil is moist: heat stress — the plant needs shade.
In Qatar
Grows happily in a 10-litre pot on a sunny balcony — the best option for apartment dwellers in Doha.
Flowering
Days 67–80The plant switches from building a body to making offspring. Flowers open, and every one that is successfully pollinated becomes a fruit.
Do now
- Cut back nitrogen and raise potassium and phosphorus to support fruit set.
- Never let the soil dry out completely between waterings. Drought now makes the flowers drop.
- Shake the plant gently in the morning, or use a small brush, to help pollination if bees are scarce.
Watch for
- Flowers dropping without setting fruit: above about 35 °C the pollen goes sterile. Get shade over it now.
- No pollinating insects at all — common on enclosed roofs and balconies.
In Qatar
Flowers and sets fruit up to about 38 °C, far beyond tomato. That is why it runs into June.
Fruit set
Days 81–95The petals wither and the ovary behind them swells. Small, hard green fruits appear and grow day by day.
Do now
- Make watering perfectly regular. Swinging between dry and drenched causes most fruit cracking and rot.
- Support the fruiting branches before the weight breaks them.
- Add calcium if your irrigation water is brackish, to head off blossom-end rot.
Watch for
- A sunken brown patch at the base of the fruit: calcium shortage from irregular watering or salinity.
- Small fruits yellowing and dropping: the plant is carrying more than it can feed, or it is thirsty.
In Qatar
It sets very heavily. If the fruits come small, thin them by picking some green.
Ripening
Days 96–115The fruit stops growing and starts changing colour, turning its starch into sugar. Heat speeds this stage up.
Do now
- Ease off the water slightly to concentrate the flavour — but never to the point of wilting.
- Shade exposed fruit with the plant’s own leaves to prevent sunscald.
- Pick as things ripen. Leaving fruit on the plant stops it setting new ones.
Watch for
- White or leathery brown patches on the sun-facing side: sunscald.
- A small hole with rot inside, meaning fruit worm.
In Qatar
The turn to red takes three weeks in December’s cold but only two in March’s warmth.
Harvest
Days 116–200The fruit is ready. The plant is at peak production and will keep bearing as long as you keep picking and the weather holds.
Do now
- Pick in the early morning when the fruit is full of water and will keep longest.
- Use scissors rather than pulling by hand, so you do not tear the branch.
- Keep feeding potassium every two weeks to stretch the picking season out.
Watch for
- New fruit coming smaller: the plant is exhausted and needs feeding.
- The seasonal heat rising, which will shut production down within weeks.
In Qatar
The longest picking season in this guide — December to June. One plant feeds a household.
End of cycle
Days 201–260Production tails off and the leaves yellow. As the heat builds the plant stops setting fruit altogether.
Do now
- Bring in the last of the fruit, even the ones not fully ripe.
- Save seed from the best fruit on the strongest plant if you want to grow it again.
- Pull the plant and compost the healthy remains; bin or burn anything diseased.
- Work compost into the soil now, ready for the next Al-Wasm.
Watch for
- Leaving diseased plants in the ground carries pests over to next season’s crop.
- Bare soil under the sun goes dead. Cover it or sow a green manure.
In Qatar
Chilli is genuinely perennial. Cut it back by half in June and shade it, and it will survive a Qatari summer and fruit again in autumn.
- Water
- Medium
- Salt tolerance
- High
- Heat tolerance
- High
8 L/week in winter, 18 L in summer
Soil preparation
Handles Qatar’s sand better than anything else in its family. Three kilos of compost per square metre is enough.
Pests
Spider mite
- Sign
- Pale stippled leaves and fine webbing underneath, worse as the air dries out.
- What to do
- Mist the foliage in the morning regularly. The chilli’s main enemy here, and the easiest to fix.
Aphids
- Sign
- Clusters on the new tips through the mild winter.
- What to do
- A strong water blast. Chilli tolerates aphids better than most and rarely needs more.
Common problems
Loss of heat in the fruit
- Cause
- Too much water. Chilli makes capsaicin in response to mild water stress.
- Fix
- Ease off the water once it starts fruiting. A little stress gives a hotter chilli.
Winter leaf drop
- Cause
- Murabbaniya nights dropping below 10 °C.
- Fix
- Cover with light fleece on the five coldest nights. It recovers fully by Ash-Shabt.
Picking
Pick green for a sharp clean heat, red for sweetness and more burn. Constant picking doubles the yield.
Keeping
Dry it by hanging in airy shade — perfectly suited to Qatar’s climate, and it keeps a full year.