PlantyBoxPot and soil
A 20-25 cm (8-10 in) pot, 10-15 litres, per plant, with light, free-draining mix. Larger, vigorous varieties prefer 20 litres (5 gallons).
Light and position
Full sun and warmth: they thrive above 18 °C (64 °F) and stall below 12 °C (54 °F). Sow indoors in late winter and move outside once nights are mild.
Watering
About every 2 days in summer, letting the surface dry slightly between waterings. A little dryness while pods ripen makes them hotter, but never let the plant wilt.
Feeding
Every 2 weeks, with a potassium-rich feed from flowering on. Too much nitrogen gives lots of leaves and few peppers.
Harvest
Glossy, firm chillies in their final colour. Green ones are edible but milder.
How to harvestSnip the stalk with scissors; pulling breaks branches. Frequent picking brings more fruit.
Common problems
Too hot (above 32-35 °C / 90-95 °F), cold nights or too little water. It often sorts itself out once temperatures settle.
Aphids. Hose them off or use insecticidal soap.
Waterlogging or lack of nutrients. Check drainage and resume feeding.
FAQ
When are chili peppers ready to pick?
When they are glossy, firm and in their final colour (red, yellow, orange). Green ones are edible too, just milder.
Can I keep a chili plant over winter?
Yes, it's a perennial: cut it back by half, bring it into a bright spot indoors and water sparingly. Next spring it fruits earlier.
How do I pick chilies without damaging the plant?
Snip the stalk with scissors; pulling can break branches. Picking often encourages new fruit.
