Pepper (Capsicum)
Capsicum annuum / C. frutescens / C. chinense
About Pepper (Capsicum)
Peppers encompass both sweet peppers (bell peppers) and hot peppers (chili), essential to cuisines worldwide. They are among the most valuable vegetable crops, with hot peppers particularly important in African, Asian, and Latin American cooking. Hot peppers contain capsaicin, which provides the heat sensation and has medicinal properties. Ethiopia is the largest hot pepper producer in Africa. Peppers are rich in vitamins C and A — red bell peppers contain more vitamin C than any other common vegetable. The global pepper market exceeds $30 billion. Peppers are grown both in open fields and greenhouses, and are increasingly exported from African and Asian countries to European markets.
Growing Conditions
Full sun — 6-8 hours minimum
450-700 mm per crop. Consistent moisture during flowering and fruit set. Water stress causes flower and fruit drop.
Well-drained, fertile loam. pH 6.0-6.8. Rich in organic matter.
Optimal 21-29°C. Fruit set fails below 15°C or above 35°C. Night temperatures of 15-20°C ideal.
Moderate. High humidity promotes bacterial spot and anthracnose.
Warm season — 60-90 days from transplant to first harvest (hot peppers), 70-80 days (sweet peppers).
Step-by-Step Growing Tips
Start seeds indoors 8-10 weeks before transplanting
Transplant after last frost when soil temperature exceeds 18°C
Space at 60 × 45 cm for open field, 45 × 30 cm with staking
Stake or cage large-fruited varieties to prevent lodging
Mulch to maintain consistent soil moisture and suppress weeds
Harvest hot peppers at desired color stage — green (immature) or red (full ripe)
Disease Risks to Watch
All diseases →Pepper bacterial spot (Xanthomonas euvesicatoria) causes small dark water-soaked leaf spots that turn brown with yellow halos, and raised scab-like fruit lesions. Spread by rain splash and seed. Manage with clean seed, copper + mancozeb sprays, resistant varieties, drip irrigation, and crop rotation. Copper resistance is increasing — rotate management tools.
Powdery mildew appears as white powdery spots on leaves and stems, caused by Erysiphe or Podosphaera fungi. It thrives in warm, dry weather with high humidity. Manage with sulfur sprays, potassium bicarbonate, neem oil, proper spacing for airflow, and resistant varieties. Unlike most fungal diseases, it does NOT need wet leaves to infect.
Tomato yellow leaf curl virus (TYLCV) is a begomovirus spread by whiteflies (Bemisia tabaci). Infected plants show upward leaf curling, yellowing leaf margins, stunted growth, and flower drop. There is no cure — management relies on resistant varieties, whitefly control with neem or imidacloprid, reflective mulches, and insect-proof netting.
Companion Planting
✅ Good Companions
❌ Avoid Nearby
Growing Zones
Frequently Asked Questions
When is the best time to plant Pepper (Capsicum)?
Warm season — 60-90 days from transplant to first harvest (hot peppers), 70-80 days (sweet peppers).
What soil does Pepper (Capsicum) need?
Well-drained, fertile loam. pH 6.0-6.8. Rich in organic matter.
How much water does Pepper (Capsicum) need?
450-700 mm per crop. Consistent moisture during flowering and fruit set. Water stress causes flower and fruit drop.
What are the most common diseases affecting Pepper (Capsicum)?
The most common diseases are: pepper bacterial spot, powdery mildew, tomato leaf curl virus. Monitor regularly and practice crop rotation.
What plants grow well with Pepper (Capsicum)?
Good companions include: basil, carrot, tomato. Avoid planting near fennel.
Related Crops — Solanaceae
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