Blackening Jalapeños & Declining Kiwi Vines: Diagnosis & Solutions

Jalapeños Turning Black: Fungal Infection

Black, small jalapeños alongside healthy bell peppers suggest a fungal disease—likely anthracnose or phytophthora blight. These pathogens thrive in warm, wet conditions and enter through wounds or natural openings. The fact that bell peppers are unaffected may indicate cultivar susceptibility differences.

Action Plan:

• Remove and destroy affected fruit.
• Apply a copper-based or chlorothalonil fungicide per label directions.
• Avoid overhead watering; use drip irrigation.
• Rotate solanaceous crops yearly.

Kiwi Vines: Declining Yield & Flavor After 15 Years

Kiwi vines (Actinidia deliciosa) are long-lived but not immortal. After 15 years, several factors may reduce productivity:

• Sunlight: Ensure full sun (6+ hours). Nearby trees may now shade vines.
• Nutrition: Apply balanced fertilizer (10-10-10) in early spring, broadcast to the drip line, and water in deeply.
• Pruning: Kiwis fruit on last year's wood. Annual winter pruning removes old canes and stimulates new fruiting wood.
• Pollination: Verify male vine viability (1 male per 6–8 females).
• Age: Vines may simply be senescing; consider replacement with new, disease-free stock.

Rapid ripening and bland flavor often indicate water stress or nutrient imbalance during fruit maturation. Consistent deep watering and potassium-rich fertilizer during fruit swell can improve quality.