Marigold
Tagetes erecta
Malay names: Marigold
Cheerful blooms; grows well in hydro outdoors with full sun and moderate EC.
🌞 Light & Temperature
Light: Full sun (6–8 h)
Temperature: 22–34°C
🪴 Container & Medium
Container: DWC or Dutch buckets; good airflow and sun; stake tall varieties.
Medium / Solution: Medium: clay pebbles/perlite; Solution: pH 6.0–6.5, EC 1.6–2.2 mS/cm
💧 Watering / Solution Maintenance
Schedule: Maintain DWC/drip; change 10–14 days
Top-up: Moderate water demand
pH 6.0–6.5; EC 1.6–2.2 mS/cm
🧪 Nutrients
Type: Bloom nutrient (higher K)
Frequency: Check EC 1–2x/week; change 10–14 days
Dosage/EC: EC 1.6–2.2 mS/cm; pH 6.0–6.5
🍓 Harvest
Start: 6–8 weeks from sowing
Seasonality: Year-round in tropics; best in drier months
Duration: Continuous with deadheading
Harvest Indicators: Blooms fully opened; petals vibrant
Tips: Deadhead to prolong flowering; support in heavy rain.
🌱 Propagation
Seeds or cuttings (some varieties).
🐛 Pests & Diseases
- Aphids/whiteflies: Neem 1%; encourage beneficials; avoid overhead wetting late.
🌦️ Seasonal Notes (Malaysia)
Shelter during heavy rains to prevent flower damage.
📝 System Notes
Space adequately; provide airflow.
💡 Extra Care Tips
- Deadhead regularly
- Avoid excessive N (reduces blooms)
Note
EC and pH are guidelines—adjust to plant response and your water source. In monsoon humidity, increase airflow and reduce overcrowding to limit disease.