How to Grow Bunching Onions Using a Hydroponic System for Beginners
Basic Data
- ☀ Ideal Temperature: Bunching Onions prefer temperatures between 55°F to 75°F.
- 🌱 Germination Time: Typically takes 7 to 14 days to germinate.
- 📅 Time to Maturity: Reaches maturity in about 60 to 80 days.
Germination Steps
- Step 1: Soak the planting sponge and gently squeeze out excess moisture.
- Step 2: Place bunching onion seeds into the damp sponge.
- Step 3: Keep in a well-lit area until seeds germinate.
- Step 4: Transfer the sponge with the sprouted seeds to the hydroponic system.
Growing Process
Light Requirements Table
| Stage | Light Duration | Light Spectrum | Light Intensity |
| Germination | 12-14 hours/day | Full spectrum | 100-150 µmol/m²/s |
| Seedling | 14-16 hours/day | Full spectrum | 150-200 µmol/m²/s |
| Vegetative | 14-16 hours/day | Full spectrum | 150-200 µmol/m²/s |
| Mature | 14-16 hours/day | Full spectrum | 150-200 µmol/m²/s |
- 💧 Water Pump Volume and Duration: Set to cycle every 20 minutes.
- 🔧 pH Value: 6.0 to 6.7.
- 🍼 Nutrient Ratio:
- Nitrogen: 150 parts per million
- Phosphorus: 50 parts per million
- Potassium: 200 parts per million
- Calcium: 100 parts per million
- Magnesium: 50 parts per million
- Trace Elements: Include Iron, Manganese, Zinc at 1 part per million each as needed.
Plant Benefits
- Continuous Harvest: Bunching onions can be harvested continuously by cutting the green tops, which will regrow.
- Culinary Flexibility: Adds fresh flavor to a variety of dishes, from salads to soups.
- Easy to Grow: Requires minimal space and is relatively easy to maintain.
Conclusion
Bunching onions are an excellent choice for hydroponic beginners due to their ease of growth and continuous yield. This plant is perfect for those who wish to have a steady supply of fresh onions without the need for replanting. Enjoy the convenience and flavor of home-grown bunching onions in your cooking.