How to Grow Watercress Using a Hydroponic System for Beginners
Basic Data
- ☀ Ideal Temperature: Watercress prefers cooler temperatures, ideally between 50°F to 60°F.
- 🌱 Germination Time: Typically takes 4 to 7 days to germinate.
- 📅 Time to Maturity: Reaches maturity in about 25 to 40 days.
Germination Steps
- Step 1: Soak the planting sponge and gently squeeze out excess moisture.
- Step 2: Place Watercress seeds into the damp sponge.
- Step 3: Maintain a cool environment until seeds germinate.
- Step 4: Transfer the sponge with the sprouted seeds to the vertical hydroponic system.
Growing Process
Light Requirements Table
Stage | Light Duration | Light Spectrum | Light Intensity |
Germination | 10-12 hours/day | Blue (450 nm), some Red (660 nm) | 100-150 µmol/m²/s |
Seedling | 10-12 hours/day | Full spectrum | 150-200 µmol/m²/s |
Vegetative | 10-12 hours/day | Full spectrum | 150-200 µmol/m²/s |
Mature | 10-12 hours/day | Full spectrum | 150-200 µmol/m²/s |
- 💧 Water Pump Volume and Duration: Set to cycle every 15 minutes.
- 🔧 pH Value: 6.5 to 6.8.
- 🍼 Nutrient Ratio:
- Nitrogen: 120 parts per million
- Phosphorus: 50 parts per million
- Potassium: 180 parts per million
- Calcium: 150 parts per million
- Magnesium: 50 parts per million
- Trace Elements: Include Iron, Manganese, Zinc at 1 part per million each as needed.
Plant Benefits
- Highly Nutritious: Watercress is extremely rich in vitamins and antioxidants, providing substantial health benefits.
- Rapid Growth: It grows very quickly, making it ideal for continuous harvesting.
- Peppery Flavor: Adds a spicy, peppery kick to salads, sandwiches, and soups.
Conclusion
Watercress is an excellent choice for hydroponic beginners due to its quick growth and the relative ease of maintaining optimal growing conditions. This peppery green can significantly enhance your diet with its high nutritional content and unique flavor. Hydroponic watercress not only grows faster but is also cleaner and more potent than its soil-grown counterparts.