How to Grow Watercress Using a Hydroponic System for Beginners
Basic Data
- ☀ Ideal Temperature: Watercress prefers cooler temperatures, typically between 50°F to 60°F.
- 🌱 Germination Time: Usually takes about 4 to 7 days to germinate.
- 📅 Time to Maturity: Typically matures in about 30 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: Keep in a cool 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 | 10-12 hours/day | Full spectrum | 100-150 µmol/m²/s |
| Seedling | 12-14 hours/day | Full spectrum | 150-200 µmol/m²/s |
| Vegetative | 12-14 hours/day | Full spectrum | 150-200 µmol/m²/s |
| Mature | 12-14 hours/day | Full spectrum | 150-200 µmol/m²/s |
- 💧 Water Pump Volume and Duration: Set to cycle every 10 minutes.
- 🔧 pH Value: 6.0 to 6.8.
- 🍼 Nutrient Ratio:
- Nitrogen: 150 parts per million
- Phosphorus: 50 parts per million
- Potassium: 200 parts per million
- Calcium: 150 parts per million
- Magnesium: 75 parts per million
- Trace Elements: Include Iron, Manganese, Zinc at 1 part per million each as needed.
Plant Benefits
- Nutritional Value: High in vitamins A and C, iron, and calcium.
- Culinary Uses: Adds a peppery flavor to salads, soups, and sandwiches.
- Fast Growth: Quick to mature, making it ideal for continuous harvesting.
Conclusion
Watercress is an excellent choice for hydroponic beginners due to its rapid growth and significant health benefits. It’s particularly suitable for those looking to quickly harvest and enjoy a nutritious addition to their meals.