DOC №035SEC: PLANTSREV: 2026-05-15AUTHORED
How to Grow Basil Hydroponically
Hydroponic basil yields 4× more leaf than soil-grown. This guide covers pH, EC, light, pinching schedule, and the best system for each variety.
BY ROOTLESS FARM
Quick answer
Hydroponic Genovese basil reaches first harvest in 35–45 days at pH 6.0, EC 1.4, DLI 20 mol/m²/day, air temp 22–26 °C. DWC, drip, and ebb-and-flow all work; pinch above the 2nd node when the plant has 4 sets of true leaves.
Conditions
| Parameter | Value |
|---|---|
| pH | 5.5–6.5 (6.0 ideal) |
| EC | 1.0–1.6 mS/cm |
| Air temp | 20–28 °C |
| DLI | 20 mol/m²/day |
| Spacing | 25 cm |
| Harvest | 35–45 days |
Best system
DWC for hobbyists. Drip with rockwool for commercial — better airflow around the canopy.
FAQ
3 entries- Q01When do I start pinching basil?
- When the plant has 4 sets of true leaves. Pinch the top above the second node; the plant branches and yield doubles.
- Q02Why is my basil bolting?
- Long days + high temps. Drop photoperiod to 14h and keep air below 26 °C.
- Q03pH and EC for basil?
- pH 5.5–6.5 (ideal 6.0); EC 1.0–1.6 mS/cm. Higher than lettuce, lower than tomato.