Aubergines
Solanum melongena is suitable for hydroponic self-sufficiency in Dutch buckets or a drip-irrigated substrate.
Why this crop makes sense
Aubergines need warmth, strong light and reliable pollination. The decisive question is not merely whether the plant grows hydroponically, but whether its edible yield, growing period, light requirements, workload and storage life suit the household.
System and root space
Dutch buckets or a drip-irrigated substrate are recommended. The root zone must remain evenly moist, well aerated and protected from light. Record the source water and nutrient solution; returns, pipes and reservoirs must remain accessible and easy to clean.
Suitable system pages: Drip irrigation and Dutch buckets
pH, EC and climate
A cautious starting range is pH 5.5–6.5 and EC 2.0–3.2 mS/cm at 20–28 °C. These are not universal target values: cultivar, age, light, source water, temperature, measuring method and development stage may require adjustments.
Sowing and crop management
Support heavy shoots, assist pollination and monitor for spider mites from an early stage. A small preliminary trial checks germination and system performance. Space plants approximately 40–55 cm apart and regularly inspect root health, leaf colour, pests and uniform water distribution.
Harvesting and storage
Harvest glossy fruit once it reaches the size typical for the cultivar. Use it fresh or cook before freezing. Process only healthy, clean plant parts and follow the food-hygiene requirements of the chosen preservation method.
Troubleshooting
- Tall, soft plants: check light levels, spacing and temperature.
- Leaf-edge damage or chlorosis: check not only EC but also pH, water hardness and nutrient formulation.
- Brown roots: investigate temperature, oxygen supply, hygiene and waterlogging.
- Uneven yields: compare flow rates, emitters, plant spacing and cultivars.