Dutch growers and researchers unite to develop duckweed production for human consumption
Source: VFD.com
European approval The duckweed species Lemna gibba and Wolffia arrhiza received official EU approval as vegetables for human consumption in January 2025. Wageningen Research brings more than ten years of duckweed research to the project, covering cultivation conditions, crop physiology, microbiological safety, and product quality.
Within the project, controlled growing conditions will be designed, optimised, and validated at commercial scale. The system is intended to enable year-round production of Lemna gibba and Wolffia arrhiza under controlled conditions, without the use of chemical crop protection agents, while making optimal use of water, nutrients, and energy.
The project aims to develop a species-specific cultivation protocol applicable to existing greenhouse infrastructure, including guidelines for climate management, nutrient supply, harvest frequency, and hygiene. Data will be collected on yields, labour input, energy consumption, and product quality at both small and large scale.
Why this matters: For operators, this is a water-management story. The useful signal is that direct substrate measurements can help cut drain loss materially without giving up yield or fruit quality, which is exactly the kind of controllable efficiency gain a facility can build on.
Frequently Asked Questions
Why does substrate sensing matter in free-drain strawberry systems?
Because drain percentage tells a grower what already happened, while substrate moisture and EC data show root-zone conditions directly. That makes it easier to cut water loss without guessing.
What is the operator takeaway from this trial?
If the thresholds are understood well enough, growers can reduce drain water materially while protecting yield and fruit quality, which makes sensing an operational tool instead of a reporting tool.
