Cao Van Hung rebuilt his greenhouse operation around hydroponic pennywort after earlier crop failures. Inside a controlled environment, he grows the crop using vertical towers, reservoirs, and horizontal racks to optimize space and production efficiency.
His greenhouse system enables clean, soil-free cultivation with tightly controlled inputs, reducing pests, contaminants, and labor while accelerating growth. Pennywort reaches harvest in 25–30 days and can be repeatedly cut every 15 days, ensuring continuous output.
The greenhouse now produces about 40 kg of fresh pennywort daily, along with processed products like juice and powder. This diversification adds value and stabilizes income streams from the same controlled-environment system.
By focusing on a simple, fast-growing crop in a hydroponic greenhouse, Hung has created a resilient, high-turnover production model that generates consistent monthly profits and demonstrates the potential of small-scale controlled-environment agriculture.
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