The rotary hydroponics system offers a space-saving and potentially high-yielding solution for soilless cultivation, promoting efficient resource use and automation for sustainable food production. This research investigates a closed-loop rotary hydroponics system designed to revolutionize fenugreek yield and enhance food security through resource-efficient and automated cultivation. Building upon the established benefits of aeroponics, particularly its efficient use of space and resources, rotary hydroponics introduces a groundbreaking, cylindrical design. This innovative approach not only maximizes space efficiency but also paves the way for further automation within the cultivation process. The proposed study delves into the design, development, and experimental analysis of a closed-loop, self-sustaining, and low-maintenance rotary hydroponics system specifically designed for fenugreek cultivation. The system prioritizes minimal human intervention through the integration of software-controlled monitoring and parameter adjustments. The research investigates the effectiveness of the system in promoting plant growth and analyzes the growth stages of fenugreek seedlings transplanted into the system. The experiment yielded promising results, with fenugreek plants reaching full maturity within 30 days and achieving an average height of 15–20 cm. These findings highlight the potential of the rotary hydroponics system to revolutionize fenugreek yield and bolster food security through its resource-efficient and sustainable cultivation approach.