The edible chrysanthemum, a specialty agricultural product of Zhongshan, is prized for its flavor and has won wide market recognition. But bound by natural growth cycles, it can be harvested only in autumn and winter each year. How can consumers enjoy delicious edible chrysanthemums all year round? In Zhongshan, agricultural technicians are trying to help the plants reset their biological clock, adjusting light duration as they explore ways to free their flowering period from seasonal constraints.

Inside a fully blacked-out greenhouse, only faint slivers of light seep through the seams.

The black shade screens above the greenhouse are motor-controlled.

The greenhouse enters "night mode."

Supplemental lighting is turned on when natural light is insufficient.

Flower buds begin to emerge.

Once budding begins, shading is removed to return the plants to normal daylight conditions.

Farmers pinch off excess buds from young chrysanthemum plants.

Edible chrysanthemums reach the harvest stage.

Fresh edible chrysanthemums are showcased as a signature Zhongshan delicacy at a recent investment promotion event in Xi'an. (Photo by Miao Xiaojian)