Night-Shift Leaf

At sunset, Salma turned the greenhouse vents toward the cooling towers and checked the leaves by touch. The new staple crop kept its pores closed through the hottest hours, saving water, then opened them after dark. Her job was to decide when the night shift began.

The crop's designers had built from a plant family with several versions of the same drought strategy: weak, inducible, and strong. Salma's field had the middle form. It could change its rhythm when the soil dried, but only if the irrigation schedule left enough water for the next flowering cycle. Her father wanted the vents opened early; the grower cooperative wanted every litre reserved for the fruiting beds.

A heat sensor blinked on the north wall. The roots were still wet, but a nearby reservoir had been diverted to the hospital gardens. Salma could keep the leaf cycle steady and risk a shallow harvest, or push the shift forward and alter the crop's flowering window. She opened the vents one notch. Across the greenhouse, thousands of leaves turned their undersides toward the night air, and one section stayed closed.