🌽 Milk stage

The milk stage is when a grain has already grown but is still soft inside and filled with a white liquid that looks like milk. That is where the name comes from. It is used for wheat, barley, maize and other cereals.

In wheat and barley, the grain is watery at first. Then its contents turn milky. At the middle of the milk stage, the grain has reached full size but is still green. Starch builds up quickly inside. Then the liquid thickens, and the grain moves to the dough stage: it becomes soft like dough but no longer runs. After that comes full ripeness.

Milk stage or dough stage? At the milk stage the grain’s contents are still liquid and milky; at the dough stage they have thickened, soft like dough but no longer running; full ripeness comes after. The name has nothing to do with cow’s milk: it refers to the white liquid inside the grain. In wheat and barley the grain is watery first, while in maize the stage shows about 18–22 days after flowering, in yellow kernels that are mostly water.

“Milk stage” appears in growing guides and farming texts, not on food packs. You recognise it by the grain: the grain is filled with a white liquid, and maize kernels are yellow. Fresh cobs at this stage turn up at a farmers’ market or greengrocer, for eating fresh or boiled. The term is used for wheat, barley, maize and other cereals.

In maize, the milk stage comes about 18–22 days after flowering. The kernels are yellow and about 80% water. This is when the cobs are eaten fresh or boiled. If the grain suffers badly from drought at this stage, the harvest may be smaller.