Sweet corn is ready to pick when several key signs are observed:
- The silks on the corn ear have turned completely brown, dried out, and brittle.
- The ear feels soft to the touch, and the tip of the ear is blunt rather than pointed.
- When pricking a kernel with a fingernail, a milky white juice (not clear or watery) runs out, indicating the kernels are mature and sweet.
Typically, this occurs about three weeks after the silks have developed and usually around 75-85 days after planting. The corn ears mature top-down, so some ears may be ready before others. Harvest by twisting and pulling the ear sharply from the stalk. It is best to consume sweet corn soon after picking as sugars start turning to starch after a few days, reducing sweetness.
In summary, for best results, wait until the silks turn brown and brittle, test the kernels for milky juice, and harvest within the small window before starch replaces sugar.
