When heads are a diameter of 2 to 3 inches, take outer leaves and fold them up and over the head. Tie them with a string. This keeps head from turning yellow. In 1 to 3 weeks diameter of head should be 6 to 7 inches and ready to harvest. Corn Kernels are plump, milky when mature.
Silks are brown, dry.
Corn is at prime eating quality for only 72 hours before becoming over mature. Harvest early in the morning or during cool weather. Cucumbers Pick when 6 to 9 inches long and still bright green and firm. Over mature fruits are dull in color or yellow and less crisp. Do not raise vines when picking as this may damage the vines and reduce yields.