Graywall symptoms typically develops on green fruit prior to harvest but can develop at later stages also.

Green fruits with graywall may show yellow sections presenting signs of uneven ripening as the fruit matures and remain woody.

The internal necrosis can be seen in the cross-walls and very infrequently in the center pith area of the fruit.

Internally, graywall is characterized by dark necrotic areas usually in the vascular tissue of the outer walls.