Corn Relative Maturity (CRM)

Three hybrids range in CRM from 100-119. Compare ear silk length on these three hybrids.

Close-up of full, lustrous, long silks coming out of an immature hybrid ear.
This hybrid has a CRM of 100 and is the earliest of these three shown.
Close-up of the top of an immature hybrid ear, which shows a short tuft of silks at the top, about half as long as the first hybrid’s picture.
This hybrid has a CRM of 110.
Close-up of a hybrid ear on stalk that is still completely husked with no silks showing.
This hybrid has a CRM of 119 and is the latest of these three hybrids.