Iowa Code § 515.138
In case of loss or damage to growing crops by hail, notice of such loss or damage must be given to the company by the insured by mailing a certified mail letter within ten days from the time such loss or damage occurs.
[C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §515.100] 2007 Acts, ch 152, §26 CS2007, §515.138 2008 Acts, ch 1074, §12