Iowa Code § 199.4
In case agricultural or vegetable seed is offered or exposed for sale in bulk or sold from bulk, the information required under section 199.3 may be supplied by a placard conspicuously displayed with the several required items thereon or a printed or written statement to be furnished to any purchaser of the seed.
[S13, §5077-a6; C24, 27, 31, 35, 39, §3133; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §199.4; 82 Acts, ch 1191, §4]