Or. Rev. Stat. § 633.655
A person is not subject to the penalties of ORS 633.992 for having sold, offered for sale, exposed for sale or transported in this state any agricultural, flower or vegetable seed, that:
(1) Is incorrectly labeled or represented as to kind and variety or origin, if the seeds cannot be identified except by a field test, when such person:
[1955 c.379 §21; 1971 c.489 §4; 2007 c.281 §11]