The director of environmental management is authorized and instructed to promulgate reasonable rules and regulations relative to grading, marking, labeling, packing, and branding of products of the farm. Any fruit or vegetable offered or exposed for sale or distribution in a closed or open package so packed that the faced or shown surface gives a false representation of the contents of the package shall be construed to be misbranded under the terms of this section. Products of the farm sold or offered for sale as graded, marked, labeled, packed, or branded as conforming to those rules and regulations must conform.