No person shall distribute an adulterated soil or plant amendment. A soil amendment or plant amendment is deemed to be adulterated if:
(1) It contains any deleterious or harmful substance, or organism in sufficient amount to render it injurious to beneficial plant life, animals, humans, aquatic life, soil or water when applied in accordance with directions for use on the label; or, if adequate warning statements and directions for use, which may be necessary to protect plant life, animals, humans, aquatic life, soil or water, are not shown on the label; or
(2) Its composition falls below or differs from that which it is purported to possess by its labeling; or
(3) It contains unwanted crop seed or weed seed.