“[A]ll parts, seeds and varieties of the plant cannabis sativa 1., whether growing or not, or a product, derivative, extract, cannabinoid, isomer, acid, salt or salt of isomer made from that plant with a [tetrahydrocannabinol, the psychoactive component of the cannabis plant, with the scientific name trans-delta 9-tetrahydrocannabinol (“THC”)] concentration of not more than three-tenths of one percent (0.3%) on a dry weight basis when using post-decarboxylation or another similarly reliable testing method.