(a) Distribution of horticultural growing media planted with live plant material is exempt from the labeling and registration requirements imposed pursuant to this article.

(b) Distribution of custom media is exempt from the registration requirements imposed pursuant to this article provided it is prepared for a single purchaser and is not held for distribution to other purchasers.

(c) Distribution of horticultural growing media containing plant nutrients shall be exempt from the requirements of Article 1 of this chapter, the "Georgia Plant Food Act of 1989."