(a) A license for the commercial sale or export of any endangered species by nursery farmers issued pursuant to § 70-8-304(3) shall allow a nursery farmer to engage in the commercial sale of any endangered species, subject to the restrictions of subsection (b).
(b) Each plant of an endangered species that is sold or exported by a nursery farmer shall be:
(1) Grown horticulturally from seeds or by vegetative propagation on the nursery farmer's land;
(2) Obtained from any source outside this state;
(3) Acquired from any person by gift or donation;
(4) Purchased from any person, subject to the restrictions of § 70-8-309(b); or
(5) Purchased from another nursery farmer in Tennessee.