Lewis & Short

cēpūrĭcus, a, um, adj., = κηπονρικός, of or pertaining to gardening: loca, Firm. Math. 2, 12.
Hence, in neutr. plur.: Cē-pūrĭca; gen. -cōn, a treatise on gardening, Plin. 19, 10, 57, § 177.