Learning from Roxburgh, who had used expensive engravings, Wight decided to use cheaper lithographic techniques.
Wights illustrated publications included the uncoloured, six-volume Icones Plantarum Indiae Orientalis (1838–53) and two hand-coloured, two-volume works, the Illustrations of Indian Botany (1838–50) and Spicilegium Neilgherrense (1845–51).