Although legal transplants are a most fertile source of legal development, a failure to adapt their methods to local traditions and cultures before putting them into practice often results in the loss of indigenous legal cultures. This article examines environmental jurisprudence in Nigeria. It aims to determine whether the failure of these laws to curb the trend of unsustainable natural resource use in the country is traceable to the indigenous legal cultures of sustainability that were lost in the process of transplanting colonial ideologies into the Nigerian legal system. The article submits that neglecting the innate standards of sustainability in Nigeria's environmental law-making (a practice adopted since the period of colonization) has made the extant laws on natural resource sustainability largely ineffective. It recommends reworking some of the laws to reflect the lost traditions and notes the cultural imperative for natural resource sustainability.