Scotland: Building a commercial seaweed industry. First policy guidelines for sustainable seaweed cultivation. The first set of policy guidelines for the commercial cultivation of seaweed in Scotland have been published. The Seaweed Cultivation Policy Statement also sets out the framework concerning the environmental impacts of seaweed farms, including the requirements to: consider and mitigate adverse environmental impacts; ensure that only native species are cultivated; be sited away from sources of pollution, where growing for human consumption; allow Small-medium size farms to be located anywhere in Scotland, subject to agreement and appropriate local conditions.