This case on lily bulb farming and the risks experienced by local residents demonstrates the role uncertainty can play in environmental issues. It is an example of a complex situation in which stakeholders resort to experts for conclusive evidence and definite answers, yet this can rarely be provided. The case illustrates that in such situations with various problem definitions, limited knowledge, and variability at multiple levels, creating room for deliberation between stakeholders is a more productive strategy to create knowledge for action. Trust and acknowledgement of each other’s interests are key for such deliberative processes.