The field of ecopsychology focuses on the affective relationship between individuals and nature that is based on the premise that what individuals love and care for, they will protect. There is however a methodological gap within the field of ecopsychology that relates to the qualitative exploration of the human-nature nexus. Elicitation techniques are a popular method used for exploring subconscious processes or to engage participants in a subject that might seem abstract such as affect towards nature. Currently, there exists no methodological guideline on how to develop a picture elicitation technique to explore the human-nature nexus and there is no technique to assist with this exploration. This article describes the methodology used to develop the Nature Nexus Elicitation Technique to enable the tacit exploration of the affective relationship that individuals have with nature. Six phases of the elicitation technique development are explained. The phases included a Systematic Literature Review, parallel study conducted online ( N = 43), emergent category validation, technique visual development, feasibility testing ( N = 5), and technique use ( N = 44). The results show the technique development processes as well as the output which is a range of cards that cover human-nature expressions that include intimacy, empathy, engagement, ambivalence, apathy, and alienation.