TY - JOUR AB - Purpose There is a need to provide interventions to improve well-being that are accessible and cost-effective. Interventions to increase engagement with nature are coming to the fore. The Wildlife Trusts 30 Days Wild campaign shows promise as a large-scale intervention for improving public engagement with nature for well-being. The paper aims to discuss this issue.Design/methodology/approach In total, 273 people fully participated in a repeated measures evaluation comparing baseline measures of nature connection, health, happiness and conservation behaviours with measures post-30 days and 3 months.Findings There were sustained and significant increases for scores in nature connection, health, happiness and conservation behaviours. Those with lower scores at baseline in nature connection, conservation behaviours and happiness showed the most benefit. Older participants and those with higher baseline scores in conservation behaviours were the most likely to sustain their engagement with the campaign.Research limitations/implications Although the design and defined outcomes meet criteria for public health interventions, the self-reported measures, self-selecting sample and attrition are limitations.Originality/value The significant and sustained effects of the campaign on health, happiness and nature connection and conservation make this a promising intervention for improving human’s and nature’s well-being. The large community sample and naturalistic setting for the intervention make these data relevant to future interventions and policy. VL - 17 IS - 3 SN - 1746-5729 DO - 10.1108/JPMH-02-2018-0018 UR - https://doi.org/10.1108/JPMH-02-2018-0018 AU - Richardson Miles AU - McEwan Kirsten AU - Garip Gulcan PY - 2018 Y1 - 2018/01/01 TI - 30 Days Wild: who benefits most? T2 - Journal of Public Mental Health PB - Emerald Publishing Limited SP - 95 EP - 104 Y2 - 2024/04/26 ER -