<p>Canada has seen rapidly rising numbers of asylum seekers, in the context of unprecedentedly high global displacement. Psychosocial interventions for asylum seekers (also know as refugee claimants) are supported by a growing body of evidence to support resettlement, but also as upstream, ecosocial mental health prevention. Arts-based interventions have shown promise, though there is limited understanding of the challenges of sustainability and implementing such interventions. This study examines the implementation process of one aspect of the Welcome Haven program, an ecosocial intervention program for refugee claimant families in Montreal, Quebec. Specifically, we focus on the implementation of the arts-based workshops for children through qualitative process evaluation, documenting parents’ and adolescents’ perspectives of the barriers and facilitators to participation. We interviewed 54 parents and 6 adolescents, identifying five themes: workshops’ advertisement, travelling to the workshop, age appropriateness, relevancy of activities, and trust in the team. We find that the design and implementation of arts-based and expressive workshops for asylum-seeking children and youth must involve contextualization within the local population and environment, as they show significant promise for mental health promotion where specialized services are limited.</p>