Background
Dementia is a growing global health concern, with behavioral and psychological symptoms (BPSD) contributing significantly to diminished quality of life and caregiver burden. Non-pharmacological interventions, such as gardening and nature-based therapies, are increasingly recognized for their therapeutic potential.
Objectives
This scoping review aimed to: (1) map existing evidence on gardening and garden-based interventions for individuals with dementia; (2) assess impacts on caregivers; (3) identify mechanisms of benefit; and (4) summarize effective design and implementation strategies.
Methods
Following Joanna Briggs Institute methodology and PRISMA-ScR guidelines, a comprehensive search was conducted across five databases. Studies were screened using Covidence. Inclusion criteria encompassed peer-reviewed studies where gardening was the primary intervention for people with dementia or their caregivers. Thirty-two studies were included, spanning qualitative, quantitative, mixed-methods, and review designs.
Results
Gardening interventions consistently improved psychosocial well-being, mood, and reduced BPSD. Evidence for cognitive benefits was mixed, with stronger support for preventive effects. Caregivers experienced reduced psychological distress and enhanced social support. Mechanisms of benefit included engagement, purpose, identity reinforcement, and sensory stimulation. Effective interventions emphasized active participation, co-design, and integration into routine care. Barriers included staff risk aversion, limited access, and environmental constraints.
Conclusions
Gardening and garden-based interventions offer flexible, person-centered strategies to enhance well-being in dementia care. Their success depends on meaningful engagement, supportive design, and organizational commitment. Future research should standardize outcomes, explore caregiver-focused models, and assess economic impact.
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