If you are adapting the layout of a garden for a person with Alzheimer's, you may find these tips and advice on my other articles helpful too.
Pathways should be smooth sound and as people with Alzheimer's and dementia do tend to lose physical skills and ability over time, wide enough to take a wheelchair, preferably without steep gradients or steep steps and free of clutter like plant pots. Handrails will help people who have difficulty walking and also act as a guide way to avoid confusion.
Access to a safe garden
designed for people with Alzheimer's and other forms of dementia, who might be restless, agitated and who like to walk a lot, can meet a lot of the needs for people with other
forms of dementia, and just as important, meet some of the needs of the carers, giving a carer, time to rest, time to reflect, time to remember, a break to relieve
tension, time for your separate pursuits and time to be your own person for a while.
It need not cost a fortune, but will give you both, the person with Alzheimer's and the person who Cares, something back.