Do you mean for the person to enjoy, or to garden in? - Merry

This is my first post, so I hope I am doing this right. I just saw this site while searching for help for my sister.

Here is a link that might be useful: A Gardening For The Blind site

I have not made one, but one of my blind friends critiqued mine when he came to visit.
I have two sets of small stairs, no handrails. A problem.
I have self installed pavers made from broken concrete. Although I love them, they are not comfortable if you are trying to use your feet or cane to figure out where the stairs are. The mix of gravel as a filling between the pavers is confusing.
Scented plants are appreciated but farther back in the garden. That way you don't sniff up a bee, lol.
Some sort of edging along the pathway, I have part with a 2' tall raised bed is a great guide.
Arches and other confining areas over a walkway for climbing plants need to be kept completely tied up or they can be annoying and dagle in one's face. The arches themselves can feel confining.
DON'T PLANT THORNY ROSES ON AN ARCH OR NEAR A WALKWAY. My pal got his shirt snagged!

GGG