My character (setting is present day Japan) developed hemophobia (more especifically, vasovagal hemophobia, meaning she faints at the sight of blood) after car crash. According to my research, people with hemophobia avoid activities that might result in injury. Then again, I also read it might be different for every person. Attempts at treatment through cognitive-behavioral therapy are being made, with no success.
I imagine the character enjoying gardening, but I don't know if it'd be possible with their condition. I noted in my writing my character's always very careful performing any activities that might result in injury, rather than avoiding them altogether.
I googled hemophobia, gardening, hemophobia and outdoors and living with hemophobia.