Short, all season tree for small garden

Attached is my small backyard garden. the Japanese maple is not doing well, as you can see. can u suggest a few options for a nice all seasons blue evergreen or some tree that is colorful and there form spring…

privacy screen/hedge

sunny location. Oakville. poor soil. dry. I have a very small yard and would like to create more of a clean courtyard feel with better privacy. I’d like to have a privacy screen about 10-15 feet tall and as narrow…