Other than you will see it from two sides, the choice of materials, plants, trees, shrubs, etc. are up to the designer or homeowner. Make sure the beds slope away from the house to move water.
The corner lot landscaping has to be done with the help of small machines are with the hand. the corners can be cleaned with the help of machines and it can cleaned with the help of small brush.
When you are trying to do corner lot landscaping you will need to make sure your have enough cement. If you are short on the cement, you cannot complete the project.