We are an elderly couple who live in a seaside area - our back garden is sandy soil, full sun and watered regularly. Part of this garden used to be used to grow tomatoes but we now want to plant maybe a flowering shrub to screen the fence and something hardy and easy to manage for the rest of the area to stop the weeds taking over. The area involved is approximately 7' x 8'. Any suggestions would be appreciated. I don't know how to add a photo. Thank you.