I have a border which is 4feet x 12feet.There is a bank that drops from the border into a beck.The other side of the beck goes onto a farmers field,often used for dog walkers. I have just bought two decent size laurels,a holly to act as screening. I have also bought a couple of dogwoods red colour to go at the front.Any ideas to fill up the border.I was thinking of chrocrosmia . I would be grateful if Anyone can advise .I can post a photo if needed. Thanks