This is a post to the question from Catherine how to make this natural looking grass. The secret is static grass . The designing of a landscape is very time consuming and the material not cheap, but if you do it often the investment worth every cent. To show you how to ,I give you this link .
But if you search in Google with the terms : static grass model railways you will find many more.
The picture of this Irish hut shows you the possibilities . It makes much fun,because you have different colors of grass .You can add weeds,wild grass and other things you like between the landscape,so it will never look boring. Naturally like in real size .