Here's a picture of the box DH made for me to grow grass in during the months when the girls aren't allowed in the yard to free range. I have too many flower beds and a garden for them to run through. Late summer I usually give in and let them out while I'm outside with them to keep a "hawk" eye on them so nothing gets them. The box has worked wonderful and it's the first place they check every morning. Now I've also thrown some of the rye grass seed along the fence border to give me easy access to more to pull and throw to them. The box is about 8 feet long and 1 1/2 feet wide I think. The poultry fencing on top keeps them from killing it.