I have a question for the hay bale specialist around here

At my ranch, I mixed a grass field with a tree farm field. have rows of trees with 6 meters between those, so I can grow grass as well.
So while the trees are growing up, I can mow the grass and collect it. I play with the Season mod, so as far as I understand, I need to use a tedder on the grass to let it dry and transform it into hay.
Question is: I would like to produce hay bales, to keep those over the winter without deteriorate. But the problem I have is that I cannot find a tedder that fits my 6 meters wide rows. Any idea how I could do this? Maybe I could collect the grass and make it dry somewhere else?
Any hint would be appreciated...
Thanks!