Question about stone walls?

[gabagool]

1. How do you rotate the stone walls?
2. How come I can't find a place to put down the stone walls (around my farm)? It's all showing a red block instead of green, like everywhere.
What's the deal?

[Loftar]

Are you close enough to the place you want to put the wall?

[Ch@Rl3$]

1st right click to rotate the wall
2nd it must be close to you to put the wall.