If it can't be placed in an adjacent square, yes.
Otherwise the rules say to place it in an adjacent square, as quoted by normalview.

I'm just giving you the answer I got.

Interesting. I wonder if the ruling changed (click here for references to the ruling) or if nbperp just forgot the old ruling. (If it did change, it's something that should go in the Player's Guide.)

Harpua did get that answer from me, but I had not looked up the quote that normalview had - it is on point and accurate.

I'd like to apologize to Harpua for the confusion.