The top and bottom border is 13 rows of garter stitch (approximately 1") and left and right border is 16 stitches of garter stitch. It's a lovely stitch pattern. Because I'm using a Sport-weight yarn, this is going to be a large project to tackle. I decided that I wanted the blanket to be at least 30" wide and 30" tall and cast on 209 stitches. This blanket, that is if I count my swatch gauge correctly, will have approximately 60,000 stitches. Crazy.
As of November 6, the blanket is 18 inches tall (over halfway there) and 30 inches wide - and it's only at 5 balls. This is by far the most intense project I've ever undertaken. It has to be comparable to knitting a sweater, right? Since it's just a square, it's not as though it looks like it's ever growing.
November 21, the blanket is 22" inches tall - 6 balls.