The bumpy texture of
garter stitch means that you can use just about any increase or decrease method you like and it will virtually disappear into the surrounding stitches.
Not exact matches
This blanket is knit on a bias in
Garter Stitch, which
means that you're actually working on a diagonal rather than knitting a straight square or rectangle.
Knitting
garter stitch flat
means you can knit every
stitch of every row, but things are different when working in the round because you're working the right side of the fabric every round.