Adding a border to crocheted blankets gives them a neat, finished appearance. The simplest border you can create is to work a basic crochet stitch on top of each stitch along the edges of the blanket. Not only does this type of border finish the blanket, it also creates a base for a more advanced edging pattern, if you wish to add one later. Select a single crochet, half-double crochet, double crochet or triple crochet stitch to work around the borders as well as the corners of your blanket.
Things You'll Need
Crochet one stitch into each stitch along the first edge of the crocheted blanket, using a hook and yarn that are similar in size to the hook and yarn used to make the blanket.
Stop when you reach the first corner stitch on the blanket.
Crochet three stitches into the corner stitch. If the blanket was made using a small gauge, you may have to tug the stitches slightly so that all three can fit into the corner. Alternatively, if the corner is made up of a line of chain stitches, make three stitches on top of the chain stitches.
Continue working across the second edge with one new stitch per stitch on the blanket. Work three stitches into the next corner. Do this for every edge and corner of the blanket to complete the border.