For example, if you opt for a medium-weight yarn, then use a US size I-9 (5. 5 mm) crochet hook.

Repeat this 1 more time.

Only do this for the first round of the square.

Switch colors before starting each additional round for a colorful square. Do not switch yarn colors at all to make solid color granny squares. Just keep working the next round using the same strand of yarn.

Only do this if you have switched yarn colors. If you are continuing to crochet your hexagon using the same color you started with, skip this.

Ideally, you should not choose the last space you created in the last round since this is the smallest chain 3 space in the round.

Repeat this sequence into the same space to complete the cluster.

Continue to work a cluster like this into each of the chain 3 spaces around the outside of the first square.

You have 2 completed rounds of your granny square. Repeat the process to make another square of this size, or work an additional round to make the square larger.

Work this stitch sequence into each of the corners of the granny square.

Work this sequence into each of the chain 3 spaces on the sides of the granny square. Repeat the sequence all the way around the square. Finish the square in the same way you finished the previous rounds with a slipstitch to connect the first and last stitches.

For example, if you want your blanket to measure 45 by 60 in (110 by 150 cm), and each square measures 5 by 5 in (13 by 13 cm), then you will need 9 rows of 12 squares each, which is a total of 108 squares.

After you have all of the granny square rows completed, sew down the edges of 2 rows to connect them. Keep attaching rows until your blanket is all in 1 piece. Make sure the squares are all facing in the same direction when you sew them together. Use the same color yarn as the outer round of the squares or a contrasting color yarn, if you prefer.

Try single crocheting around the edges of the blanket for a simple, narrow border. Work a decorative stitch into the edge of the blanket, such as shell stitch for a fancier touch.

Try single crocheting around the edges of the blanket for a simple, narrow border. Work a decorative stitch into the edge of the blanket, such as shell stitch for a fancier touch.