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How to crochet a large granny square blanket

Updated March 23, 2017

Crocheting and seaming together granny squares is a classic way to create a warm, heirloom afghan, as well as use up yarn left over from other projects. Because you can use any type of yarn , as well as any size of crochet hook, you can make each individual granny square as large as you'd like, and then sew together any number of granny squares into the blanket, creating a piece that as large as a king-size bed spread or as small as a lap blanket. This pattern creates a blanket that is approximately 140 inches wide by 175 inches long.

Chain 3 using the crochet needle and yarn, connect into a ring, then work two double crochet in the ring.

Chain 3, then work three double crochet in the ring three times, then chain 3 and slip stitch into the top of the first chain in the chain 3 to complete the first round.

Slip stitch over the double crochet stitches to the corner formed by a chain 3, then chain 3 (to act as a double crochet). Work two double crochet, chain 3 and then work three double crochet in that same corner.

Chain 1, work three double crochet ,chain 3 then three double crochet in the next corner formed by three chain stitches, repeat two more times, chain 1, slip stitch into the top of the first chain in the chain 3 to complete the second round.

Slip stitch over the double crochet stitches to the corner formed by a chain 3, then chain 3 (to act as a double crochet). Work two double crochet, chain 3 and then work three double crochet in that same corner.

Chain 1, work three double crochet ,chain 3 then three double crochet in the next corner formed by 3 chain stitches, repeat 3 more times, chain 1, work three double crochet in the next space created by the chain 1.

Chain 1 and slip stitch into the top of the first chain in the chain 3 to complete the third round.

Clip yarn; weave in ends using the yarn needle. This is your first granny square and should measure approximately 35 inches by 35 inches.

Repeat Steps 1 through 8 to complete 20 squares.

Sew squares together using a mattress stitch, four per row and five down in length, to form your granny square blanket. You can also use single crochet to connect the squares, if you'd prefer.

Tip

If your squares are not quite to measurement, you can always block them to size (as long as you are using yarn made of animal fibres).

Things You'll Need

  • Crochet hook (6.50mm, size 10 1/2/K)
  • 1,000 yards bulky weight yarn
  • Scissors
  • Yarn needle
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About the Author

A writer and professional lab assistant based in Seattle, Kate Bruscke has been writing professionally about health care and technology since 1998. Her freelance clients include "The Seattle Times," KGB.com, Reading Local: Seattle, Nordstrom and MSN/Microsoft. Bruscke holds a Master of Fine Arts from The School of the Art Institute of Chicago.