How to join granny squares with single crochet in the back loops

Join finished granny squares with a single crochet seam worked through the back loops only. The result is a flat, textured join that shows on both sides. It suits blankets, cardigans, bags and tops, and you only need a hook and matching yarn.

How to Join Granny Squares | Single Crochet Back Loop Only, by Christina | Citybrightknits on YouTube. 23 min 1 s.

8 chapters. Tap a step to jump to it.Chapters from the creator
Video length
23 min 1 s
Time to do it
30 minutes
Difficulty
Medium
Steps
9

What you need

Steps

  1. Lay your granny squares right side up on a flat surface. Pair them so the edges you want to join sit next to each other, with corners lined up.

  2. Place the two squares together with right sides facing, or keep them flat side by side, depending on the look you want. Pin or mark the corners so they do not shift.

  3. Make a slip knot on your hook with the joining yarn. Insert the hook through the corner stitch of the first square to begin the seam.

  4. Work single crochet stitches along the edge, going through the back loop only of each stitch on both squares. Keep the tension even so the seam does not pucker.

  5. Check the join as you go. The back loop seam gives a raised, textured line on the front and a flatter look on the back.

  6. Continue the single crochet seam to the end of the edge, working the last stitch into the corner. Fasten off or leave a loop to carry on.

  7. Bring in the next pair of squares and line them up against the joined piece. Join the next sides the same way, matching corners.

  8. Crochet across the crossing points where seams meet. Work into the corner stitches so the joins sit neatly together.

  9. Repeat for the remaining sides until all squares are joined. Weave in the yarn ends with a tapestry needle and block the piece lightly.

Tips and common mistakes

Keep your joining yarn the same weight as the squares or the seam will look bulky.

Count stitches on both squares before you start so the edges match and the seam stays straight.

Do not pull the seam tight. Loose, even tension keeps the join flat.

Try a contrasting yarn colour if you want the textured seam to stand out.

Questions

Do I need the same yarn as the squares?

No. Any yarn of a similar weight works. A matching colour hides the seam, and a contrasting colour makes it a feature.

Can I use this join on a blanket?

Yes. The single crochet back loop join works on blankets, cardigans, bags and tops. Just keep the tension even across long edges.

Which side of the join shows?

The back loop seam gives a raised line on the front and a flatter finish on the back, so decide which side you want facing out before you start.

This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.

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