Flat Double Crochet Join: A Step-by-Step Tutorial


Granny squares are a versatile and popular crochet motif, perfect for blankets, bags, and more. Once you've created your granny squares, the next step is to join them together using a sturdy and attractive method. One of the most popular join methods is the flat double crochet join, which creates a flat and seamless appearance.


  • Yarn
  • Crochet hook
  • Yarn needle (optional)

Step-by-Step Instructions

  1. Position the Squares: Place the two granny squares next to each other, aligning the edges that you want to join.
  2. Insert Hook: Insert the crochet hook into the first stitch of the top square.
  3. Yarn Over: Yarn over the hook.
  4. Insert Hook into Bottom Square: Insert the hook into the corresponding stitch on the bottom square.
  5. Yarn Over and Pull Through: Yarn over the hook again and pull the yarn through the stitch on the bottom square.
  6. Yarn Over and Pull Through: Yarn over the hook a third time and pull the yarn through both loops on the hook, completing the double crochet stitch.
  7. Repeat Steps 5-6: Continue repeating steps 5 and 6, inserting the hook into alternate stitches on both squares and completing double crochet stitches.
  8. Slip Stitch: When you reach the last stitch on the edge, slip stitch into the first stitch of the top square to secure the join.
  9. Cut and Weave in Ends: Cut the yarn and weave in any loose ends.


There are several variations of the flat double crochet join, including:

  • Invisible Join: This method uses a smaller hook and stitches into the back loops of the stitches, resulting in a less visible seam.
  • Chain Join: This method involves chaining between each double crochet stitch, creating a slightly more flexible join.
  • Slip Stitch Join: This method uses slip stitches to join the squares, resulting in a very flat and sturdy seam.


The flat double crochet join is a versatile and easy-to-learn method for joining granny squares. By following these step-by-step instructions, you can create a seamless and sturdy connection between your squares. Whether you're making a blanket, bag, or other project, this join method will help you achieve a professional-looking finish.

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