The easiest way to connect crochet squares is to slip stitch or single crochet them together. This can often be done right at the same time you are working on your project. Crochet seams create a small ridge on the back side of your work. To avoid this you can sew (or weave) crochet squares together with a needle and thread. If you are making a lace pattern, you may want to connect crochet squares at certain points, as opposed to creating an entire seam along their sides.
* Connecting Squares with Crochet Seams
~ Slip Stitch: Match two squares, right sides together. Make a slip knot on your crochet hook if you are not joining squares while working on your project. Join yarn through the corner of both squares. Work your way down the seam by inserting your hook through both motifs. Wrap the yarn around your hook and bring it back through the other side. Pull it all the way through the loop on your hook so you only have one loop remaining on your hook at all times. Finish off by cutting a tail from your yarn and pulling it through the last loop on your hook.
~ Single Crochet: Match two squares, right sides together. Make a slip knot on your crochet hook if you are not joining squares while working on your project. Join yarn through the corner of both squares. Single crochet through each stitch down the seam. Make a single crochet by inserting your hook in the desired stitch. Wrap the yarn around your hook and pull it back out so you have two loops on your hook. Wrap the yarn around your hook and pull it through both loops on your hook. Repeat this for each stitch in your seam.
* Sewing Crochet Squares Together
There are a few different ways to sew crochet squares together. Some make your work look almost seamless, while others create a ridge where the seam connects your crochet squares. Use a yarn needle and thread to sew or weave crochet squares together. Many common embroidery stitches can be used to sew crochet squares together, however a few are preferred by avid crocheters.
~ Overcast Stitch: Work the overcast stitch by encircling the top edge of each motif. Pass your needle over the right motif, slide it back left under both edge stitches and gently pull allowing tension to remain even in your work. Keep your stitches even as you pass over and under the edges of your seams. Repeat this process down the length of your seam. Finish off by weaving your tail back through the finished seam.
~ Backstitch: Hold motifs with their right sides together. Pull up your needle at the starting point and work a horizontal line, up and down like dashes along the inside edge of your work. Backstitch is worked evenly over and under individual crochet stitches. It is important to keep this stitch close to the edges and work between stitches, so your seam doesn’t fray your work.
~ Flat woven seam: Work the flat woven seam by inserting your needle under the first stitch of your seam (on the right motif), and then come back under the first stitch of your seam on your left motif. Continue moving back and forth along the diagonal, weaving back and forth like you are lacing a shoe.
~ Ladder Stitch: Zigzag your seam back and forth over and under individual crochet stitches. Pull your needle up at your starting point, weave it under your first crochet stitch, cross over to the other motif and weave it under the next crochet stitch, moving back and forth in a zigzag pattern, under the actual crocheted stitches in your pattern.
* Connect Crochet Lace Squares Together
Lace squares sometimes have delicate curves and points that need to be shown off. When you connect crochet lace squares you may not want to make a full seam along the side. To avoid this you can add chain stitches in between your slip or single crochet stitches. You can also connect your squares at specified points throughout your project.
~ Single Crochet plus Chain: Match right sides of your motifs together and join squares at the corners. Anchor them with a single crochet. Consider your pattern and chain to the next point that you want to add a single crochet stitch.
~ Picot Stitch: Use picot stitch to join individual points on square motifs, as opposed to connecting the full length of your seam. Slip stitch on your hook and join at the desired point of your square. Chain one, insert hook in desired stitch of your second motif and pull yarn through all loops on your hook.
Picot stitch is also used to join unfinished squares together. When you are in the process of the final round for one of your square motifs, match a second (finished) motif at the desired point. Use the picot stitch to join motifs; then return to your unfinished motif and continue crocheting until you come to the next joining point in the pattern. This works particularly well for joining four corners in a lacey pattern. It makes the corners secure while leaving the lace work open.
Whether you are connecting classic granny squares, lacy daisy squares or intricate three-colored squares, these connecting methods will work for you. There are so many square motif patterns that can be joined to make everything from hearts to blankets and garments. Your final project will be the determining factor in how you connect crochet squares together, and it will depend upon your vision of the finished piece.