Learn How To Crochet Granny Squares Together

ByEmila Lorein


Master the Invisible Seam: How to Crochet Granny Squares Together Flawlessly

You’ve poured your heart into creating a vibrant collection of granny squares, each bursting with color and texture. But now comes the critical question: how to crochet granny squares together without bulky, distracting seams overshadowing their charm? If you want your granny squares to be the undeniable stars of your project, then the invisible seam method is your secret weapon!

This ingenious joining technique creates a flat, almost undetectable seam, making your finished crochet projects look incredibly polished and professional. Forget visible ridges or awkward lines – with the invisible seam, your squares will appear to magically fuse together. Let’s dive into mastering this essential skill!

Why Choose an Invisible Seam for Joining Granny Squares?
While many methods exist for connecting granny squares (like slip stitch, single crochet, or whip stitch joins), the invisible seam stands out because it:
  • Creates a virtually flat and undetectable join.
  • Allows your individual granny squares to truly shine.
  • Gives your finished project (like blankets, scarves, or garments) a professional, high-end look.
  • Minimizes bulk, which is ideal for wearable items or delicate blankets.

Gather Your Materials

Before you begin learning how to crochet granny squares together with this method, make sure you have these essentials:

  • Finished Granny Squares: Of course!
  • Yarn: A length of yarn for joining. Ideally, choose a color that matches one of the outer rounds of your granny squares for the most invisible finish. However, a contrasting color can be helpful when you’re learning to see your stitches clearly.
  • Crochet Hook: The same size you used for your squares, or slightly smaller for a tighter seam.
  • Tapestry Needle (Yarn Needle): Essential for weaving in ends and creating the invisible seam.
  • Scissors: For cutting your yarn.

Pre-Joining Tips: Preparation is Key!

For the best results when you crochet granny squares together, a little preparation goes a long way:

  • Block Your Squares: If possible, lightly block your granny squares before joining. This helps them achieve a uniform size and shape, leading to a much neater seam.
  • Weave in Ends: Weave in any loose ends on your individual squares *before* you start joining. This prevents a bulky back and ensures a cleaner finish.

The Invisible Seam Method: How to Crochet Granny Squares Together Step-by-Step

This method involves working with the back loops only and utilizing a zigzag motion with your tapestry needle. It creates a “fused at the seam” kind of look that you’ll absolutely love.

1. Orient Your Squares Correctly

Take your first two granny squares. Lay them out flat with their right sides facing each other. This means the side of the square you want to be visible in your finished project should be touching the right side of the other square.

2. Identify the Back Loop: The Golden Rule

This is where it can get a little confusing, so pay close attention! When the right sides are together, you’ll be looking at the wrong sides of both squares.

Remember this: The back loop is *always* the loop on the back side of that specific granny square.

When you look at the top edge of a granny square, you’ll see two loops for each stitch – the front loop (closest to you) and the back loop (furthest from you). Since your squares are wrong-sides-out for joining, the “back loop” on each square will be the loop furthest from the seam line and closer to the center of each square, as you hold them.

3. Begin the Join

Thread your chosen joining yarn onto your tapestry needle. Start with the very first stitch (or chain space) on the top edge of both squares.

  • Insert your needle through the back loop only of the first stitch on the top square.
  • Then, insert your needle through the back loop only of the corresponding first stitch on the bottom square.
  • Pull your yarn through, leaving a tail of a few inches to weave in later. You’ve made your first connection!

Watch the Invisible Seam in Action!

Seeing is believing! This video tutorial provides an excellent visual guide to how to crochet granny squares together using the invisible seam method, including how to identify those tricky back loops.

4. Master the Zigzag Stitch

Instead of a simple whip stitch, the invisible seam relies on a zigzag motion to keep it flat and, well, invisible. After your initial connection:

  • Move to the next stitch. Insert your needle into the back loop only of the next stitch on the *bottom* square.
  • Then, bring your needle across to the next stitch on the *top* square and insert it into its back loop only.
  • Pull your yarn through, creating a gentle zigzag.

A Closer Look at the Back Loops

This image illustrates the specific back loops you should be targeting on each square to achieve that perfect invisible join.

Close-up showing how to crochet granny squares together by identifying and working into the back loops only for an invisible seam.

5. Continue Across the Seam

Keep working in this zigzag fashion, catching the back loop of the next stitch on the bottom square, then the back loop of the next stitch on the top square, and pulling the yarn through. Maintain an even tension, not too tight, not too loose. When you finish a row of joining, secure your yarn and weave in the ends.

Expert Tips for a Perfect Invisible Join

Yarn Length: Comfort vs. Ends

For comfort, many crocheters prefer to work with a cut of yarn that’s about two feet long. This prevents tangling and makes the process more manageable. However, if you want to minimize the number of ends you create (and have to weave in later), you have a couple of options:

  • One Long Cut: You can try to use one very long cut of yarn for an entire row or section of joins. This can be difficult to work with as the yarn tends to tangle, but it does reduce ends.
  • The Magic Knot: This clever knot allows you to seamlessly add new yarn to your working strand without creating additional ends to weave in. It does create a small knot in your project, which can occasionally snag, but it’s often negligible after you pass it.

Choosing Your Seaming Yarn Color

For the truly most invisible seam, choose a yarn color that closely matches one of the colors in the outer rounds of the granny squares you are joining. If your squares have a consistent border color, use that. If they are varied, pick a neutral or a color that blends well with both squares.

Pro Tip: When learning how to crochet granny squares together, using a contrasting yarn color for your invisible seam can actually be beneficial. It allows you to clearly see where your stitches are going and helps you understand the mechanics of the zigzag more easily. Once you’re comfortable, switch to a matching color for truly seamless results!

Joining Multiple Squares & Perpendicular Seams

The beauty of this method is its consistency. When you need to add the next two squares in your project, simply lay them out flat, right sides together, and start with the first stitch again, zigzagging back and forth using those back loops only.

When your horizontal and vertical joins meet (at an intersection point in your blanket, for example), just keep going as if the intersection weren’t even there. The zigzag stitch will seamlessly cross the perpendicular join, maintaining the flat, invisible look.

Beyond the Join: Your Crochet Journey Continues!

Mastering how to crochet granny squares together with the invisible seam will elevate all your future granny square projects, from cozy blankets and throws to stylish garments and accessories. Practice makes perfect, so don’t be afraid to try it out on a few scrap squares first.

Now, go forth and create stunning, seamlessly joined granny square masterpieces!

More Pattrens