What a ladder stitch is and when to use it

A ladder stitch is a hand-sewing technique that closes an opening in fabric with a seam that is nearly invisible from the outside. The thread runs inside the fold of the fabric on both sides of the opening, so it hides between the layers rather than crossing over the top. You use it to close the final opening after you have stuffed a pillow, toy, or cushion, or to repair a seam that has split without the repair showing.

The stitch works best on woven fabrics like cotton, linen, and quilting cotton. It is harder to use on stretchy knits or very thick fabrics, because the thread has less room to hide and the fabric does not hold the fold as cleanly. You will need a needle that fits through your fabric easily, thread that matches your fabric color, and a small opening (usually 2 to 4 inches) that you have left unsewn for stuffing.

Key Takeaways

  • The ladder stitch hides inside the fold of fabric on both sides of the opening, making the seam invisible from the outside.
  • You thread the needle through the fold of one side, then through the fold of the opposite side, moving along the opening in a zigzag pattern.
  • The stitch works best on woven fabrics with a 2 to 4 inch opening that you have left unsewn for stuffing.
  • Pulling the thread too hard will pucker the fabric and make the seam visible, so pull gently and only every few stitches.
  • Practice on scrap fabric first, because the stitch takes a few tries to feel natural and to judge how much tension to use.

Preparing your fabric and thread

Before you start, turn your fabric right-side out and stuff it fully. Leave the opening unsewn and position it so it lies flat in front of you. The two raw edges of the opening should be folded inward along the seam line, as if the opening were already sewn closed. If the edges are not folded in, fold them now and press them lightly with your fingers or an iron so they hold their shape.

Cut a length of thread about 18 to 24 inches long and thread your needle. Knot the end of the thread. Choose thread that matches your fabric color as closely as you can—a mismatch will show even if the stitch itself is hidden. If you cannot find an exact match, choose a shade slightly darker rather than lighter, because thread looks lighter once it is sewn.

Starting the ladder stitch

Bring your needle up through the fold of fabric on one side of the opening, about 1/4 inch from the corner. Push the needle straight into the fold so the knot stays hidden inside. Bring it back out about 1/4 inch further along the same fold. You have now made your first tiny stitch inside the fold.

Now cross to the opposite side of the opening. Insert your needle directly across from where you just came out, going into the fold of the other side of the opening. Push it straight in and bring it back out about 1/4 inch further along that fold. You have now made a stitch on the opposite side. This zigzag pattern—one stitch on the left fold, one stitch on the right fold—is the core of the ladder stitch.

Continuing the pattern and closing the opening

Keep alternating sides, making small stitches (about 1/4 inch each) inside the fold of each side. Do not pull the thread tight as you go. Let it lie loose so you can see what you are doing and so the fabric stays flat. After you have made 4 to 6 stitches on each side, gently pull the thread to draw the two sides of the opening together. Pull slowly and stop as soon as the opening closes—pulling too hard will pucker the fabric and make the seam visible.

Continue stitching and pulling in this rhythm: make a few stitches, then pull gently to close a small section of the opening. Work your way along the entire opening until you reach the far corner. The opening should close as you go, and from the outside you should see only a thin line where the two sides of fabric meet.

Finishing and hiding the knot

When you reach the end of the opening, make one final stitch inside the fold on one side. Before you tie off, bring your needle out through the fold and pull the thread so the needle slides back inside the fold. This hides the final knot inside the fabric. Tie a small knot at the end of the thread while it is still inside the fold, then push the needle back through the fold one more time and pull it out a few inches away from the opening. Trim the thread close to the fabric so the end disappears inside.

Step back and look at your work from the outside. The opening should be closed and the seam should be nearly invisible. If you see thread crossing the surface, you pulled too hard during stitching—this is normal on your first tries. The more you practice, the better you will judge how much tension to use.

Common mistakes and how to avoid them

The most common mistake is pulling the thread too tight, which puckers the fabric and makes the seam visible. Pull gently and only after every few stitches. If you have already pulled too hard and the seam looks puckered, you can sometimes fix it by gently stretching the fabric in the opposite direction while the thread is still damp, then letting it dry flat.

Another mistake is making stitches that are too long. If your stitches are longer than 1/4 inch, the thread will show on the outside and the seam will look loose. Keep your stitches small and even. A third mistake is not folding the raw edges of the opening inward before you start—if the edges are not folded, the thread will cross over the top of the fabric instead of hiding inside the fold. Always fold and press the edges first.

Practicing on scrap fabric

Before you use the ladder stitch on a finished project, practice on two pieces of scrap fabric sewn together with an opening left unsewn. Stuff the scrap lightly with fiberfill or scraps, fold the edges inward, and practice closing the opening. This lets you get a feel for how much tension to use and how to keep your stitches small and even without worrying about ruining a project.

Practice also teaches you to recognize the feel of the needle sliding through the fold—once you can do this without looking, the stitch becomes much faster and more accurate. Most people need 3 to 5 practice pieces before the stitch feels natural.

Frequently Asked Questions

Can I use the ladder stitch on a seam that is already sewn?

Yes, but you have to open the seam first by carefully cutting the thread and removing it. Once the seam is open, fold the edges inward and use the ladder stitch to close it again. This is useful for repairs when you want the seam to be invisible.

What if my thread keeps breaking?

Your thread is probably too long or you are pulling too hard. Cut shorter lengths (12 to 18 inches) and pull more gently. If the thread is old or low quality, it may break easily—try a fresh spool of thread made for hand sewing.

Does the ladder stitch work on stretchy fabrics like jersey or fleece?

It is harder to use on stretchy fabrics because the fold does not hold its shape as well and the thread is more likely to show. Woven fabrics like cotton work much better. If you must use a stretchy fabric, make very small stitches and pull very gently.

How do I match thread color if my fabric is a print or multicolor?

Choose a thread color that matches the dominant color in the print, or pick a shade that is slightly darker than the lightest color in the print. Test the thread on a scrap of your fabric in good light before you start sewing.

Can I use the ladder stitch to close a seam on the outside of a garment?

No—the ladder stitch is designed to hide inside folded fabric, so it only works on openings where both sides can be folded inward. For visible seams on garments, use a backstitch or a whip stitch instead.