So it’s technique Tuesday here again at Hello Dolly Knitting, and the technique I’ll be showing you today is the horizontal mattress stitch seam. Like mattress stitch, horizontal mattress stitch joins two pieces of stocking stitch together leaving an invisible join. However, like the name suggests, horizontal mattress stitch is joined horizontally. For those of you who are not familiar with mattress stitch please check out my tutorial for mattress stitch here.
Horizontal mattress stitch is helpful when joining shoulder seams. It’s also a great alternative for grafting or kitchener stitch, working with cast on or bind off edges rather than live stitches.
So to start you’ll need to lay the two pieces of knitting you want to seam parallel to each other, with the right sides facing up. Using either a tail end, or a new piece of yarn, insert your needle underneath both legs of the first stitch or the ‘V’ of the first row on the first piece of knitting. See photo 1 below. For demonstration purposes, I’ve shown these steps a few stitches in and in a contrasting colour so it’s easier to see. Next, insert your needle between the two legs of the first stitch on the opposing piece of knitting. Remember, you’ll be looking at it upside down this time, so the stitch will be an upside down ‘V.’ See photo 2. Continue working back and forth keeping an even tension. See photo 3.
So that’s it, super easy! If you found this tutorial helpful, please don’t forget to share or re-pin it, as it really helps support my site.
If you want to know my preferred method for joining shoulder seams be sure to check out my Three Needle Bind off Tutorial here. Not only does it bind off but it also joins at the same time, which is super efficient!