going sideways …
I’ve made and designed quite a few things where you work an edging sideways onto live stitches. Sometimes it’s as simple as an attached i-cord edging, other times it’s a bit more of a challenge.

For my Sunny Day Booties pattern, I really wanted the effect of the narrow stripes of bright, contrasting colours, but I had absolutely no desire to achieve those stripes with colourwork. It seemed like it would be much easier to knit the outer cuff of the bootie sideways, joining it to the live stitches at the top of the inner cuff as it’s worked.
Of course, to finish it off neatly and (hopefully!) invisibly, grafting is required. So, that means a provisional cast-on. There are a lot of different methods of casting on provisionally, like the crochet chain method, the needle & hook method (which is really just the crochet chain method worked directly on to your knitting needle), using Judy’s Magic Cast-On (JMCO) as a provisional cast-on, the long tail provisional cast-on, and this one, which I really like for the easy way you can retrieve your provisionally cast-on stitches.
Here’s how I do it in my Sunny Day Booties pattern …

Here’s the bootie with the Inner Cuff finished in the main colour (MC: yellow). I’ll use the MC tail as my waste yarn and use it and my first contrast colour (CC1: pink) to provisionally cast on (PCO) the stitches I need for the Outer Cuff. I’ll use the last method I linked to above. I’m working the PCO onto the needle with the MC tail attached.

Here, I’ve completed my provisional cast-on. The MC Inner Cuff stitches are on the right and the CC1 provisional stitches are to the left of those. Don’t forget to use the MC tail as your waste yarn to save on ends to weave in! When you work this PCO, your working yarn – the one you want to continue using, in this case the CC1, will form the stitches on the needle, and your waste yarn will run neatly through the bottom of them.

I’ve turned the needle around and I have my CC1 PCO ready to work row 1 of the Outer Cuff, with the MC Inner Cuff sts also on the needle. I work my booties using the magic loop method, so you can see half the Inner cuff sts on one needle and the other half on the other (the cable is out of shot here, to the left).

Here, I’ve worked row 1 of the Outer Cuff in CC1 and CC2 (turquoise). The Outer Cuff will be joined to the Inner Cuff by working together 1 Inner Cuff stitch and one Outer Cuff stitch in a decrease at the end of every even-numbered (right side) row. You can see the nice straight line of the MC waste yarn sitting under the CC1 PCO stitches.
When it comes time to undo your PCO, just gently ease the waste yarn out of the PCO sts. I like to use a much smaller diameter double-pointed needle to do this, then I transfer them to my working needle. You may have to realign some of the stitches as you transfer them over. Then you’re ready to graft your live stitches from the last row of the Outer Cuff together with the PCO stitches. Grafting, (commonly known as Kitchener stitch), is a method of joining two sets of stitches together so that the join is invisible (it looks just like another row of knitting). It’s most commonly used to finish the toes in socks knitted from the cuff down.
The finished booties have a nifty little striped cuff, with the stripes going sideways (perpendicular) to the rest of the bootie.
