What picking up stitches means and when you need it
Picking up stitches means creating new loops along an existing edge — usually the side of a finished piece, a cast-on edge, or a bound-off edge — so you can knit in a new direction from there. You do this when you want to add a collar to a sweater, knit sleeves onto an armhole, make a border around a blanket, or turn a flat piece into something three-dimensional.
The edge you pick up from is called the pickup edge. The stitches you create are called picked-up stitches. You work them with a needle and yarn, and they become the foundation row for whatever you knit next. Done well, picked-up stitches look intentional and sit flat. Done poorly, they pucker, gap, or create a visible line where they shouldn't.
Most knitters pick up stitches along a vertical edge (the side of a piece) or along a horizontal edge (a cast-on or bound-off row). Each requires a slightly different approach because the structure of the knit fabric is different in each direction.
Key Takeaways
- Picking up stitches along a vertical edge usually means picking up one stitch for every row, or one for every 1.5 rows if the edge looks too tight.
- Along a horizontal edge, you pick up one stitch in each stitch of the cast-on or bound-off row, or skip stitches if the pattern tells you to.
- Use a needle one or two sizes smaller than your working needle to keep picked-up stitches from stretching out.
- The working yarn should come from the same ball or skein you are using to knit the new section, not from the old piece.
- Practice on a swatch first — picking up stitches is a skill that improves with repetition and feels awkward at first.
Picking up stitches along a vertical edge
A vertical edge is the side of your knitted piece — the edge you see when you look at the sweater from the side. This is the most common place to pick up stitches, because it is where you add sleeves, neckbands, and button bands.
Insert your needle under the horizontal bar that sits between the first and second stitch in from the edge. This bar is part of the stitch structure and is visible if you look closely. Pull your working yarn through to create a new loop on your needle. Move down one row and repeat. You are creating one picked-up stitch for each row you pass.
If your picked-up edge looks too tight or bunched, you may have picked up too many stitches. Try picking up one stitch for every 1.5 rows instead: pick up a stitch, skip the next row, pick up a stitch, skip the next row, and so on. This is common when the edge is very tall or the yarn is thick. Your pattern should tell you the ratio to use.
Work slowly and keep your tension even. Picked-up stitches that are too loose will create holes; stitches that are too tight will pucker the edge. If you make a mistake, drop back and redo that section rather than trying to fix it later.
Picking up stitches along a horizontal edge
A horizontal edge is a cast-on or bound-off row — the top or bottom of your piece. You pick up here when you want to add a border, turn a flat rectangle into a tube, or attach a collar to a neckline.
Insert your needle under the bump that sits just below each stitch on the cast-on or bound-off row. This bump is the horizontal loop that forms the stitch. Pull your working yarn through. You are picking up one stitch for each stitch in the original row, unless your pattern tells you to skip stitches.
If you are picking up along a cast-on edge, the bumps are usually straightforward to see and reach. If you are picking up along a bound-off edge, the bumps are smaller and sit closer together. Work with good light and use a needle that fits easily under each bump without splitting the yarn.
Choosing the right needle size for picking up
Use a needle that is one or two sizes smaller than the needle you used to knit the main piece. This prevents picked-up stitches from stretching out and creating a loose, wavy edge. Once you have picked up all your stitches, you can switch to your regular working needle for the next row if your pattern calls for it.
A smaller needle also makes it easier to control your tension while you are picking up. Your hands have less room to move, which means less variation in stitch size. This matters because uneven picked-up stitches are visible and hard to fix later.
Using the right yarn and working direction
Always pick up stitches using the working yarn — the yarn attached to the ball or skein you are about to knit with, not yarn from the finished piece. This ensures the color and texture match, and it means you do not have to weave in an extra end later.
Pick up stitches in the direction you will knit. If you are adding a collar to a neckline and you plan to knit the collar downward, pick up stitches from right to left (or left to right, depending on your pattern). If you are adding a sleeve and you plan to knit the sleeve downward from the armhole, pick up stitches around the armhole in the direction that makes sense for your pattern.
Some patterns specify the direction. If yours does not, pick up in whichever direction feels natural to you — the result will be the same.
Common mistakes and how to avoid them
The most common mistake is picking up too many stitches, which creates a wavy, ruffled edge. Count the rows or stitches on your pickup edge before you start, and divide by the ratio your pattern gives you. If your pattern does not specify a ratio, use one stitch per row on a vertical edge, or one stitch per stitch on a horizontal edge, and adjust only if the edge looks wrong.
Another mistake is picking up stitches too loosely. If you can see gaps between your picked-up stitches and the edge, tighten your tension on the next row by working the first stitch of the new row through the back loop, or by knitting the first two rows tighter than usual.
A third mistake is picking up from the wrong part of the stitch. On a vertical edge, pick up from the bar between stitches, not from the middle of a stitch. On a horizontal edge, pick up from the bump below the stitch, not from the stitch itself. If you pick up from the wrong place, the edge will look sloppy and uneven.
Practice on a swatch before your finished piece
If you have never picked up stitches before, knit a small rectangle and practice picking up stitches along all four edges. This takes 20 minutes and teaches you what the edge should feel like and what the stitches should look like when you do it right.
Knit a 4-by-4-inch square in stockinette stitch. Pick up stitches along one vertical edge, knit a few rows, and bind off. Look at the result. Does the edge look smooth and intentional, or does it pucker or gap? Adjust your tension or your stitch count on the next edge and try again. By the time you finish all four edges, you will have a feel for the technique and will be ready to use it on a real project.
Frequently Asked Questions
How many stitches should I pick up?
Your pattern will tell you the exact number. If it does not, count the rows or stitches on your pickup edge and use one stitch per row (on a vertical edge) or one stitch per stitch (on a horizontal edge). If the edge looks too tight or too loose after you pick up, you can rip back and try again with a different ratio.
Can I pick up stitches with a crochet hook instead of a needle?
Yes. A crochet hook can be easier to use because it is smaller and more pointed, and you can pull yarn through more easily. Once you have picked up all your stitches, transfer them to a knitting needle and continue knitting. This method is especially useful for picking up along a bound-off edge, where the bumps are small and tight.
What if I pick up stitches in the wrong direction?
Rip back and pick them up again in the correct direction. It is faster than trying to fix the problem later. If you do not realize the mistake until you have knitted several rows, you can cut the yarn, unravel back to the picked-up row, and start over from there.
Do I need to pick up the same number of stitches as the edge has rows or stitches?
Not always. Your pattern will specify if you need to pick up fewer stitches than the edge has rows. This is common when you are picking up along a long edge and want the new section to be narrower. Follow your pattern's instructions for the pickup ratio.
How do I pick up stitches in the corners of a neckline?
Pick up stitches along the straight edges first, then pick up one or two stitches in each corner stitch, depending on how sharp the corner is. On the next row, you can decrease at the corners to shape the neckline. Your pattern should specify how many stitches to pick up at corners.