What picking up stitches means and when you need it
Picking up stitches means using your needle and yarn to create new loops along an existing edge of your knitted fabric — usually along a bound-off edge, a side seam, or an armhole. You are not unraveling anything. Instead, you are anchoring fresh stitches to the fabric so you can knit in a new direction, typically to add a collar, a button band, or a sleeve cap.
You pick up stitches when a pattern tells you to, most commonly after you have finished the main body of a sweater or cardigan. The pattern will say something like "pick up and knit 24 stitches along the left front edge." This is different from casting on, because you are working into existing fabric rather than creating stitches from scratch.
The most common place to pick up stitches is along a vertical edge — the side of a sweater body, for example — or along a horizontal bound-off edge at the neckline. You may also pick up stitches along a curved edge like an armhole, though that requires a bit more care.
Key Takeaways
- Picking up stitches means creating new loops along an existing knitted edge so you can knit in a new direction, usually for neckbands, button bands, or sleeves.
- On a vertical edge, pick up roughly one stitch for every row; on a horizontal edge, pick up one stitch for every stitch in the bound-off chain.
- Use a needle one or two sizes smaller than your working needle to keep picked-up stitches tight and even.
- The working yarn should come from the ball, not from the cast-on tail, and you pull it through from back to front so the new stitch sits on top of the fabric.
- Uneven spacing is the most common mistake; count your picked-up stitches against the pattern number before you move on.
Choosing the right needle size and yarn
Use a needle one or two sizes smaller than the needle you used for the main fabric. If your sweater body is knit on a US 7 needle, pick up stitches on a US 5 or US 6. This keeps the picked-up stitches tight and prevents holes or loose loops along the edge.
The yarn you use should be the same weight and fiber as the rest of your project — do not switch yarns. Make sure you are working from the ball end of your yarn, not from a cast-on tail or a cut end. If you are picking up stitches in the middle of a project, tie on a fresh length of yarn if the working yarn is too short to reach comfortably.
Have your pattern nearby so you know exactly how many stitches to pick up. Patterns usually specify this number clearly: "pick up and knit 32 stitches" or "pick up 1 stitch for every row." If the pattern does not say, a common rule is to pick up roughly 3 stitches for every 4 rows on a vertical edge.
Picking up stitches along a vertical edge
A vertical edge is the side of your knitted fabric — the edge you see when you look at the side seam of a sweater body. This is the most common place to pick up stitches, and the technique is straightforward.
Hold the fabric with the right side facing you. Insert your needle from back to front (so the needle comes toward you) under the horizontal bar between the first and second stitch in from the edge. This bar sits just inside the selvage stitch. Pull your working yarn through, creating a new stitch on your needle. Repeat along the edge, working into the same horizontal bar on each row.
Work slowly and count as you go. If your pattern says to pick up 24 stitches along a 30-row edge, you will skip some rows — roughly one row out of every five. A common pattern is to pick up 3 stitches, skip 1 row, pick up 3 stitches, skip 1 row, and repeat. This keeps the spacing even and prevents bunching.
Once you have picked up all the stitches, check your count against the pattern before you knit the first row. If you are short by one or two stitches, pick up a stitch or two in the gaps between existing stitches. If you have too many, drop the extra stitches off the needle.
Picking up stitches along a horizontal bound-off edge
A horizontal edge is a bound-off row — the finished edge at the top of a neckline or the bottom of a ribbed cuff. Picking up along this edge is simpler than picking up along a vertical edge because there is a clear stitch structure to follow.
Hold the fabric with the right side facing you. Look at the bound-off edge and find the bumps or loops that make up each stitch. Insert your needle from back to front under the bump of the first stitch. Pull your working yarn through, creating a new stitch on your needle. Move to the next stitch and repeat.
On a horizontal edge, pick up one stitch for every stitch in the bound-off chain — no skipping. If the pattern says "pick up 28 stitches along the neckline," and the neckline has 28 stitches bound off, you pick up one stitch under each bump. This creates a clean, even line with no gaps.
Picking up stitches along a curved edge
Curved edges like armholes are trickier because the edge is not perfectly vertical or horizontal. You will need to pick up stitches along both the vertical side and the horizontal bound-off section of the curve.
On the vertical part of the curve, use the same technique as a vertical edge: pick up roughly 3 stitches for every 4 rows. On the horizontal part (where stitches were bound off), pick up one stitch for every stitch. At the corner where the vertical and horizontal sections meet, pick up an extra stitch or two to prevent a hole.
Count your total picked-up stitches and compare to the pattern. Curved edges often require small adjustments to the spacing, so do not panic if you need to add or drop a stitch or two to match the pattern number exactly.
Common mistakes and how to avoid them
The most common mistake is picking up stitches too loosely. If your picked-up stitches are loose and floppy, you will see gaps along the edge. To fix this, make sure you are pulling the yarn snug as you create each stitch. You can also go back and tighten the first few stitches by gently tugging on the working yarn.
Uneven spacing is the second most common problem. If you pick up stitches randomly without a plan, the edge will look wavy or bunched. Always count as you go and follow a pattern — pick up 3, skip 1, for example — so the spacing is consistent. Mark your edge with stitch markers every 10 stitches so you can count and adjust as you work.
Picking up too many or too few stitches is also straightforward to do. Before you knit the first row, lay your work flat and count the stitches on your needle. If the count does not match the pattern, add or drop stitches now rather than later. It is much easier to fix on the needle than to rip back after you have knit several rows.
Finally, make sure you are working into the right part of the edge. On a vertical edge, work into the horizontal bar just inside the selvage stitch, not into the selvage stitch itself. On a horizontal edge, work under the bump of each stitch, not into the stitch itself. This keeps the picked-up stitches aligned and prevents a messy, loose edge.
What to do after you pick up stitches
Once you have picked up all your stitches and verified the count, you are ready to knit. The first row after picking up is often a purl row, which creates a neat ridge and helps the picked-up stitches settle into place. Some patterns call for a knit row instead, or even a few rows of ribbing.
If you notice the picked-up stitches are loose or uneven after you knit the first row or two, you can tighten them by gently tugging on the working yarn as you work. Do this sparingly — too much tugging will distort the fabric. A light tug on the yarn every few stitches is usually enough.
If you made a mistake and picked up stitches in the wrong place or at the wrong tension, you can always rip back and pick up again. This is much easier to fix now than after you have knit several inches. Do not be afraid to start over if something does not look right.
Frequently Asked Questions
Do I have to pick up stitches in a specific direction?
You can pick up stitches from left to right or right to left — whichever feels more comfortable. Most knitters pick up from left to right, but there is no rule. The direction does not affect the finished result, only your comfort as you work.
What if I pick up too many stitches and cannot fix it by dropping them?
If you have significantly more stitches than the pattern calls for, rip back to the picked-up row and start over. It is faster and cleaner than trying to decrease your way to the right stitch count. Mark your edge with stitch markers before you pick up again so you can space the stitches more carefully.
Can I pick up stitches with a crochet hook instead of a needle?
Yes. Many knitters find a crochet hook easier to use for picking up stitches because the hook catches the yarn more easily than a needle point. Use a hook roughly the same size as your picking-up needle. Transfer the stitches to your knitting needle once you have picked them all up.
Why does my picked-up edge look loose and wavy?
Loose, wavy edges usually mean you picked up stitches too loosely or spaced them unevenly. Tighten your tension as you work, and use stitch markers to keep your spacing consistent. If the edge is already knit, you can rip back and pick up again with tighter tension.
What if the pattern does not say how many stitches to pick up?
Use the rule of three stitches for every four rows on a vertical edge, or one stitch for every stitch on a horizontal edge. If you are unsure, pick up fewer stitches rather than more — you can always add stitches later, but removing them is harder. Lay your work flat and count before you knit the first row.