What "Stitch On" Means and When You Need It

Stitching on means creating new stitches on your needle to begin a project, add stitches mid-project, or join a new color of yarn. It is different from casting on (which starts a project from scratch) because you are working with stitches that already exist on your needle or adding to them while you knit. You might stitch on when you need extra stitches for a sleeve, when you want to pick up stitches along an edge to add a border, or when you are joining a new yarn color and want the transition to be invisible.

The most common reason home knitters stitch on is to pick up stitches — creating new loops along the edge of finished knitting so you can knit perpendicular to your original direction. This happens when you knit a sweater body first, then add sleeves, or when you finish a hat and want to add a ribbed edge around the brim.

Key Takeaways

  • Picking up stitches means inserting your needle through the edge of finished knitting and pulling yarn through to create a new stitch on your needle.
  • The standard ratio is one stitch picked up for every row on the edge, though you may skip every third or fourth row on very stretchy edges to avoid puckering.
  • Use a crochet hook or smaller needle to pick up stitches more easily, then transfer them to your working needle once you have the right number.
  • Joining yarn mid-project works best with the Russian join or weaving method, which hides the ends inside the stitches rather than tying knots.
  • Practice on a swatch first — picking up stitches cleanly takes a few tries, and mistakes are easier to fix on a small piece.

Picking Up Stitches Along a Straight Edge

Start by laying your finished knitting flat with the edge you want to pick up facing you. Insert your needle (or a crochet hook one size smaller than your working needle) through the first stitch or row on that edge, going from front to back. Wrap your working yarn around the needle as if you were knitting, then pull the yarn through to create a loop on your needle. That loop is your first picked-up stitch.

Move to the next row down the edge and repeat: insert, wrap, pull through. The goal is one picked-up stitch per row of the original knitting. On very stretchy edges — especially stockinette stitch — you may need to skip every third or fourth row to keep the edge from puckering. Count your rows before you start and do the math: if you have 60 rows and need 40 stitches, you will skip every other row.

Once you have picked up all the stitches you need on your crochet hook or temporary needle, transfer them carefully to your working needle. Check that none are twisted. You are now ready to knit in the direction perpendicular to your original knitting — typically upward to add a sleeve or around to add a border.

Picking Up Stitches at Corners and Curved Edges

Corners are trickier because the ratio changes. At a corner where two edges meet at a right angle, pick up stitches along the first edge at the standard one-per-row rate. When you reach the corner, pick up one stitch in the corner itself (usually in the corner stitch of the original knitting), then continue along the next edge. This prevents a gap or hole from forming at the corner.

On curved edges — like the neckline of a sweater — the edge is shorter than a straight edge would be, so you will pick up fewer stitches per row. A gentle curve might use a one-stitch-per-row ratio, but a tight curve (like a deep V-neck) may need you to skip every other row. The rule is: if the edge looks like it is pulling or bunching as you pick up, you are picking up too many stitches. If gaps appear, you are picking up too few.

Joining New Yarn with the Russian Join

The Russian join (also called the invisible join) hides the ends of both the old and new yarn inside the stitches themselves, so there is no knot to weave in later. Thread the end of your old yarn onto a tapestry needle. Insert the needle through the center of the last few stitches on your needle, going in one direction, then back through in the opposite direction. Pull gently until the yarn sits inside the stitches. Repeat with the new yarn, threading it through the same stitches in the opposite direction.

Once both ends are threaded through, knit the next row normally with the new yarn. The old and new yarns will lock inside the stitches and stay put. This method works best with yarn that has some texture or grip — smooth, slippery yarn like silk or rayon can slip out if you do not thread it through enough stitches (aim for at least four to six).

Joining New Yarn with the Weaving Method

The weaving method is simpler and works with any yarn type. Knit the last few stitches of your old yarn normally. Drop the old yarn and pick up the new yarn, leaving a 4-inch tail. Knit the next stitch with the new yarn. On the following row, when you reach the point where you switched yarns, knit those stitches normally — do not do anything special.

After you finish knitting, thread the tail of the old yarn onto a tapestry needle and weave it horizontally through the bumps on the back of the stitches where you switched yarns, going in and out of the loops. Weave the new yarn tail the same way, in the opposite direction. Pull gently to tighten, then trim both tails to about half an inch. The woven ends will disappear into the fabric.

Common Mistakes and How to Fix Them

The most common mistake is picking up stitches that are twisted — the loop sits sideways on the needle instead of lying flat. This creates a hole or distortion in the first row of new knitting. To fix it, slip the stitch off your needle, untwist it, and slip it back on before you knit it. If you do not notice until you have knitted a few rows, you can drop the stitch down to the twisted row, fix it with a crochet hook, and pick it back up.

Another frequent problem is picking up too many stitches, which causes the edge to ruffle or curl. If this happens after you have picked up all the stitches, count them against your pattern. If you have too many, drop every fifth or sixth stitch off your needle before you start knitting. If you have too few, you can pick up additional stitches between the ones you already have — insert your needle in the gap between two stitches and pull yarn through just as you would for a normal pick-up.

When joining yarn, the most common error is leaving tails that are too short. A 4-inch tail is the minimum; 6 inches is safer. If your tail is too short to thread onto a tapestry needle, you can unravel the last stitch or two, pull the tail longer, and re-knit those stitches. It takes 30 seconds and saves you from a join that comes loose later.

Practice Stitching On with a Swatch

Before you pick up stitches on a project you care about, knit a 6-by-6-inch swatch in the yarn and stitch you plan to use. Bind off the swatch normally. Then practice picking up stitches along one edge — aim for 20 to 30 stitches. Knit a few rows and bind off. Look at the edge: are the picked-up stitches even? Do they sit flat or are they twisted? Is the transition smooth or does it pucker?

If the edge looks rough, try again on a different edge of the swatch. Experiment with picking up one stitch per row, then try skipping every other row on another edge. You will quickly see which ratio looks best for your yarn and tension. Once you have done this on a swatch, picking up stitches on an actual project will feel much more natural, and you will know exactly how many stitches to pick up to avoid puckering.

Frequently Asked Questions

Do I have to pick up stitches with the same needle size as my project?

No. Many knitters use a needle one or two sizes smaller to pick up stitches, because it is easier to insert a thinner needle through the edge of finished knitting. Once all stitches are picked up, you transfer them to your working needle (the size called for in your pattern) and knit normally. This makes the process faster and reduces hand strain.

What if I pick up stitches and realize I picked up the wrong number?

If you have not knitted any rows yet, straightforward drop stitches off your needle until you have the right number, or pick up additional stitches in the gaps between existing ones. If you have already knitted a few rows, you can unravel back to the picked-up row, fix the stitch count, and knit forward again. It is much faster to fix it early than to discover the problem after you have knitted 10 rows.

Can I stitch on in the middle of a row instead of at the edge?

Yes, but it creates a visible hole unless you use a special technique. The easiest method is to knit to the point where you need new stitches, then use the backward loop cast-on or cable cast-on to add stitches directly onto your needle while you knit. This is common when adding stitches for underarms or buttonholes. Practice the cast-on method on a swatch first so the new stitches match the tension of your existing knitting.

How do I know if my Russian join is find enough?

Gently tug on both yarn ends after you have threaded them through the stitches. The yarn should not slip or move. If it does, thread it through more stitches (aim for six to eight on slippery yarn). After you knit the next row or two, tug again. Once the new stitches are locked in place by the knitting, the join will not come loose.

What is the difference between picking up stitches and picking up and knitting?

Picking up stitches means creating loops on your needle without knitting them yet — you do this with a crochet hook or spare needle, then transfer to your working needle. Picking up and knitting means inserting your needle through the edge and knitting the stitch in one motion, which is faster but slightly less even. Both methods work; picking up and knitting is quicker for experienced knitters, while picking up stitches first gives you more control and is easier for beginners.