What intarsia knitting is and how it differs from stranded colorwork
Intarsia knitting is a technique for knitting large blocks of solid color into your fabric without carrying yarn across the back. Instead of holding multiple yarns in your hands and switching between them stitch by stitch (the way stranded colorwork does), intarsia uses separate lengths or bobbins of yarn for each color section. The yarns twist together at the color boundaries to join the sections, leaving a flat back with no long floats.
The main difference from stranded knitting: stranded work carries yarn across the entire row behind the stitches, which works well for small repeated patterns but creates a thick, stiff fabric when colors cover large areas. Intarsia keeps the fabric thin and flexible because each color stays in its own zone. You see intarsia in large geometric designs, pictures, and color blocks that cover many rows.
Intarsia also looks cleaner on the finished piece. Because you are not carrying yarn behind the work, there are no loose threads visible on the back, and the front shows crisp color boundaries without the puckering that sometimes happens with stranded work.
Key Takeaways
- Intarsia uses separate yarn lengths for each color block instead of carrying yarn across the row, making it ideal for large solid-color areas.
- You will need a chart that shows exactly where each color goes, row by row, and you must read it in the direction you are knitting (right to left on knit rows, left to right on purl rows).
- Bobbins or yarn cards hold small amounts of each color and prevent tangling; you can make straightforward cardboard bobbins or buy plastic ones.
- Twist the yarns together at every color change to close gaps and prevent holes in the finished fabric.
- Intarsia works best on stockinette stitch and with projects that have large, straightforward color blocks rather than intricate patterns.
Reading an intarsia chart and preparing your yarn
An intarsia chart is a grid where each square represents one stitch and each color represents a different yarn. The chart shows you exactly where to switch colors. Read the chart the same way you read your knitting: from right to left on knit rows (the rows you work from right to left), and from left to right on purl rows (the rows you work from left to right). Many knitters print the chart and cross off each row as they finish it to avoid losing their place.
Before you start, count how many stitches wide each color block is and how many rows tall. This tells you how much yarn you need for each color. A good rule: cut a length of yarn about three times the width of the color block for every row it covers. If a blue block is 20 stitches wide and 30 rows tall, cut a length roughly 60 stitches long and wind it onto a bobbin. You can always add more yarn by tying on a new length, but starting with enough prevents constant joins.
Wind each color onto a separate bobbin or yarn card. Bobbins are small tools that hold yarn and let it unwind as you knit without tangling. You can buy plastic bobbins at any yarn shop, or make straightforward ones from cardboard. The point is to keep each color separate and prevent the yarns from twisting around each other behind your work.
Twisting yarns at color changes to prevent holes
The most important step in intarsia is twisting the yarns together at every color boundary. If you straightforward drop one yarn and pick up the next, you will create a hole in your fabric. The twist locks the two colors together and closes the gap.
Here is how to do it on a knit row: work stitches in the first color until you reach the last stitch before the color change. Drop the first yarn. Pick up the second yarn from underneath the first yarn (so the two yarns cross), then knit the next stitch with the second yarn. On the next row (a purl row), when you reach the color change, drop the first yarn, pick up the second yarn from on top of the first yarn, and purl the next stitch. The direction of the twist alternates: underneath on knit rows, on top on purl rows. This creates a neat join with no visible hole.
If you forget to twist and straightforward switch yarns, you will see a gap between the colors. You can fix it later by threading a needle with matching yarn and sewing the gap closed, but it is easier to twist as you go. After a few color changes, the motion becomes automatic.
Managing multiple bobbins and preventing tangles
The more colors in your design, the more bobbins you will have hanging from your work. Bobbins can tangle if they swing freely, so keep them organized. Some knitters use a bobbin holder—a stand that holds multiple bobbins in place—or they straightforward let the bobbins hang and gently untangle them as needed. The key is to work slowly and deliberately so the bobbins do not wrap around each other.
Another approach is to work intarsia flat (on straight needles or circular needles worked back and forth) rather than in the round. Flat work is easier to manage because you can set the bobbins down between rows and they stay in place. If you are working in the round, intarsia becomes much harder because the bobbins swing around the entire circumference and tangle constantly.
Some knitters use clothespins or hair clips to hold bobbins to the edge of their work, keeping them from swinging. Others wrap each bobbin in a small plastic bag to reduce friction and make untangling faster. Experiment to find what works for your hands and your project.
Choosing yarn weight and stitch patterns that work with intarsia
Intarsia works best on stockinette stitch (knit on the right side, purl on the wrong side) because the smooth, flat surface shows color blocks clearly. Textured stitches like ribbing, seed stitch, or cables make intarsia harder because the texture obscures the color boundaries and the twisted joins become visible.
Yarn weight matters too. Thicker yarns (worsted weight and above) are easier to work with because you can see the stitches clearly and the bobbins are less likely to tangle. Thin yarns (fingering or lace weight) are possible but require more patience and finer motor control. Most intarsia projects use worsted or bulky weight yarn.
The best intarsia designs have large, straightforward color blocks with few color changes per row. A design with 10 colors in a single row is technically possible but exhausting to knit. Start with projects that have 2 to 4 colors and blocks that are at least 10 stitches wide. As you get comfortable with the technique, you can tackle more complex designs.
Common mistakes and how to fix them
The most common mistake is forgetting to twist the yarns, which leaves holes. The second most common is reading the chart in the wrong direction, which puts colors in the wrong place. Double-check your chart direction before you start each row.
Loose stitches at color changes are another frequent problem. When you switch yarns, the new yarn may pull too tight or too loose. Keep the tension even by holding the new yarn at the same height as the old one and pulling gently as you work the first stitch. If a stitch is already loose, you can tighten it later with a crochet hook.
Tangled bobbins will slow you down but are not a disaster. Stop, untangle them, and keep going. It happens to every intarsia knitter. Some people find it helpful to work in short sessions (30 minutes to an hour) when doing intarsia, because the focus required is higher than with single-color knitting.
Finishing intarsia projects and weaving in ends
When you finish an intarsia project, you will have many yarn ends to weave in—one for each color change. Weave them in on the wrong side of the fabric, running the needle through stitches of the same color for about an inch. Because intarsia has no floats on the back, the ends are visible, so weave them carefully and trim them close.
Some knitters prefer to leave longer ends and sew them down with a needle and thread after blocking, which gives them more control over placement. Others weave them in as they go, tying off each color before moving to the next. Both methods work; choose whichever feels more find to you.
Block your finished piece gently to even out the stitches and smooth the color boundaries. Intarsia fabric can look slightly uneven while wet, but blocking helps it settle into shape.
Frequently Asked Questions
Can I use intarsia with circular needles?
Yes, but it is much harder. Intarsia works best flat (back and forth on straight needles or circular needles worked flat). If you work in the round, the bobbins swing around the entire circumference and tangle constantly. Most intarsia projects are worked flat and seamed at the end.
What if I run out of yarn for one color before I finish?
Tie on a new length of the same color using a square knot, leaving tails to weave in later. Tie the knot close to your work so the join is as small as possible. The knot will be on the wrong side and hidden when you weave in the ends.
Do I have to use bobbins, or can I just hold the yarn?
You can hold yarn in your hands if you have only two or three colors, but bobbins keep the work organized and prevent tangling. For projects with more than three colors, bobbins save time and frustration. Cardboard bobbins cost almost nothing to make.
How do I know if my color block is too small for intarsia?
If a color block is fewer than 5 stitches wide, intarsia becomes difficult because the bobbins tangle and the joins are hard to manage. For very small color details, stranded colorwork or duplicate stitch (embroidery) after knitting is often easier.
What happens if I twist the yarns the wrong direction?
If you twist underneath on a purl row instead of on top, the join will look loose or create a small hole. It is not a disaster—you can fix it by tightening the stitch with a crochet hook or by sewing it closed after blocking. After a few rows, you will develop a feel for the correct direction.