What Intarsia Knitting Is and Why It Works Differently
Intarsia knitting is a method of working with multiple yarn colors in the same row without carrying unused colors across the back of your work. Instead of stranding yarn (the technique used in Fair Isle), you use separate bobbins or lengths of yarn for each color block, twisting them together where colors meet to prevent holes. The result is a flat fabric with no loose strands on the back, which makes intarsia ideal for large blocks of solid color — think a bird on a sweater, a geometric shape, or a picture that spans most of the garment.
The main difference between intarsia and stranding is practical: if you're working a design that covers half your sweater in one color and half in another, stranding would mean carrying yarn across the entire width on every row. That creates bulk, uses more yarn, and makes the fabric stiff. Intarsia avoids this by keeping each color in its own section. The trade-off is that intarsia requires more setup and attention to how you manage your yarns.
Key Takeaways
- Intarsia uses separate yarn sources for each color block instead of carrying yarn across the row, which keeps the back of the fabric flat and smooth.
- You need a chart that shows exactly where each color goes, row by row, and you must read it in the direction you're knitting (right to left on knit rows, left to right on purl rows).
- Bobbins, cardboard cards, or even wound lengths of yarn hold each color; the key is preventing tangles where colors meet by twisting them together on every row.
- The twist at color changes is essential — skip it and you'll see a hole in your finished fabric.
- Intarsia works best for large, solid color areas; small repeating patterns are faster and easier with stranding.
Reading and Preparing Your Intarsia Chart
An intarsia pattern comes as a chart where each square represents one stitch and each color is shown as a different symbol or shade. Before you cast on, count the stitches and rows in the chart and make sure they match your pattern instructions. The chart tells you not just what colors to use but exactly where each color starts and stops.
The critical step is learning to read the chart in the direction you're knitting. On a knit row (working right to left), you read the chart from right to left. On a purl row (working left to right), you read it from left to right. Many knitters print their chart and highlight or mark the row they're working on with a ruler or sticky note to avoid losing their place. If your chart is small, enlarging it on a photocopier or printing it larger makes it much easier to follow without mistakes.
Before you start, identify every color in the chart and gather your yarn. Write down the approximate yardage you'll need for each color block — you don't need exact amounts, but a rough estimate prevents running out mid-row. For large blocks, you may need more yarn than a single bobbin holds, so plan to tie on a new length when the first runs out.
Setting Up Bobbins and Managing Multiple Yarns
A bobbin is a small tool that holds a length of yarn and prevents it from tangling with other colors. Bobbins come in plastic or cardboard and cost very little. Wind each color onto its own bobbin — don't wind too tightly, or the yarn will be hard to pull; wind until the bobbin is full enough to hold the yarn you need for that section without unraveling. For a small color block, you may only need a few yards on a bobbin. For a large block, you might wind a full bobbin or even use two.
If you don't have bobbins, you can use cardboard cards (cut a rectangle, wind yarn around it, and find the end with a clothespin) or straightforward wind the yarn into a loose ball and let it hang. The goal is to keep each color separate and prevent it from tangling with the others. Arrange your bobbins or yarn lengths so you can reach each one without crossing over another — this matters more as you add more colors.
Some knitters work intarsia flat on a table or in their lap rather than holding the needles in the air, because it's easier to manage multiple yarn sources when you can see them all. This is not required, but it can reduce frustration, especially when you're learning.
The Twist: How Colors Join Without Holes
The moment where one color ends and another begins is called a color change, and the way you handle it determines whether your fabric has holes. On every row where colors meet, you must twist the two yarns around each other before you knit the next stitch. This twist locks the two colors together and closes the gap.
Here's how it works: when you reach the point where you switch from Color A to Color B, drop Color A and pick up Color B from underneath it (or from the side — the direction depends on whether you're on a knit or purl row, but the principle is the same). The yarn you're picking up should wrap around the yarn you just dropped. Then knit the next stitch with the new color. On the next row, when you switch back, you do the same thing in reverse. This twist happens on every single row where colors meet, without exception.
If you forget to twist, you'll see a small hole or gap in your fabric where the colors meet. These holes are hard to fix after the fact, so it's worth taking a moment on each color change to make sure you've twisted. Some knitters count their color changes as they go ("twist, knit, twist, knit") to build the habit.
Working the Intarsia Rows: Knit and Purl
Once you've set up your bobbins and understand the twist, the actual knitting is straightforward: follow your chart row by row, knitting each stitch in the color shown. On knit rows, you read the chart from right to left and knit normally. On purl rows, you read the chart from left to right and purl normally. The only difference from regular knitting is that you're switching yarns and twisting them at color changes.
Keep your tension even, especially at color changes. If you pull too tight when you switch colors, the fabric will pucker. If you pull too loose, the twist will be visible or the stitches will be uneven. Aim for the same tension you use for the rest of your knitting. Some knitters find it helpful to knit the first stitch after a color change a little loosely to avoid puckering.
As you work, the bobbins or yarn lengths will hang from the back of your work. Don't let them get tangled — if they do, stop and untangle them before continuing. A few seconds of prevention saves time later. If a bobbin runs out of yarn mid-row, tie on a new length of the same color and keep going. You can weave in the ends later.
Finishing Intarsia: Weaving in Ends and Blocking
Intarsia creates many yarn ends because you're starting and stopping colors throughout the piece. Before you weave them in, block your finished garment (or the intarsia section) to even out the fabric and set the stitches. Blocking also helps hide small imperfections in tension or color changes.
To weave in ends, thread each yarn tail onto a tapestry needle and run it through the back of stitches in the same color for about an inch, then reverse direction and run it back through a few stitches. This anchors the end and makes it nearly impossible to pull out. Because intarsia has a flat back with no strands, you have plenty of room to hide ends. Trim the tails close to the fabric once they're woven in.
If you notice small holes at color changes after blocking, you can close them with a tapestry needle and matching yarn by working a few stitches in the gap. This is a last resort and usually not necessary if you twisted consistently, but it's good to know the option exists.
When to Use Intarsia Versus Other Colorwork Methods
Intarsia is best for large, solid blocks of color — a sweater with a big picture on the front, a blanket with geometric shapes, or a garment where colors don't repeat across the row. If your design has small repeating patterns (like a snowflake or geometric motif that appears every 10 stitches), stranding is faster and simpler. If you have three or more colors in the same row and they're scattered across the width, intarsia becomes complicated; in that case, consider whether the design could be simplified or worked in sections.
Intarsia also requires a chart, which not all patterns provide. If you're working from a written pattern with no chart, you'll need to create one yourself or choose a different technique. For beginners, starting with a straightforward two-color intarsia design (like a sweater with a solid-color block on the front) is much easier than jumping into a complex multi-color picture.
Common Mistakes and How to Avoid Them
The most common mistake is forgetting to twist colors on every row where they meet. The second is reading the chart in the wrong direction, which flips your design. The third is pulling too tightly at color changes, which creates puckering. All three are straightforward to prevent with a little attention.
Another frequent problem is tangled bobbins. If you're working with more than two colors, arrange them so the ones you use most often are easiest to reach. If bobbins keep tangling, stop and untangle them — it takes 30 seconds and saves you from having to rip back rows later. Some knitters use a yarn organizer (a small box or bag with slots for each bobbin) to keep everything in place.
Finally, don't try to carry a color across more than a few stitches in intarsia. If you need a color again in a few rows but not in the next row, you can carry it loosely up the side, but this is not true intarsia and can create loose edges. If you're tempted to do this often, your design might be better suited to stranding.
Frequently Asked Questions
Do I have to use bobbins for intarsia?
No. Bobbins are convenient, but you can use cardboard cards, clothespins, or even just wind the yarn into a loose ball and let it hang. The point is to keep each color separate and prevent tangling. Use whatever system works for you and your workspace.
What happens if I run out of yarn on a bobbin mid-row?
Tie on a new length of the same color and keep knitting. You'll have a knot on the back of your work, which you can hide when you weave in ends. This is normal and not a problem.
Can I use intarsia for a sweater with a pattern all over?
Intarsia works best for large, solid color blocks. If you want a pattern that repeats across the entire row (like a geometric or Fair Isle design), stranding is much faster and easier. Intarsia would require dozens of bobbins and constant color changes, which is impractical.
How do I fix a hole at a color change?
If you see a small hole after blocking, thread a tapestry needle with matching yarn and work a few stitches in the gap to close it. If the hole is large, you may need to rip back to that row and redo it with a proper twist. Prevention (twisting on every color change) is much easier than fixing.
What's the difference between intarsia and Fair Isle?
Fair Isle carries unused colors across the back of the work on every row, creating a stranded fabric. Intarsia uses separate yarn sources for each color block and twists them together at color changes, leaving a flat back. Fair Isle is better for small repeating patterns; intarsia is better for large solid blocks.