What Is Marling?
Marling is the technique of holding two strands of yarn together and knitting with them as though they were a single strand. The two yarns intertwine as you knit, creating a fabric where both colours appear in a blended, tweedy mix — not as distinct stripes or blocks, but woven together at the stitch level. The effect is subtle and sophisticated: a heathered, speckled texture that no single commercially produced yarn quite replicates.
The word comes from "marled yarn," which is yarn that's been spun or plied with two colours twisted together. When you hold two yarns together yourself, you're achieving a similar effect with complete control over the colour combination.
How to Do It
The physical technique is exactly what it sounds like: hold both yarns together in your working hand (or over your index finger if you're a Continental knitter) and treat them as a single strand. Knit with both strands through every stitch, exactly as you would with a single yarn.
A few practical points:
- Wind both yarns together into a single cake using a ball winder, or pull from the centre of each ball simultaneously. If you're pulling from two separate balls, put them in a bag together so they don't roll away from each other as you knit.
- Tension is the main challenge. Two strands held together are harder to keep even than a single strand. Work more slowly than usual until the rhythm feels natural.
- Keep the strands parallel. Avoid letting them twist around each other — if they twist, you'll get an uneven, knotted strand that's difficult to knit through. Every few stitches, let your work hang and allow the twist to fall out.
Choosing Colours That Work Together
Marling is both a science and an art. The colours interact at a very small scale — each stitch shows both colours simultaneously — so the pairing matters enormously.
The Colour Wheel Principle
Complementary colours (opposite each other on the colour wheel — red and green, blue and orange, yellow and purple) create a vibrant, energetic mix when marled. The individual colours remain identifiable but shimmer against each other. Use this sparingly unless you want a bold, electric result.
Analogous colours (adjacent on the colour wheel — blue and teal, orange and red, yellow and lime) blend smoothly and harmoniously. The resulting fabric reads almost as a single complex colour. This is the safer, more wearable choice for garments.
A neutral with a colour — grey with dusty pink, cream with sage, navy with burgundy — produces a sophisticated heathered result. The neutral desaturates the stronger colour and creates something that looks like a high-end tweedy yarn.
Consider the Value (Light/Dark Contrast)
High contrast marling (one light, one dark yarn) creates a salt-and-pepper effect where both colours are clearly visible. Low contrast marling (two yarns of similar value) blends more seamlessly. Both are beautiful; the choice depends on how prominent you want the marled texture to be.
Using Two Yarns from Different Colourways
Self-striping or variegated yarns marly beautifully with a coordinating solid. The solid provides a grounding note while the variegated yarn moves through its colours, creating an ever-changing fabric where no two areas look identical. This is an excellent use for variegated yarn that you love but find too busy on its own — marling it with a coordinating solid calms the colours without eliminating the movement.
Needle Size Adjustment
This is the most important technical note. When you hold two strands together, the combined strand is thicker than either individual yarn — significantly so. As a rule of thumb:
- Two fingering weight yarns held together = approximately DK weight. Use DK needles (3.5–4mm).
- Two DK yarns held together = approximately bulky. Use bulky needles (6–7mm).
- Two worsted yarns held together = approximately super bulky. Use 8–10mm needles.
These are starting points, not absolutes. Always swatch. The exact needle size depends on your tension and the specific yarns. Your swatch should feel relaxed and even — not stiff (too small a needle) or sloppy (too large).
The combined strand doesn't add the metres together: you still use the shorter yardage of the two skeins as your limiting factor. If one skein has 200m and the other has 300m, you'll run out of the first at 200m — plan accordingly.
Results vs Colourwork
Marling is often confused with stranded colourwork (Fair Isle, Scandinavian patterns), but the effects are completely different:
- Stranded colourwork creates geometric patterns, distinct colour blocks, and specific motifs. The colours alternate stitch by stitch in a deliberate pattern.
- Marling creates an even, blended texture with no distinct pattern. The colours are always together in the same stitch, not alternating. The result is more subtle and textile-like than graphic.
Marling is also simpler: there are no floats to manage, no chart to follow, no colour dominance to worry about. You're just knitting with two yarns at once. This makes it accessible to any skill level.
Using Up Partial Skeins
Marling is one of the best uses for partial skeins — the small remainders from other projects that aren't quite enough for anything on their own. If you have 100m of one fingering yarn and 120m of another, hold them together and knit a small project: a pair of mitts, a hat, a cowl, a baby item.
You'll run out of one yarn first. When that happens, you have two choices:
- Introduce a third yarn of similar weight to replace the finished one. The fabric will shift subtly in appearance — which can be part of the charm.
- Separate out to a single strand of the remaining yarn for the final section — creating a deliberate transition from marled to single-coloured fabric.
There's no wrong answer. Marling, by its nature, is a technique that rewards improvisation and a light touch with planning. The results are almost always more beautiful than you expect.