Diamonds & Bobbles Cushion Cover Knitting Pattern: A Complete Step-by-Step Guide
There is something deeply satisfying about a cushion cover that combines two classic knitting techniques into one cohesive design. The Diamonds & Bobbles Cushion Cover is exactly that kind of project — a timeless piece that works geometric diamond panels alongside playful bobble accents, creating a textured fabric that looks far more complex than it actually is to knit. Whether you are a confident beginner looking to push your skills forward or an experienced knitter in search of a satisfying weekend project, this pattern has everything you need to produce a beautiful, heirloom-quality cushion cover you will be proud to display in your home.
In this guide, you will find everything from the materials you need and tension information to the full written pattern, finishing instructions, and tips for customising the design to suit your own style. Let’s get started.
Why You’ll Love This Pattern
Textured knitting has enjoyed a resurgence in popularity over recent years, and it is easy to understand why. A cushion knitted in stocking stitch might be quick to make, but a cushion worked in a rich combination of cables, bobbles, and diamonds becomes a statement piece — something that draws the eye and invites the hand to touch it. The Diamonds & Bobbles pattern achieves this effect without requiring you to manage an intimidating number of cable crossings at once. The diamond outline is created through the elegant interplay of knit and purl stitches, while the bobbles are made in place and require nothing more than a little confidence and patience.
This pattern also makes an excellent gift. A finished cushion cover in a neutral, luxurious yarn looks expensive and thoughtful, and because it uses a relatively modest amount of yarn, it is a gift that is kind on the budget too.
Materials You Will Need
Before you cast on, gather everything together so the knitting itself can flow uninterrupted.
Yarn: Approximately 200–250 grams of Aran weight yarn. A smooth, lightly twisted yarn will show the textured stitches to their best advantage. Pure wool, wool-acrylic blends, or a soft cotton-blend all work beautifully. Avoid very fluffy or highly textured yarns, as these will obscure the stitch definition that makes this pattern so striking. The sample shown here was knitted in a 100% wool Aran yarn in a warm oatmeal shade, which gives the bobbles and diamonds a beautiful shadow definition.
Needles: 5mm (UK size 6 / US size 8) straight or circular needles. If you find you knit tightly, go up half a size; if you knit loosely, come down half a size to match the tension.
Notions: A tapestry needle for seaming and weaving in ends, stitch markers to separate pattern panels, a cable needle (optional — not strictly necessary for this pattern but useful if you are new to working bobbles), and scissors.
Cushion Pad: A 45cm x 45cm (18 inch x 18 inch) cushion pad. Always buy a pad one size larger than the finished cover if you want a nicely plump result — a 50cm pad inside a 45cm cover will look generously filled rather than flat and sad.
Buttons (optional): Three or four medium buttons approximately 2cm in diameter if you choose the button-band back closure rather than a simple envelope back.
Tension
Tension is especially important in a textured pattern like this, because bobbles and diamond panels pull the fabric in slightly compared to plain stocking stitch. Getting your tension right before you begin will ensure your finished cushion cover matches the intended measurements.
Tension swatch: 18 stitches and 24 rows to 10cm (4 inches) measured over the diamond panel pattern on 5mm needles, after blocking.
To check your tension, cast on 26 stitches and work 30 rows in the diamond pattern described below. Cast off, wet block your swatch by soaking it in cool water and laying it flat to dry, then measure carefully. Adjust your needle size if necessary. This step feels like it delays the fun, but it genuinely saves frustration later.
Finished Measurements
The finished cushion cover measures approximately 44cm wide by 44cm tall (17.5 inches x 17.5 inches) before blocking, and 45cm x 45cm (18 inches x 18 inches) after blocking. It is worked in two identical panels — a front and a back — which are then seamed together on three sides, with the fourth side left open for the cushion pad insertion.
Abbreviations
The following abbreviations are used throughout this pattern.
k — knit
p — purl
RS — right side
WS — wrong side
MB — make bobble (instructions below)
rep — repeat
sl — slip
k2tog — knit two stitches together
ssk — slip, slip, knit (a left-leaning decrease)
yo — yarn over
pm — place marker
sm — slip marker
CO — cast on
BO — bind off (cast off)
Special Stitch: Make Bobble (MB)
The bobble is the star of this pattern, and once you have made one, the technique becomes second nature. Here is how to work a bobble in this pattern:
Into the next stitch, work (k1, p1, k1, p1, k1) — that is five stitches made from one stitch. Turn your work so the wrong side faces you and purl across those five stitches. Turn again so the right side faces you and knit those five stitches. Turn once more and p5. Turn a final time, then with the right side facing, k2tog, k1, ssk — you are back to three stitches. Finally, sl1, k2tog, pass slipped stitch over — you are back to one stitch. The bobble is complete and sits on the right side of the fabric as a satisfying little knot.
If you are working this for the first time, practise making a bobble on a small swatch before you begin the main pattern. The turning back and forth can feel fiddly at first, but it becomes quick and rhythmic once your hands know what they are doing.
The Diamond Panel
The diamonds in this pattern are formed entirely from knit and purl stitches arranged so that raised knit lines travel diagonally across a purl background, meeting at points to form the diamond outline. A bobble sits at the centre of each diamond, anchoring the design and adding wonderful three-dimensional interest.
The diamond panel is worked over a multiple of 12 stitches, with 2 edge stitches on each side. For the cushion cover front, you will work three full diamond repeats across the width of the panel.
Pattern Instructions
Cushion Front
Cast on 80 stitches using the long-tail cast on method, which produces a neat and slightly elastic edge well suited to this pattern.
Foundation row (WS): P2, p12, rep from to last 2 sts, p2.
Now begin the diamond and bobble pattern as follows. The pattern repeat is 12 stitches wide and 24 rows tall. Work three complete repeats across the row.
Row 1 (RS): K2, p5, k1, p5, k1; rep from to last 2 sts, k2.
Row 2 (WS): P2, k4, p1, k1, p1, k4, p1; rep from to last 2 sts, p2.
Row 3 (RS): K2, p3, k1, p1, k1, p1, k1, p3, k1; rep from to last 2 sts, k2.
Row 4 (WS): P2, k2, p1, (k1, p1) three times, k2, p1; rep from to last 2 sts, p2.
Row 5 (RS): K2, p1, k1, (p1, k1) four times, p1, k1; rep from to last 2 sts, k2.
Row 6 (WS): P2, p1, k1, p1, k3, p1, k3, p1, k1; rep from to last 2 sts, p2.
Row 7 (RS): K2, k1, p1, k1, p5, k1, p1, k1, p1; rep from to last 2 sts, k2.
Row 8 (WS): P2, p1, k1, p1, k5, p1, k1, p2; rep from to last 2 sts, p2.
Row 9 (RS) — Bobble Row: K2, p1, k1, p1, k2, MB, k2, p1, k1, p1; rep from to last 2 sts, k2.
Row 10 (WS): As Row 8.
Row 11 (RS): As Row 7.
Row 12 (WS): As Row 6.
Row 13 (RS): As Row 5.
Row 14 (WS): As Row 4.
Row 15 (RS): As Row 3.
Row 16 (WS): As Row 2.
Row 17 (RS): As Row 1.
Row 18 (WS): P2, k5, p1, k5, p1; rep from to last 2 sts, p2.
Row 19 (RS): K2, p4, k1, p1, k1, p4, k1; rep from to last 2 sts, k2.
Row 20 (WS): P2, k3, p1, (k1, p1) twice, k3, p1; rep from to last 2 sts, p2.
Row 21 (RS): K2, p2, k1, (p1, k1) three times, p2, k1; rep from to last 2 sts, k2.
Row 22 (WS): As Row 20.
Row 23 (RS): As Row 19.
Row 24 (WS): As Row 18.
This completes one full 24-row pattern repeat. Work this 24-row repeat a total of four times, then work rows 1–12 once more. This gives you a panel of approximately 44cm in height.
Cast off: Bind off all stitches knitwise on the right side, working the bind-off loosely so the top edge has the same elasticity as the rest of the fabric.
Cushion Back
The back of the cushion is worked identically to the front. This creates a reversible cushion cover with beautiful texture on both sides — a lovely detail that sets handmade pieces apart from mass-produced alternatives.
If you prefer a simpler back, you can work the entire back panel in a 2×2 rib (knit 2, purl 2, repeated to end) which will draw the fabric in slightly and create a natural tension against the patterned front.
Alternatively, work the back in reverse stocking stitch for a smooth contrast against the textured front. All three options use approximately the same amount of yarn.
Finishing
Good finishing transforms a knitted piece from something homemade into something truly handcrafted. Take your time with the following steps.
Blocking: Before seaming, wet block both panels. Soak them in cool water for 15–20 minutes, gently press out excess water in a towel, then pin them out to 45cm x 45cm on a foam blocking mat, using rust-proof pins. Allow to dry completely — ideally overnight. Blocking opens up the texture, evens out any tension inconsistencies, and allows the bobbles to settle into their final three-dimensional form. The difference between a blocked and unblocked piece is remarkable.
Seaming: Place the front and back panels together with right sides facing outward (so the seam sits on the inside). Using your tapestry needle and a length of matching yarn, seam three sides together using mattress stitch, which produces a nearly invisible seam on the right side of the work. Work slowly and pick up corresponding bars or stitches on each panel so the seam lies flat and even.
Inserting the pad and closing the fourth side: Insert your cushion pad through the open edge, distributing it evenly into the corners. For a simple envelope closure, fold a 5cm overlap of the back panel over the front edge before seaming — the natural tension of the knitted fabric will hold the pad in place. For a button closure, work a button band by picking up stitches along the open edges, working a few rows of rib, and adding button holes using the yarn-over method before binding off.
Weaving in ends: Weave in all loose ends securely using your tapestry needle, working each end in two different directions through the wrong-side of the fabric to prevent them from working loose over time.
Tips for Success
A few practical pieces of advice gathered from knitting this pattern will make your experience smoother from start to finish.
Use a row counter religiously. The 24-row repeat is not complicated, but it is easy to lose your place, particularly around row 9 when the bobble interrupts the rhythm. Knowing exactly which row you are on at all times removes the guesswork entirely.
Place stitch markers between each 12-stitch repeat when you are learning the pattern. As the diamond shapes become familiar to your hands and eyes, you will find you no longer need them — the pattern itself will tell you where you are. But in the early rows, markers are genuinely helpful.
Do not pull your yarn too tight after completing a bobble. The natural tendency is to tug the working yarn to close up the bobble neatly, but doing so too aggressively draws the surrounding stitches inward and creates puckering. A gentle, firm tension is what you are after.
If you are making this as a gift and are unsure about the recipient’s colour preferences, oatmeal, cream, soft grey, and warm heather tones are all universally flattering and work beautifully with the texture of the design.
Customisation Ideas
One of the great pleasures of working from a written pattern rather than a kit is the freedom to make it your own. Here are a few ideas for adapting the Diamonds & Bobbles Cushion Cover to suit different styles and spaces.
For a bolder, more graphic look, try working the front panel in a deep charcoal or navy and the back panel in a warm cream or ivory. The contrast between the two panels peeping out from under the cushion adds visual interest without overwhelming a room.
For a larger cushion, simply add additional 12-stitch diamond repeats to the width. Four repeats rather than three, with the same two-stitch edge on each side, will give you a wider panel suited to a 50cm or 55cm cushion pad.
For a cozier, chunkier version, substitute a chunky weight yarn and 6mm needles. The bobbles will be more pronounced and the whole project will knit up considerably faster — a wonderful option for a quick handmade gift.
You could also introduce a subtle stripe effect by switching between two harmonious colours every 24-row repeat, so each diamond panel appears in a different shade. The colour changes are made at the beginning of a row and the yarn not in use is carried loosely up the side of the work.
Care Instructions
Treat your finished cushion cover with the same care you would any quality woollen textile. Hand wash in cool water using a gentle wool wash, support the weight of the wet fabric as you lift it from the water to avoid stretching, and lay it flat to dry away from direct heat or sunlight. Most wool and wool-blend yarns can tolerate a cool machine wash on a wool cycle, but check your yarn’s ball band to be certain. Bobble stitches can flatten with heavy use over time — a gentle reshaping while the cover is damp after washing will restore their original roundness beautifully.
A Final Word
The Diamonds & Bobbles Cushion Cover is the kind of knitting project that reminds you why you picked up needles in the first place. It is engaging enough to hold your attention through long evenings but not so demanding that it becomes a source of stress. The finished object is genuinely beautiful — a piece that earns compliments and lasts for years. Cast on with good yarn, take your time over the bobbles, block it carefully, and you will have a cushion cover that looks and feels truly special. Happy kn
