Sunburst Granny Square Cushion Cover Crochet Pattern | Floral Crochet Pillow
There is something deeply satisfying about a project that comes together in rounds. The rhythmic pull of yarn, the way petals emerge from a centre magic ring, and the slow build of colour that transforms simple stitches into something that looks like it belongs on a designer’s mood board — that is exactly what the Sunburst Granny Square cushion cover delivers. Whether you are a seasoned crocheter looking for a weekend project or someone who has mastered the basic granny square and wants to take their next step, this floral crochet pillow pattern is one you will return to again and again.
In this guide, you will find everything you need to make a finished cushion cover that is as beautiful on a living room sofa as it is tucked into a reading nook. We will cover the materials, the stitch breakdown, the colour choices that make this pattern pop, and the assembly steps that pull the whole thing together into a professional-looking finish. By the end, you will have not just a pattern but a proper understanding of why each round works the way it does.
Why the Sunburst Granny Square Works So Well for a Cushion Cover
The traditional granny square has been a crochet staple for generations, but the Sunburst variation lifts it into something more sculptural. Instead of the familiar cluster-and-chain construction you might know from vintage afghans, the Sunburst granny square builds outward from a tightly worked centre using longer stitches — typically double crochets and treble crochets — arranged so that they fan out like the rays of a sun or the petals of a bloom. The result is a motif with genuine visual depth, a piece that catches light differently depending on the angle.
For a cushion cover specifically, the sunburst motif works because of proportion. A standard 45 cm or 18-inch cushion insert gives you enough surface area for the pattern to breathe. The floral centre becomes a focal point, the radiating rounds form a frame, and any border work you add gives the cover its finished edges. Because the motif is essentially a large single square, there is none of the seaming work you would face with a multi-motif Afghan — you make two squares, join them, and you are done. That directness makes it a genuinely satisfying project rather than a process that drags.
It is also an excellent stash-buster. The Sunburst Granny Square cushion cover uses relatively small amounts of several colours, so if you have been building up a yarn collection and want to put it to use, this is a project that welcomes that.
Materials You Will Need
Before you begin, it helps to gather everything together. Working with all your materials in front of you means you spend your time crocheting rather than searching for a hook or running out of yarn mid-round.
Yarn: Worsted weight yarn works beautifully for this pattern. You will need approximately 150 grams of your main colour (the background colour that forms the outer rounds of the square), 50 grams each of two or three contrasting colours for the flower centre and petal rounds, and a small amount of a fourth accent colour if you want to add a border detail. Cotton yarn gives a crisp, structured finish that holds the square’s shape well and is easy to wash, which matters for a cushion cover that will actually be used. Acrylic blends are a perfectly good alternative if you prefer a softer hand or need washability on a budget.
Hook: A 5 mm crochet hook is the sweet spot for most worsted weight yarns. If your tension runs tight, go up to a 5.5 mm. The square should feel firm enough to hold its shape but not so stiff that it is difficult to work.
Cushion insert: A 45 cm (18-inch) square cushion pad. You can adjust the pattern sizing, but this is the dimension these instructions are written for.
Notions: A yarn needle for weaving in ends, scissors, stitch markers if you find them helpful, and either a zip or buttons if you want a proper closure on the back of the cover. Many crocheters simply use an envelope-style back, which requires no hardware at all.
Colour Palette Ideas
One of the great pleasures of this pattern is choosing your colours, and it is worth taking a moment to think about this before you cast on. The Sunburst Granny Square is essentially a floral motif, so the colour logic of flowers translates well. A warm golden yellow centre surrounded by a deep burnt orange petal round, transitioning into an ivory or cream background, gives you a sunflower-inspired cushion that works in almost any room. Swap the yellow for a dusty rose and the orange for a muted terracotta, and you have a vintage-feeling cushion that suits neutral interiors beautifully.
For something more graphic and contemporary, try a strongly contrasting palette: deep navy or forest green as your main background, with a single bright accent colour — a poppy red or a sharp coral — for the flower. This kind of high-contrast execution makes the motif look almost geometric and gives the finished cushion a modern feel.
If you prefer to work with a single colourway, a tonal approach using three or four shades of the same colour family — pale lavender through to deep violet, for example — creates a sophisticated ombre effect that is subtle from across the room but rewarding when you look closely.
Whatever palette you choose, lay your yarn skeins next to each other before you begin. What looks good on screen or in the shop may read differently when you hold them together, and it is much easier to swap a colour out before you have worked any rounds.
Understanding the Stitch Vocabulary
If you are comfortable with standard crochet stitches, this pattern will feel approachable. Here is a quick reference for the stitches used throughout.
A magic ring (also called a magic circle) is the best starting point for any worked-in-the-round project. It allows you to close the centre completely so there is no visible hole in the middle of your flower. If you have not used one before, it is worth practising a few times on scrap yarn before you begin your square — once you feel comfortable with it, you will use it on almost every future circular project.
Chain stitches form the structure between clusters and create the open, lacy quality of the outer rounds.
Double crochet (UK terminology) or single crochet (US terminology) is used for the tightest, most structural rounds. In this pattern, where US terminology is used, single crochet forms the dividing rounds between colour sections.
Half double crochet builds a slightly taller stitch and is used in the transitional rounds.
Double crochet (US) is the workhorse stitch of the pattern. The petal rounds are built almost entirely from double crochets worked in groups, and the outer background rounds use double crochet clusters to build the square’s corners and edges.
Treble crochet appears in the outermost petal round and gives the blooms their elongated, realistic look. Working a treble crochet into the base of an earlier round — reaching down past an intervening round of single crochets — is the technique that gives the Sunburst its distinctive radiating quality.
The Pattern: Step by Step
Centre Flower (Colour A: your petal colour)
Round 1: Start with a magic ring. Chain 3 (this counts as your first double crochet), work 11 more double crochets into the ring. Pull the ring closed, then slip stitch to the top of your starting chain 3 to join. You now have 12 double crochets arranged in a tight circle. Fasten off and weave in ends.
Round 2: Join Colour B (your accent colour) to any stitch. Chain 1, single crochet in the same stitch. Chain 3, skip 1 stitch, single crochet in the next stitch. Repeat from to around. You will have 6 chain-3 loops. Slip stitch to join and do not fasten off.
Round 3: Slip stitch into the first chain-3 space. In each chain-3 space, work: 1 single crochet, 1 half double crochet, 3 double crochets, 1 half double crochet, 1 single crochet. This forms 6 small petals. Slip stitch to join. Fasten off.
Round 4: Join Colour A again, inserting your hook around the back of the work to find the single crochet stitches from Round 2 (between the petals). Chain 1, single crochet around the back post of each of the 6 single crochet stitches from Round 2, working chain 4 between each single crochet. You will have 6 chain-4 loops sitting behind the petals from Round 3. Slip stitch to join. Do not fasten off.
Round 5: Slip stitch into the first chain-4 space. In each chain-4 space, work: 1 single crochet, 1 half double crochet, 1 double crochet, 1 treble crochet, 1 double crochet, 1 treble crochet, 1 double crochet, 1 half double crochet, 1 single crochet. This creates 6 longer petals that spread outward behind the smaller inner petals, giving the sunburst its layered look. Slip stitch to join. Fasten off.
Transition to Square (Colour C: your main background colour)
Round 6: Join Colour C in any visible space between petals. Chain 3, double crochet in the same space. Chain 2, work 2 double crochets in the next space between petals. Repeat from * around, ending with chain 2. Slip stitch to join. You are beginning to establish a circular base that will eventually become your square.
Round 7: Chain 3, double crochet in the same stitch, double crochet across to the chain-2 space. In the chain-2 space, work 2 double crochets, chain 2, 2 double crochets (corner made). Continue in this way around all six sections, remembering that you are still working a hexagonal shape at this point, and you will begin squaring it in the next round.
Round 8 onward (squaring the motif): Over the next two rounds, you will consolidate the circular/hexagonal shape into a true square by working increase corners at four points only, placing those corners at every other existing reference point. At each chosen corner, work: 3 double crochets, chain 2, 3 double crochets. At each of the remaining two opposite points, work your stitches flat without a chain-2 increase. This is the structural round that converts your circular flower into a square motif.
Continue adding rounds in Colour C, working 3 double crochets, chain 2, 3 double crochets into each corner chain-2 space and filling the edges with double crochets, until your square measures approximately 44 cm from corner to corner. The exact number of rounds will depend on your tension, but most crocheters will need between 8 and 12 background rounds to reach this size. Measure regularly as you go.
Final border round: Join an accent colour (or continue in Colour C) and work a neat single crochet border all the way around the square, working 3 single crochets into each corner chain-2 space to keep the corners sharp. This finishing round tidies any irregularities and gives the edge a clean look. Fasten off and weave in all ends.
Make two squares in total — one for the front of the cushion cover and one for the back. The back square can be worked entirely in your main colour without the floral centre if you prefer a simpler reverse, or you can make a matching front and back for a fully reversible cover.
Assembling the Cushion Cover
Place your two finished squares wrong sides together, with all ends woven in. Using your yarn needle and a length of main colour yarn, work a slip stitch or single crochet join along three sides of the square. This is the moment where a neat, even join pays dividends — work at a consistent tension and check that your corners line up properly before you commit.
On the fourth side, you have options. The simplest approach is to insert your cushion pad and then work the same slip stitch join along the final side, closing the cover completely. This is great for cushions that will be used decoratively and rarely washed, but less practical if you want to remove the insert for laundering.
For a removable cover, work the fourth side as an envelope closure. Instead of joining all the way along the final edge, leave a central opening roughly 25 cm wide. You can reinforce the edges of this opening with a few extra single crochets and add simple button loops if you want the cover to fasten securely.
Alternatively, if you are comfortable with sewing, a zip sewn along the inside of the fourth edge gives a very clean finish. Whichever method you choose, block both squares before assembly — this is the step that makes an enormous difference to the finished look. Wet blocking or steam blocking will even out any inconsistencies in tension, sharpen the corners, and give the whole cover that professionally made quality.
Blocking and Finishing Tips
Blocking is non-negotiable for a project with this much structure. Soak your completed squares in lukewarm water for about twenty minutes, then gently press out excess water in a towel without wringing. Pin each square to a blocking mat or foam tiles, checking that all four corners are square and that the dimensions match between the front and back squares. Leave to dry completely, which can take twelve hours or more depending on the yarn fibre and your environment.
If you are using an acrylic yarn that does not respond to wet blocking, steam blocking is your friend. Hold a steam iron a couple of centimetres above the surface and work across it slowly, then pin and leave to set.
Customising Your Sunburst Granny Square Cushion
Once you have made this pattern once, it becomes a template you can adapt endlessly. Scale it up by using chunky yarn and a larger hook for a bold, maximalist pillow that makes a statement. Work the same motif in miniature with fingering weight yarn and a 2.5 mm hook for a delicate, heirloom-quality piece. Add a ruffle border by working additional rounds of increasing chain and double crochet stitches along the outer edge of the front square. Introduce beading by threading beads onto your yarn before you begin and pushing one bead into position on each treble crochet in the outer petal round.
This pattern also lends itself beautifully to a coordinated set. Make several covers in the same stitch construction but with different colour palettes, and arrange them together on a sofa or bed for a cohesive but varied look. The structural similarity ties them together; the colour differences keep things interesting.
A Note on Yarn Substitutions
This pattern is forgiving when it comes to yarn choices, but a few principles will help. Natural fibres like cotton and linen give the sharpest stitch definition, which really showcases the petal detail in the inner rounds. Wool and wool blends are beautifully elastic, making them easier to work with but occasionally less crisp in the finished item. Acrylic is durable and affordable and perfectly fine for a workhorse cushion cover that will be sat on, leaned against, and washed frequently.
Whatever yarn you choose, always crochet a tension swatch before starting the full square. A quick 10-by-10 cm swatch in your main stitch will tell you immediately whether your hook and yarn combination will yield a square of the right size. Adjusting hook size at the swatch stage is a five-minute job; adjusting it after you have completed a full square is not.
The Sunburst Granny Square Cushion Cover is one of those projects that earns its place in your permanent pattern library. It is technically accessible enough that a confident beginner can complete it, but it has enough visual complexity and design interest to satisfy experienced crocheters who want something genuinely beautiful to show for their hours of work. The floral centre gives it warmth and personality, the structured square format makes it practical, and the endless colour possibilities mean you will never make exactly the same cushion twice.
Pick up your hook, choose a palette that makes you happy, and enjoy every round.
