Granny Square Sunflower Blanket – Free Crochet Pattern
There is something deeply satisfying about a crochet project that manages to be both timeless and cheerful at the same time. The granny square sunflower blanket does exactly that. It takes one of the most beloved crochet traditions — the classic granny square — and fills it with the warm, golden energy of a sunflower field in full bloom. Whether you are a seasoned crocheter looking for your next statement piece or a confident beginner ready to move beyond single projects into something truly impressive, this pattern is designed to guide you every step of the way.
This free pattern will walk you through creating individual sunflower granny squares and joining them into a finished blanket that works just as beautifully draped over a sofa as it does spread across a bed or gifted to someone you love. Let’s dig in.
Why Sunflower Granny Squares?
Granny squares have been around for generations, passed down through families and communities as one of the most versatile building blocks in all of crochet. What makes them so enduring is their modularity — you work each square separately, which means you can take your project anywhere, work in short bursts, and build toward something large without ever feeling overwhelmed.
The sunflower granny square takes that beloved foundation and gives it personality. The yellow petals radiating from a rich brown or dark chocolate center instantly evoke summer, warmth, and happiness. When you join dozens of them together, the repetition creates a stunning visual rhythm that photographs beautifully and looks incredibly impressive in person — even though each individual square is completely approachable once you understand the structure.
This blanket also makes for a wonderful stash-buster project. If you have been collecting yellow and golden tones in your yarn stash, now is your moment.
Materials You Will Need
Before you begin, gather the following supplies. Having everything ready before you start will make the process much smoother.
Yarn: You will need a medium weight yarn, also known as worsted weight or size 4. For a throw-sized blanket (approximately 50 by 60 inches), plan on roughly 800 to 1,000 yards of golden yellow, 400 to 500 yards of dark brown or chocolate brown for the centers, and 600 to 800 yards of your chosen background color, which can be cream, white, sage green, or any neutral that complements the yellow. Specific yardage will vary depending on your tension and final blanket dimensions.
Hook: A 5mm (US H/8) crochet hook is ideal for most worsted weight yarns. If your tension runs tight, consider going up to 5.5mm. Your gauge should be approximately 14 stitches and 8 rows to 4 inches in double crochet.
Additional supplies: Scissors, a yarn needle for weaving in ends, stitch markers (optional but helpful), and blocking mats and pins if you would like to block your finished squares for a more professional result.
Understanding the Pattern: Granny Square Structure
Each sunflower granny square in this blanket is worked in the round from the center outward. The square consists of three main sections: the center (which represents the seed head of the sunflower), the petal round, and the background corners that turn the flower into a square format.
If you are new to granny squares or working in the round, here is a quick orientation. You will begin with a magic ring or a chain ring at the center of your work, and each subsequent round is worked into the stitches of the previous round without turning your work. The corner spaces are what create the characteristic square shape — clusters of stitches separated by chain spaces at four equidistant points around the piece.
Throughout this pattern, the following abbreviations are used: ch (chain), sl st (slip stitch), sc (single crochet), dc (double crochet), hdc (half double crochet), tr (treble crochet), sp (space), rep (repeat), and beg (beginning).
The Sunflower Granny Square Pattern
Finished size of each square: Approximately 6 inches by 6 inches with a 5mm hook and worsted weight yarn.
Color A = Dark brown (center)
Color B = Golden yellow (petals)
Color C = Background color of your choice
Round 1 (Center): With Color A, make a magic ring. Ch 3 (counts as first dc), work 11 dc into the ring. Join with sl st to the top of the beg ch-3. You now have 12 dc. Pull the magic ring closed.
Fasten off Color A, leaving a short tail to weave in.
Round 2 (Petal Base): Join Color B in any stitch. Ch 1. Work 2 sc in each dc around. Join with sl st to the first sc. You now have 24 sc.
Do not fasten off.
Round 3 (Petals): This round creates the raised petal effect using treble crochet stitches worked into the skipped stitches of the previous round. Think of this as a popcorn-style petal layer.
Ch 1. Skip the next sc, work (1 dc, 2 tr, 1 dc) into the front loop of the same skipped stitch from Round 1 below, skip the next sc on Round 2, sl st into the next sc. Repeat from to around, working 8 petals total. Join with sl st.
Alternatively, for a simpler version of the petals, you can work the following in Round 3: Ch 4, skip 2 sts, sl st into next st repeated around for 8 loops, then in Round 4 work (1 hdc, 3 dc, 1 hdc) into each ch-4 loop to create rounded petal shapes.
Both methods yield a beautiful sunflower center. Choose whichever feels most comfortable for your skill level.
Fasten off Color B.
Round 4 (Transitional Round): Join Color C in any stitch between petals. Ch 3 (counts as first dc). Work 2 dc in same sp. Ch 2, 3 dc in next sp between petals around, working ch-3 at four evenly spaced corner points to begin forming your square. You should have four corners and two sets of 3-dc clusters on each side. Join with sl st to top of beg ch-3.
Do not fasten off.
Round 5 (Square Border): Sl st to the ch-2 sp. Ch 3 (counts as first dc). (2 dc, ch 2, 3 dc) in same sp (corner made). 3 dc in next sp, (3 dc, ch 2, 3 dc) in corner sp around. Join with sl st to top of beg ch-3.
Fasten off and weave in all ends.
Round 6 (Optional Additional Border): If you want a slightly larger square with a more defined border, join Color C again and repeat Round 5, adding an extra set of 3-dc clusters along each side and working the same corner clusters. This brings your square to approximately 7 inches.
Customizing Your Sunflower Squares
One of the great joys of the granny square format is how easy it is to make adjustments without losing the overall design. Here are a few ways you can put your own stamp on this blanket.
Play with your background color. A deep forest green background gives the blanket a very naturalistic, garden-like feel. Cream or off-white makes the yellow pop dramatically. A soft dusty blue or lavender creates a dreamy, vintage aesthetic that pairs beautifully with golden sunflowers.
Vary the yellow tones. Instead of using a single shade of yellow for all your petals, try mixing two or three shades — a bright canary yellow, a warm golden yellow, and a soft butter yellow — and distributing them randomly across your squares. The result looks like a real sunflower field where each bloom is slightly different from its neighbors.
Add an extra petal round. If you want larger, more voluminous petals, work a second petal round in a slightly lighter or deeper shade of yellow before moving into your background color. This creates a sense of dimension and makes each flower look even more lush.
Use a contrasting border color. For a crisp, modern look, join your squares with a single row of sc in a contrasting color before working your final blanket border. This defines each square clearly and adds graphic impact.
How Many Squares Do You Need?
The number of squares you will need depends on the finished size you are aiming for. Here is a quick guide based on 6-inch squares.
For a baby blanket approximately 30 by 36 inches, you will need about 30 squares arranged in a 5 by 6 grid. For a lap blanket or sofa throw approximately 42 by 48 inches, plan on about 56 squares in a 7 by 8 grid. For a full throw approximately 54 by 60 inches, you will need about 90 squares in a 9 by 10 grid. For a twin bed blanket approximately 60 by 72 inches, aim for about 120 squares in a 10 by 12 grid.
Keep in mind that your final dimensions may shift slightly depending on your yarn weight, hook size, tension, and whether you block your squares. Blocking can add anywhere from half an inch to a full inch to each square, which makes a meaningful difference when you multiply it across a large grid.
Joining Your Squares
There are several methods for joining granny squares, and the one you choose will affect the finished look of your blanket. Here are three popular options.
The slip stitch join is the most classic method. Hold two squares together with right sides facing, and slip stitch through both layers along one edge. This creates a slightly raised seam on the wrong side of the blanket and a clean line on the front. It is quick and consistent, which is why so many crocheters prefer it.
The single crochet join is done with wrong sides together, creating a visible ridge on the right side of the blanket. Many crocheters deliberately use a contrasting color for this join to create a graphic grid effect — the “right side out” seam becomes a design element in its own right. It adds a little extra texture and a lot of visual interest.
The flat slip stitch join (also called the invisible join) is worked flat rather than with pieces held together. You lay the squares on a flat surface and use your hook to work through corresponding stitches along adjacent edges without folding them. This produces the flattest, most seamless result, though it requires more attention and practice.
For this sunflower blanket, the single crochet join in your background color works especially well because it echoes the squares’ own border color and gives the finished piece a cohesive, unified look.
Adding a Final Border
Once all your squares are joined, a border pulls the whole blanket together and gives it a polished, finished appearance.
Simple single crochet border: Work one round of sc evenly around the entire blanket in your background color, working 3 sc into each corner stitch. This is clean and minimal.
Scallop border: After a round of sc, work a scallop border by skip 2 sts, 5 dc in next st, skip 2 sts, sl st in next st around for a pretty, scalloped edge that echoes the curves of the sunflower petals.
Picot border: After a round of sc, work a picot edge by sc in next st, ch 3, sl st into the sc just made across. This adds a delicate, decorative finish.
Shell border with color pop: Work your first border round in your background color, then add a second round of shells or dc clusters in golden yellow for a border that reinforces the sunflower theme.
Tips for a Beautiful Finished Blanket
Tension is one of the most important factors in any crochet blanket, and it becomes especially critical when you are joining many individual squares. If your tension varies between squares, the finished blanket may look uneven or have visible distortions. It helps to work all your squares in one sitting or across similar sessions and to use the same yarn from the same dye lot throughout.
Weaving in your ends securely is also worth taking your time over. With a blanket made of many squares, you will have a lot of ends to manage. A good habit is to weave each end in as you finish each square rather than saving them all for the end. Future you will be very grateful.
Blocking your finished blanket can make an enormous difference. Even if you do not block individual squares, giving the assembled blanket a gentle wet block — soaking it in cool water, squeezing out the excess, then laying it flat to dry with its edges shaped to the correct dimensions — will relax the stitches, even out any tension variations, and give the whole piece a professional look.
Store your blanket by folding it loosely rather than tightly to preserve the integrity of the yarn over time. Natural fiber yarns like cotton or wool benefit especially from being stored folded rather than compressed.
Frequently Asked Questions
Is this pattern suitable for beginners? This pattern is best suited for confident beginners or intermediate crocheters. You should be comfortable with double crochet, working in the round, and slip stitch joins before starting. The petal construction requires a little attention but is not difficult once you understand the technique.
Can I use a different yarn weight? Yes. You can scale this pattern up with bulky yarn and a larger hook for a chunkier, quicker-to-finish blanket, or scale it down with DK or sport weight yarn for a more delicate result. Just adjust your hook size accordingly and expect your square dimensions to change.
How long does it take to make one square? Most crocheters complete one square in 20 to 40 minutes depending on their speed and experience. For a full throw of 90 squares, that works out to roughly 30 to 60 hours of total project time — very achievable spread over a few weeks of casual crocheting.
Can this blanket be machine washed? That depends entirely on the yarn you use. Many acrylic yarns are fully machine washable, which makes them practical for a blanket that will get heavy use. If you use wool or a wool blend, check the care label and be prepared to hand wash and lay flat to dry.
Final Thoughts
The granny square sunflower blanket is the kind of project that earns its place in your finished-objects history. It is cheerful and versatile, it makes a wonderful gift, and the process of making it — square by square, round by round — has a meditative, satisfying quality that keeps you reaching for your hook every evening.
Whether you make a small lap-sized version or commit to a full bed-sized blanket, the result will be something genuinely beautiful, worked entirely with your own hands using a free pattern that costs you nothing but time and yarn. That is one of the best things about crochet: the finished piece can look like it belongs in a boutique, but the only price tag attached to it is the joy you had making it.
If you make this blanket, share a photo in the comments below — there is nothing more inspiring than seeing how different yarn choices and color combinations transform the same basic pattern into something completely unique. Happy crocheting!
