How to Crochet a Sunflower Granny Square – FREE Pattern for Blankets, Afghans & More!

If you’ve been searching for a cheerful, beginner-friendly crochet project that doubles as a show-stopping statement piece, you’ve landed in exactly the right place. The sunflower granny square is one of those timeless designs that never goes out of style. It’s bright, it’s bold, and once you master the basic construction, you can scale it into anything from a cozy lap blanket to a full-sized afghan that takes center stage on your living room sofa.

In this post, I’m walking you through a complete, free sunflower granny square crochet pattern from start to finish. Whether you’re a beginner who has just learned how to chain and single crochet, or an experienced crocheter looking for your next big project, this pattern is designed to be approachable, clear, and genuinely fun to work up. Let’s get into it!

Why You’ll Love This Sunflower Granny Square Pattern

Before we dive into the stitches, let’s talk about what makes this particular granny square so special. Traditional granny squares are built in rounds, usually starting with a small center cluster and expanding outward. The sunflower version takes that same concept and elevates it with a pop of golden yellow petals surrounding a rich brown center, all finished off with a classic green border that ties everything together.

The result looks incredibly intricate, but the construction is surprisingly logical. Each round builds on the one before it, and once you’ve made two or three squares, your hands will move almost on autopilot. That’s the magic of granny squares — repetition turns into rhythm, and rhythm turns into a stack of finished squares faster than you’d expect.

These squares are also endlessly versatile. You can arrange them into a patchwork blanket, sew them together for a table runner, turn a single large square into a pillow cover, or stitch a smaller version onto a tote bag. The possibilities really are wide open.

What You’ll Need

Yarn: Worsted weight yarn (Category 4) works beautifully for this pattern and is widely available in every craft store. You’ll need three colors:

Yellow (Gold) — for the petals. Look for a warm, saturated golden yellow rather than a pale lemon tone. Sunflower Gold, Goldenrod, or Harvest Yellow are all great shades depending on your yarn brand.

Brown (or Dark Chocolate) — for the center. A deep, rich brown gives the square that authentic sunflower look.

Green — for the border. A medium forest green or sage works well, though you can also use a contrasting color if you want a more modern, non-traditional feel.

Hook: A 5.0 mm (H/8) crochet hook is recommended for worsted weight yarn and produces a firm, neat fabric. You can size up to 5.5 mm if you tend to crochet tightly.

Other Supplies:
Yarn needle for weaving in ends
Scissors
Stitch markers (optional but helpful)

Finished Square Size: Approximately 6 inches x 6 inches using worsted weight yarn and a 5.0 mm hook. Blocking can bring this to 6.5–7 inches if desired.

Gauge: Gauge is not critical for a blanket or afghan as long as all your squares are consistent. Aim for roughly 14 dc x 8 rows = 4 inches in a standard double crochet swatch.

Abbreviations Used in This Pattern

ch — chain
sl st — slip stitch
sc — single crochet
dc — double crochet
hdc — half double crochet
sp — space
st — stitch
rep — repeat
BLO — back loop only
FLO — front loop only
RS — right side
MR — magic ring (also called magic loop or adjustable ring)

Understanding the Sunflower Granny Square Construction

This square is worked in six rounds total. Here’s a quick overview before we get into the specifics:

Round 1 creates the brown center using a magic ring and double crochets.

Round 2 adds the back loops of those double crochets to create a raised effect for the center texture.

Round 3 and Round 4 build the yellow petal layer outward.

Round 5 adds the square shape to the design using green yarn.

Round 6 finishes the outer border, defining the classic granny square corners.

Understanding the flow of the pattern makes it much easier to follow along, especially if you’re new to working granny squares in multiple colors.

The Free Sunflower Granny Square Pattern

Round 1 — The Brown Center

With brown yarn, make a magic ring (MR).

Ch 3 (counts as first dc), work 11 dc into the ring. Pull the tail of the magic ring tight to close the center. Join with a sl st to the top of the beginning ch-3. You should have 12 dc total including the chain-3.

Fasten off brown yarn and pull the tail through to the wrong side. You’ll weave this in later.

Tips for Round 1: The magic ring is the neatest way to start a granny square because it leaves no hole in the center. If you prefer, you can chain 4 and join with a slip stitch to form a ring, then work your 12 dc into that ring instead.

Round 2 — Textured Center (Brown, BLO)

Join brown yarn again to any stitch of Round 1. This round is optional but adds lovely texture to the sunflower center, mimicking the bumpy seed head of a real sunflower.

Work 1 sc in the BLO of each dc around. (12 sc total)

Join with a sl st. Fasten off brown and weave in ends.

Why Back Loop Only? Working into the back loop leaves the front loop exposed, which creates a subtle ridged texture that gives your center dimension and visual interest.

Round 3 — Petal Base (Yellow)

This round sets up the foundation for your petals. It creates the structure that the petals will sit on top of.

Join yellow yarn to any st of Round 2.

(Ch 3, skip 1 st, sl st in next st) — rep around until you have worked all 12 stitches.

You should have 6 ch-3 loops evenly spaced around the center.

Join with a sl st. Do not fasten off.

Tip: Count your loops before moving on. Having exactly 6 loops here is essential for the petals to be evenly distributed.

Round 4 — The Petals (Yellow)

This is where the sunflower really comes to life! You’ll work into each of the ch-3 loops from Round 3 to build full, rounded petals.

In each ch-3 loop, work the following:
(1 sc, 1 hdc, 3 dc, 1 hdc, 1 sc) — this creates one petal.

Rep in each of the 6 ch-3 loops around. (6 petals total)

Join with a sl st to the first sc. Fasten off yellow yarn.

Tip: The petals will naturally curve upward and outward from the center as you work. Don’t worry if they look a little crowded at first — once you move to the green border rounds, the square will open up and the petals will have room to spread beautifully.

Want More Petals? If you prefer a fuller flower with 8 petals instead of 6, simply work 16 dc in Round 1 and adjust Round 3 to create 8 ch-3 loops spaced evenly around. The remaining rounds follow the same logic.

Round 5 — Squaring It Out (Green)

Now it’s time to transition from a circular flower shape into the classic square granny format. This round is the bridge between the flower center and the finished square.

Join green yarn with a sl st to the top of any petal (in the center dc of the 3-dc cluster at the top of a petal).

Ch 5, sl st to top of next petal — rep around for all 6 petals.

You’ll now have 6 ch-5 arches connecting all your petals. Join with sl st.

Next, in each ch-5 arch:
Work (3 dc, ch 2, 3 dc) in arches that will form your corners. Work (3 dc) in arches that will form your sides.

Because we have 6 petals but need 4 corners, you’ll designate 4 arches as corners and 2 arches as side spaces. Work the side arches as simple 3-dc clusters and the corner arches as (3 dc, ch 2, 3 dc) with a ch-2 corner space.

Join with sl st to the top of first dc. Fasten off green if desired, or continue to Round 6.

Note: If the math of transitioning from 6 petals to 4 corners feels confusing, a helpful trick is to place stitch markers in the 4 arches you’ve chosen as corners before you begin Round 5. This removes the guesswork entirely and helps the square stay neat and symmetrical.

Round 6 — The Outer Border (Green)

Join green yarn (or reattach if you fastened off) to any corner ch-2 space.

Ch 3 (counts as first dc).

In the same corner ch-2 sp: work (2 dc, ch 2, 3 dc) — this is your corner.

Along each side: work 3 dc in each ch-1 or dc space between corners.

In each remaining corner ch-2 sp: work (3 dc, ch 2, 3 dc).

Join with sl st to the top of the beginning ch-3. Fasten off and weave in all ends.

Your sunflower granny square is complete! Give it a gentle block if desired and admire that gorgeous golden flower sitting perfectly inside its green frame.

Tips for Blocking Your Squares

Blocking is the process of using water and/or heat to relax and even out your finished squares. For a blanket or afghan, blocking each square before joining them makes the seaming process so much cleaner and your finished project look so much more polished.

To wet block, submerge your squares in cool water for about 10 minutes, gently squeeze out excess moisture (do not wring), then lay flat and pin into shape on a foam blocking mat. Let them dry completely before removing the pins. This usually takes several hours or overnight.

If you’re using acrylic yarn, steam blocking with a garment steamer held a few inches above the square works wonderfully. Never press a hot iron directly onto acrylic yarn.

How Many Squares Do You Need?

This is the question everyone asks when planning a blanket or afghan, and the answer depends entirely on the finished size you’re aiming for. Using 6-inch squares as a baseline:

A baby blanket measuring approximately 30 x 36 inches needs around 30 squares (5 across by 6 down).

A lap blanket measuring approximately 36 x 48 inches needs around 48 squares (6 across by 8 down).

A throw blanket measuring approximately 48 x 60 inches needs around 80 squares (8 across by 10 down).

A full Afghan measuring approximately 60 x 72 inches needs around 120 squares (10 across by 12 down).

These numbers assume your squares are the full 6 inches. If you block to 6.5 or 7 inches, you’ll need fewer squares for the same overall dimensions.

Joining Your Squares

There are several methods for joining granny squares, and the one you choose will affect both the look and the feel of your finished blanket.

The flat slip stitch join is one of the most popular options. It creates a subtle raised seam on the wrong side and a clean finish on the right side. Hold two squares with right sides together and slip stitch through both outer loops of each square simultaneously across the edge.

The join-as-you-go (JAYG) method is perfect if you want to avoid sewing altogether. Rather than completing all your squares and then joining them, you connect each new square to the previous one during its final border round. This is a huge time-saver for large afghans.

The single crochet join is slightly more visible than the slip stitch join but creates a wonderfully sturdy seam that holds up beautifully to washing and use. It’s a great choice for baby blankets that will see a lot of laundering.

The whip stitch join, done with a yarn needle, is the most traditional method and gives a very flat finish. It’s particularly nice when you want the seams to blend into the background color.

Yarn Color Ideas for Sunflower Blankets

While the classic yellow-brown-green combination is undeniably beautiful, don’t be afraid to experiment with your color palette. Here are a few fun ideas to get your creative wheels turning.

Autumn Harvest: Swap the yellow for deep orange or burnt sienna, keep the brown center, and use a rust or terracotta border. This version looks stunning as a fall throw.

Modern Minimalist: Work the petals in off-white or cream, use charcoal gray for the center, and a dusty sage for the border. The result is a sophisticated, neutral-toned square that fits any contemporary home.

Rainbow Garden: Make each square with a different petal color — coral, lavender, sky blue, mint, peach — and use a consistent white or cream border for all of them. Joined together, the effect is a vibrant, joyful patchwork that feels like a wildflower meadow.

Monochromatic Sunset: Use varying shades of a single color family — pale yellow, golden yellow, deep amber — with a dark chocolate center and a warm tan border. It’s subtle and cohesive.

Project Ideas Beyond Blankets

The sunflower granny square is incredibly versatile. Here’s some inspiration for what you can make beyond the classic blanket:

A single large square (worked to about 12–14 inches) makes a beautiful pillow cover front. Just pair it with a solid back panel and a zipper or envelope closure.

Stitch a row of five or six squares together for a table runner that looks gorgeous in a farmhouse or cottage-style dining room.

Make four smaller squares and join them for a fun, patchwork pot holder set. Use cotton yarn for heat resistance.

Sew a finished square onto the front of a plain canvas tote bag for a one-of-a-kind accessory.

Use smaller squares made with fingering or DK weight yarn as appliqués on baby clothing, cardigans, or denim jackets.

Caring for Your Finished Sunflower Blanket

Most worsted weight acrylic yarns are machine washable on a gentle cycle in cool water. Lay flat to dry to preserve the shape of your squares and prevent stretching. Avoid high heat in the dryer, as this can cause acrylic to felt slightly or lose its softness over time.

If you’ve used wool or a wool blend, hand washing in cool water with a gentle wool wash is the safest bet. Wool does not like agitation or sudden temperature changes.

Frequently Asked Questions

Can I make this pattern bigger? Yes! Simply continue adding rounds in your border color after Round 6. Each additional round will add approximately half an inch to three quarters of an inch to the overall square size, depending on your tension.

What if I don’t know how to do a magic ring? You can substitute a chain-4 join as mentioned earlier in the pattern. The hole in the center will be slightly larger, but it can be pulled tight as you work and is nearly invisible once the brown center stitches surround it.

Can I use a different weight yarn? Absolutely. DK weight yarn with a 4.0 mm hook will produce a smaller, finer square — great for baby items or appliqués. Bulky yarn with a 6.0 or 6.5 mm hook will produce a large, squishy square that works up incredibly fast. Just remember to adjust your square count when calculating how much yarn you’ll need for a blanket.

How do I calculate how much yarn I need? As a general rule, each worsted weight square uses roughly 15–20 yards of each color. Multiply that by your total square count to get an estimate, then add about 10–15 percent extra for seaming, weaving in ends, and any border work on the finished blanket.

Final Thoughts

There’s something deeply satisfying about transforming a simple ball of yarn into a square that looks like a little burst of sunshine. The sunflower granny square is the kind of pattern you’ll come back to again and again — not just because it’s beautiful, but because it’s genuinely enjoyable to make. The rounds are rhythmic, the color changes are satisfying,