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The Cornflower Sweater Pattern

The Cornflower Sweater Pattern
4.7★ Rating
5-7 Hours Time Needed
4.1K Made This
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Intermediate Level

Ideal for those with basic crochet experience, featuring slightly more advanced stitches and techniques to expand your skills.

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Weekend Treat

Takes 5-7 hours, making it an enjoyable project to finish over a couple of days.

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Casual Chic

Relaxed style with a modern twist, perfect for everyday wear while maintaining that handcrafted uniqueness.

About This The Cornflower Sweater Pattern

This pattern creates an oversized sweater built from floral crochet squares that are joined into front and back panels. You will learn a petal-style triple crochet cluster used to form the flower motif and a simple edging to square things off. The layout is modular so you can adjust width, arm span, and length to suit your style.

The Cornflower Sweater Pattern crochet pattern - detailed view of completed project

Make several 8-inch squares, block them for even shape, and sew into panels to create the sweater. The pattern includes step-by-step petal instructions, assembly diagrams, and finishing tips.

Why You'll Love This The Cornflower Sweater Pattern

I absolutely love this pattern because it combines a pretty floral motif with a relaxed, wearable silhouette that feels special but approachable. I enjoy how the modular square construction makes it easy to customize the fit and length for any wearer. The petal stitch produces a beautiful texture that stands out even when worn over a simple top. Sewing the squares together creates a lovely braided seam that feels artisanal and polished. Working this pattern is meditative and rewarding—each square is a little victory toward the finished sweater.

The Cornflower Sweater Pattern step 1 - construction progress The Cornflower Sweater Pattern step 2 - assembly progress The Cornflower Sweater Pattern step 3 - details and accessories The Cornflower Sweater Pattern step 4 - final assembly and finishing

Switch Things Up

I love customizing this pattern by swapping the yarn color palette; try ombre blues or a mix of neutrals for a different vibe.

To make the sweater larger, I add extra squares across the chest or an additional row for longer length—count your squares and preview the layout before sewing.

I sometimes use a bulkier yarn and larger hook to create a chunkier, warmer version that works great as a winter pullover.

For a delicate look, I use a lighter weight yarn and a smaller hook to make a lacy, drapey version that layers nicely over dresses.

I like to experiment with edging: a simple single crochet border tightens the edges, while picot adds a decorative finish.

Try lining the sweater with a lightweight fabric or a simple camisole if you want more coverage with the open floral squares.

I often change sleeve length by adding or removing rows of squares—shorter sleeves are quick and stylish for spring.

To make a cardigan instead of a pullover, I split the front panel and add an edging with buttonholes so it opens down the center.

If you want more structure, I join squares with slip stitch seams or whipstitch instead of the running stitch to create a firmer seam.

I also enjoy mixing square motifs: combine these flower squares with plain solid squares for contrast and a more geometric look.

Common Mistakes & How to Fix Them

✗ Skipping blocking before assembly can leave squares uneven and misaligned; always block each square to the same measurements before sewing for a neat finish. ✗ Sewing squares with right sides facing can hide the intended double-braided seam; place wrong sides together and use a running stitch to achieve the correct seam texture. ✗ Not counting chains at the beginning of rounds may reduce petal count and distort the motif; remember chains at round starts count as stitches and recount after each round. ✗ Rushing petal clusters can lead to inconsistent stitch heights and gaps; work the tc cluster steps slowly and keep consistent tension when pulling loops through. ✗ Forgetting to test gauge with an initial square will affect final sweater dimensions; make at least one practice square and measure it before committing to the full number of squares.

The Cornflower Sweater Pattern

Make a lightweight, oversized Cornflower Sweater using floral crochet squares for a boho-chic look. This pattern walks you through making the flower squares, blocking, and sewing panels together so you can customize fit and length. Ideal for makers who enjoy modular crochet and creative assembly—dress it up or keep it casual for effortless style.

Intermediate 5-7 Hours

Materials Needed for The Cornflower Sweater Pattern

— Main Fabric

  • 01
    Weight 4 yarn of choice (I used a cotton/nylon blend)

— Tools Required

  • 01
    5mm - 6mm crochet hook
  • 02
    Yarn needle for sewing squares together
  • 03
    Blocking materials (pins, mats, spray or steam)
  • 04
    Stitch markers, as needed

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— Materials :

Info :

Weight 4 yarn of choice (I used a cotton/nylon blend). 5mm - 6mm crochet hook. Yarn needle for sewing squares together. Blocking materials. Stitch markers, as needed.

— Abbreviations :

Infos :

Sl st - slip stitch. Yo - yarn over. Ch - chain stitch. Tc - triple crochet stitch. Sk - skip. Brackets represent a group of stitches that will be repeated the number of times specified. For example, "[ch 7, sl st] x4" means to repeat the series inside the brackets 4 times.

— Square :

Round 1 :

Slip knot. Ch 6 and sl st to the first stitch.

Round 2 :

Ch 4, tc in the same st where you placed the sl st, ch 1. [All in the same stitch: tc, ch1, tc, ch1] x5. You should now count 12 tc st total, including the "ch 4". Find the "ch 4" you started this round with and sl st to the 3rd ch st.

Info :

*Note that chains at the beginnings of rounds count as stitches! Think of this "ch 4" as a "tc, ch 1".

Info :

Tc instructions: Yo twice, insert hook into stitch and pull up a loop. Yo and pull through the first 2 loops. You should have 3 loops. Yo and pull through the next 2 loops. You should have 2 loops now. Yo and pull through the remaining 2 loops.

Round 3 :

Each of the flower petals is essentially a tc 4 together, placed in the same stitch. The first petal will be a bit different from the others. Ch 2. Yo 2 times. Insert the hook under the next ch st of the round below. Pull up a loop. Yo and pull through the first 2 loops. You will have 3 loops left on your hook. Yo and pull through the next 2 loops. You should have 2 loops left on your hook.

Round 3 :

[Yo 2 times and insert the hook under the same ch st. Pull up a loop. Yo and pull through the first 2 loops. Yo and pull through the next 2 loops.] x2 You should now have 4 loops on your hook. Yo and pull through all 4 loops. Ch 4.

Round 3, continued :

[Yo 2 times and insert the hook under the next ch st of the row below. Pull up a loop. Yo and pull through the first 2 loops. Yo and pull through the next 2 loops.] x4. You should have 5 loops on your hook. Yo and pull through all 5 loops. Ch 4. Repeat the above "petal stitch" for every ch st you made in round 2. You should have 12 petals total. Sl st to the stitch at the top of the first petal.

Round 4 :

[Ch 7 sk 4 sl st] x12. Place your last sl st right before the first st of the round.

Round 5 :

Ch 7, sk 3, sl st (the sl st should be in the peak of that first chain loop).

Round 5 :

[Ch 7, sk 7, sl st] x2. Ch 4, sk 3, tc, ch 4, sk 3, sl st. <- Repeat this whole line a total of 3 times.

Round 5 :

[Ch 7, sk 7, sl st] x2. Ch 4. Find the first chain of this round and sl st to the 4th ch st.

Round 6 :

For this round, you will be placing one tc in each ch st. Ch 3, tc 3, ch1, sk1. [Tc 3, ch 1, sk1] x4. Tc 4, ch3, sk1.

Round 6 :

Tc 4, ch1, sk1. [Tc 3 ch 1 sk1] x4. Tc 4, ch3, sk1. <- Repeat this line a total of 3 times. Find the chain that started this round - sl st to the 3rd ch st. Tie off.

Info :

Repeat from the beginning to create several squares before moving on to assembly. Each square should measure about 8 inches wide. For best results, you will need to block your squares to even out the shape before assembly!

— Sewing squares together :

Info :

After blocking, put 2 squares together with the wrong sides facing each other. Use a running stitch along the edge, threading the yarn back and forth through each stitch. When you get to the "ch 3" corners, sew the first ch st. When you unfold the squares, you should see a double braided texture at the seam.

— Assembly :

Info :

The Cornflower Sweater is meant to be oversized, so the dimensions are not intended to be exact. Choose the dimensions that you feel suit you best, and don't be afraid to overshoot the measurements for a draping, graceful look! Make two panels that look like this. One will be the front panel, and one will be the back.

Info :

Line up your front and back panels and sew them together along the indicated seams to create shoulder and side seams as desired. Weave in any stray ends.

Assembly Instructions

  • Make two panels of floral squares (one front, one back) and block all squares to the same dimensions before assembly.
  • Line up your front and back panels and sew shoulder seams first using a running stitch with wrong sides together, then sew side seams as shown in the diagram.
  • When sewing squares together, place wrong sides facing and use a running stitch through each edge stitch; sew the ch-3 corner stitches carefully to maintain corner alignment.
  • Add additional rows of squares along the arm span if you need more arm room, then trim or finish edges as desired.
  • Weave in all stray ends and gently steam or press the finished sweater if needed after assembly.

Important Notes

  • 💡Block every square to the same measurements before sewing to ensure flat, even panels and correct sweater dimensions.
  • 💡Use wrong sides together when sewing with a running stitch to create the decorative double-braided seam on the right side.
  • 💡Keep consistent tension when making petal clusters so petals are uniform and the round counts remain accurate.
  • 💡Count stitches after each round, and remember that chains at the start of a round count as stitches

This Cornflower Sweater pattern is a joyful blend of floral motifs and wearable design, perfect for gifting or keeping. Each petal cluster and braided seam adds charm and texture to an oversized, relaxed silhouette. Make it your own with color and size variations—happy crocheting! 🧶🌸

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FAQs

What size will the finished piece be?

The finished sweater size depends on how many squares you make and the layout; each square measures about 8 inches wide before blocking so plan panels accordingly.

Can I use different yarn weights for this pattern?

Yes, you can use different yarn weights, but this will alter the finished square size and overall sweater dimensions; adjust hook size and number of squares to compensate.

Do I need prior crochet experience for this pattern?

This pattern is rated intermediate because it uses triple crochet clusters (tc), petal cluster techniques, and assembly of multiple squares, so familiarity with clusters and sewing motifs is recommended.

How long does this project typically take to complete?

Most crocheters finish the basic squares and assembly in about 5-7 hours for a small to medium project, though total time will vary by number of squares and finishing time.