C2C shamrock crochet pattern

This C2C crochet shamrock pattern is a fun and festive square for St. Patrick’s Day projects! The four-leaf clover design is worked with the corner-to-corner crochet method and is perfect for blankets, pillows, wall hangings, tote bags, and lucky handmade gifts.

Why you’ll love this pattern

• Perfect panel size — Matches the 40×40 panels used in my C2C blanket collections, so it fits seamlessly with your other designs.
• Beginner-friendly colorwork — Only two colors are used, making it a great introduction to C2C graph reading and color changes.
• Versatile project options — Use it as wall decor, a pillow front, a baby blanket square, or combine it with other themed panels.
• Seasonal but timeless — Ideal for St. Patrick’s Day, Irish-themed rooms, or spring decorating.
• Clean, bold design — The shamrock shape stands out beautifully against the background for a crisp pixel-style finish.

C2C shamrock crochet pattern details

Here’s a quick overview of the materials, sizing, gauge, and pattern notes before you begin.

Skill level

Advanced beginner — This crochet panel is made with basic stitches using the C2C crochet method and it involves color changes.

Materials needed

• Crochet hook — G-6 (4 mm)
• Worsted weight yarn (#4) — in white and green
• Yarn needle — to weave in ends
• Scissors — to cut yarn and fasten off
• Stitch marker(s) — optional, helpful for keeping track of rows

Finished size

Approximately 22 inches by 22 inches (56 cm by 56 cm)

Gauge

8 C2C blocks = 4 inches (10 cm)

Crochet abbreviations

• dc = double crochet
• sc = single crochet
• ch/chs = chain/chains
• st/sts = stitch/stitches
• sl st = slip stitch

Pattern notes

• The panel is made in the C2C technique. You make “blocks” in diagonal rows starting in the bottom right corner and ending in the top left corner.
• Each block is made of a chain 3 + 3 double crochet.
• Chain 6 to start a new row and chain 3 to start a new block.
• You can follow the graph or the written pattern.
• The written pattern tells you how many blocks to make of each color and in what order.
• ↙ You are working on the “right side”.
• ↗ You are working on the “wrong side”. 
• The pattern is written in US terms.

Free C2C shamrock crochet pattern instructions

Make the shamrock following the graph or the written instructions.

Graph

Download the C2C shamrock crochet pattern graph below.

Written instructions

↙ Row 1: white x 1 (1 block)
↗ Row 2: white x 2 (2 blocks)
↙ Row 3: white x 3 (3 blocks)
↗ Row 4: white x 4 (4 blocks)
↙ Row 5: white x 5 (5 blocks)
↗ Row 6: white x 6 (6 blocks)
↙ Row 7: white x 7 (7 blocks)
↗ Row 8: white x 8 (8 blocks)
↙ Row 9: white x 9 (9 blocks)
↗ Row 10: white x 10 (10 blocks)
↙ Row 11: white x 11 (11 blocks)
↗ Row 12: white x 12 (12 blocks)
↙ Row 13: white x 13 (13 blocks)
↗ Row 14: white x 14 (14 blocks)
↙ Row 15: white x 15 (15 blocks)
↗ Row 16: white x 16 (16 blocks)
↙ Row 17: white x 17 (17 blocks)
↗ Row 18: white x 18 (18 blocks)
↙ Row 19: white x 5, green x 3, white x 11 (19 blocks)
↗ Row 20: white x 11, green x 5, white x 4 (20 blocks)
↙ Row 21: white x 4, green x 10, white x 7 (21 blocks)
↗ Row 22: white x 7, green x 10, white x 5 (22 blocks)
↙ Row 23: white x 5, green x 11, white x 7 (23 blocks)
↗ Row 24: white x 7, green x 11, white x 6 (24 blocks)
↙ Row 25: white x 6, green x 11, white x 8 (25 blocks)
↗ Row 26: white x 1, green x 1, white x 6, green x 11, white x 7 (26 blocks)
↙ Row 27: white x 7, green x 11, white x 5, green x 3, white x 1 (27 blocks)
↗ Row 28: white x 2, green x 4, white x 3, green x 11, white x 8 (28 blocks)
↙ Row 29: white x 9, green x 10, white x 2, green x 4, white x 4 (29 blocks)
↗ Row 30: white x 7, green x 3, white x 1, green x 10, white x 2, green x 3, white x 4 (30 blocks)
↙ Row 31: white x 4, green x 5, white x 1, green x 9, white x 1, green x 2, white x 9 (31 blocks)
↗ Row 32: white x 11, green x 1, white x 1, green x 8, white x 1, green x 6, white x 4 (32 blocks)
↙ Row 33: white x 4, green x 7, white x 1, green x 7, white x 1, green x 1, white x 2, green x 3, white x 7 (33 blocks)
↗ Row 34: white x 7, green x 5, white x 1, green x 16, white x 5 (34 blocks)
↙ Row 35: white x 5, green x 16, white x 1, green x 6, white x 7 (35 blocks)
↗ Row 36: white x 7, green x 7, white x 1, green x 15, white x 6 (36 blocks)
↙ Row 37: white x 6, green x 23, white x 8 (37 blocks)
↗ Row 38: white x 8, green x 23, white x 7 (38 blocks)
↙ Row 39: white x 8, green x 23, white x 8 (39 blocks)
↗ Row 40: white x 9, green x 23, white x 8 (40 blocks)
Corner: Start decreasing on both ends
↙ Row 41: white x 7, green x 23, white x 9 (39 blocks)
↗ Row 42: white x 9, green x 22, white x 7 (38 blocks)
↙ Row 43: white x 6, green x 23, white x 8 (37 blocks)
↗ Row 44: white x 8, green x 23, white x 5 (36 blocks)
↙ Row 45: white x 5, green x 22, white x 8 (35 blocks)
↗ Row 46: white x 7, green x 23, white x 4 (34 blocks)
↙ Row 47: white x 3, green x 14, white x 1, green x 9, white x 6 (33 blocks)
↗ Row 48: white x 6, green x 8, white x 1, green x 5, white x 1, green x 8, white x 3 (32 blocks)
↙ Row 49: white x 3, green x 7, white x 1, green x 6, white x 1, green x 8, white x 5 (31 blocks)
↗ Row 50: white x 5, green x 7, white x 1, green x 7, white x 1, green x 7, white x 2 (30 blocks)
↙ Row 51: white x 2, green x 6, white x 1, green x 8, white x 1, green x 7, white x 4 (29 blocks)
↗ Row 52: white x 4, green x 6, white x 1, green x 9, white x 2, green x 3, white x 3 (28 blocks)
↙ Row 53: white x 7, green x 10, white x 1, green x 5, white x 4 (27 blocks)
↗ Row 54: white x 4, green x 3, white x 3, green x 10, white x 6 (26 blocks)
↙ Row 55: white x 5, green x 11, white x 9 (25 blocks)
↗ Row 56: white x 8, green x 11, white x 5 (24 blocks)
↙ Row 57: white x 4, green x 11, white x 8 (23 blocks)
↗ Row 58: white x 7, green x 12, white x 3 (22 blocks)
↙ Row 59: white x 3, green x 12, white x 6 (21 blocks)
↗ Row 60: white x 6, green x 12, white x 2 (20 blocks)
↙ Row 61: white x 2, green x 12, white x 5 (19 blocks)
↗ Row 62: white x 5, green x 11, white x 2 (18 blocks)
↙ Row 63: white x 2, green x 10, white x 5 (17 blocks)
↗ Row 64: white x 5, green x 5, white x 1, green x 3, white x 2 (16 blocks)
↙ Row 65: white x 7, green x 3, white x 5 (15 blocks)
↗ Row 66: white x 14 (14 blocks)
↙ Row 67: white x 13 (13 blocks)
↗ Row 68: white x 12 (12 blocks)
↙ Row 69: white x 11 (11 blocks)
↗ Row 70: white x 10 (10 blocks)
↙ Row 71: white x 9 (9 blocks)
↗ Row 72: white x 8 (8 blocks)
↙ Row 73: white x 7 (7 blocks)
↗ Row 74: white x 6 (6 blocks)
↙ Row 75: white x 5 (5 blocks)
↗ Row 76: white x 4 (4 blocks)
↙ Row 77: white x 3 (3 blocks)
↗ Row 78: white x 2 (2 blocks)
↙ Row 79: white x 1 (1 block)

Adding a border

After you finish the last square, continue crocheting around the border.

Ch 1, then work 2 sc in the side of each C2C block along the edges. In each corner, work (2 sc, ch 2, 2 sc) to keep the corners square.

Finishing

Weave in all of the ends.

How to use this C2C shamrock panel

This 22-inch (56 cm) square panel can be finished in several ways:

• Add a simple single crochet border and use it as wall decor
• Seam two panels together to create a festive pillow cover
• Join multiple 40×40 panels for a larger blanket
• Add a wide border to turn it into a baby blanket

Because it’s worked in traditional C2C with 3 double crochets per block, it maintains the same structure and drape as your other C2C blanket panels.

Because all panels are built using the same dimensions and structure, there’s no resizing or stitch math required. Simply mix, match, and join.

Keeping your panel size consistent makes it easy to grow your C2C crochet library over time while maintaining a polished, cohesive blanket layout.

Frequently asked questions

What does C2C mean in crochet?
C2C stands for corner-to-corner. You start at one corner of the square and work diagonally to the opposite corner using blocks made of chain stitches and double crochet.

Do I have to use the graph?
No. You can follow either the pixel graph or the written row-by-row instructions included in the pattern.

Can I use different yarn?
Yes. You can substitute any worsted weight (#4) yarn. Just check your gauge to keep the panel close to 22 inches (56 cm).

Can I make this into a larger blanket?
Absolutely. Combine this 40×40 panel with other matching C2C panels or add a wide border to increase the overall size.

Is this pattern beginner-friendly?
Yes. It’s best for advanced beginners who are comfortable with double crochet and basic color changes.

C2C video tutorial

Need C2C help? I have a step by step C2C tutorial for my mini heart square on my YouTube channel.

More free C2C crochet patterns

Want to make more mini panels and graph-style designs? Browse my full collection of free C2C crochet patterns. If you need help following the written directions, my guide on how to read a crochet pattern is a helpful place to start.

More St. Patrick’s Day crochet patterns

If you love decorating with rainbows and lucky greens, you’ll also enjoy these festive St. Patrick’s Day crochet patterns. From shamrocks to seasonal home décor, these projects are perfect for adding a handmade touch to your spring decorating.

Scroll through the gallery below to find your next lucky crochet project.

Let’s connect!

I’d love to see what you’re making! Share your finished project and follow along for more free crochet patterns and tutorials.

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📌 Don’t forget to pin this pattern for later!
Happy crocheting! 🧶
— Melissa