3 Sizes Crochet Shamrock Hat Pattern for Beginners
I’m super excited to share my Crochet Shamrock Hat Pattern with you! This fun hat has a large shamrock on the front, perfect for celebrating St. Patrick’s Day. It’s designed for three sizes: toddler, child, and adult, so everyone in the family can join in the festive fun.
Imagine wearing this adorable hat and spreading some Irish luck. Grab your yarn and hook, and let’s make this charming hat together! The free crochet pattern is below.
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Free Crochet Shamrock Hat Pattern
Crochet Project Materials Needed
- Crochet hook size:
Hat: H-8 5 mm or hook needed to obtain gauge
Brim: G-6 4 mm - Yarn: Worsted weight yarn #4 in green and white
- Yarn needle: Use this to weave in your ends.
- Scissors: Use scissors to fasten off your yarn.
- Stitch marker(s): These help keep track of your stitches.
- Large pom pom maker: For making a pom pom for your hat.
Crochet Shamrock Hat Pattern Information
Skill Level
Advanced beginner
Finished Sizes
| Size | Circumference | Height |
| Toddler | 18-19 inches | 7 inches |
| Child | 19-20 inches | 7.5 inches |
| Adult | 20-23 inches | 8 inches |
Gauge
16 stitches and 14 rows = 4 inches
Crochet Terms
- hdc = half double crochet
- hdc2tog = half double crochet decrease
- ch/chs = chain/chains
- st/sts = stitch/stitches
- sc = single crochet
- rem = remaining
Pattern Notes
- The hat is worked flat from the bottom up in rows of half double crochet stitches.
- You can follow the picture graph or the written pattern.
- The written pattern tells you how many stitches to make in each color and in what order.
- The brim is made separately and then sewn onto the hat.
- Repeat instructions between the asterisks (*) for the rest of the round.
- Join each round (top of the hat) with a slip stitch to the first stitch made in that round.
- The beginning chain does not count as a stitch.
- ← You are working on the “right side”
- → You are working on the “wrong side”
- The pattern is written in US terms.
Crochet Shamrock Hat Pattern Instructions
Toddler Size Crochet Shamrock Hat Pattern
Download the toddler crochet shamrock hat pattern graph.
Following the example in row 1, chain 2 at the beginning of each row. Then, make the half double crochet stitches according to the written pattern, which tells you how many stitches to make in each color and in what order.
← Row 1: Ch 2, in white hdc 32, in green hdc 1, in white hdc 8, in green hdc 1, in white hdc 30, turn
→ Row 2: white x 29, green x 3, white x 5, green x 4, white x 31
← Row 3: white x 30, green x 5, white x 4, green x 2, white x 31
→ Row 4: white x 32, green x 2, white x 2, green x 6, white x 30
← Row 5: white x 28, green x 8, white x 1, green x 2, white x 33
→ Row 6: white x 29, green x 3, white x 2, green x 1, white x 1, green x 9, white x 27
← Row 7: white x 27, green x 10, white x 1, green x 6, white x 28
→ Row 8: white x 28, green x 16, white x 28
← Row 9: white x 29, green x 15, white x 28
→ Row 10: white x 28, green x 11, white x 33
← Row 11: white x 30, green x 6, white x 1, green x 6, white x 29
→ Row 12: white x 28, green x 7, white x 1, green x 7, white x 29
← Row 13: white x 28, green x 9, white x 1, green x 6, white x 28
→ Row 14: white x 29, green x 4, white x 2, green x 9, white x 28
← Row 15: white x 29, green x 8, white x 35
→ Row 16: white x 35, green x 7, white x 30
← Row 17: white x 32, green x 5, white x 35
→ Row 18: white x 36, green x 2, white x 34
Weave in the ends.
Child Size Crochet Shamrock Hat Pattern
Download the child crochet shamrock hat pattern graph.
Following the example in row 1, chain 2 at the beginning of each row. Then, make the half double crochet stitches according to the written pattern, which tells you how many stitches to make in each color and in what order.
← Row 1: Ch 2, in white hdc 34, in green hdc 1, in white hdc 8, in green hdc 1, in white hdc 32, turn
→ Row 2: white x 31, green x 3, white x 5, green x 4, white x 33
← Row 3: white x 32, green x 5, white x 4, green x 2, white x 33
→ Row 4: white x 34, green x 2, white x 2, green x 6, white x 32
← Row 5: white x 30, green x 8, white x 1, green x 2, white x 35
→ Row 6: white x 31, green x 3, white x 2, green x 1, white x 1, green x 9, white x 29
← Row 7: white x 29, green x 10, white x 1, green x 6, white x 30
→ Row 8: white x 30, green x 16, white x 30
← Row 9: white x 31, green x 15, white x 30
→ Row 10: white x 30, green x 11, white x 35
← Row 11: white x 32, green x 6, white x 1, green x 6, white x 31
→ Row 12: white x 30, green x 7, white x 1, green x 7, white x 31
← Row 13: white x 30, green x 9, white x 1, green x 6, white x 30
→ Row 14: white x 31, green x 4, white x 2, green x 9, white x 30
← Row 15: white x 31, green x 8, white x 37
→ Row 16: white x 37, green x 7, white x 32
← Row 17: white x 34, green x 5, white x 37
→ Row 18: white x 38, green x 2, white x 36
← Row 19: white x 76
Weave in the ends.
Adult Size Crochet Shamrock Hat Pattern
Download the adult crochet shamrock hat pattern graph.
Following the example in row 1, chain 2 at the beginning of each row. Then, make the half double crochet stitches according to the written pattern, which tells you how many stitches to make in each color and in what order.
← Row 1: Ch 2, in white hdc 38, in green hdc 1, in white hdc 8, in green hdc 1, in white hdc 36, turn
→ Row 2: white x 35, green x 3, white x 5, green x 4, white x 37
← Row 3: white x 36, green x 5, white x 4, green x 2, white x 37
→ Row 4: white x 38, green x 2, white x 2, green x 6, white x 36
← Row 5: white x 34, green x 8, white x 1, green x 2, white x 39
→ Row 6: white x 35, green x 3, white x 2, green x 1, white x 1, green x 9, white x 33
← Row 7: white x 33, green x 10, white x 1, green x 6, white x 34
→ Row 8: white x 34, green x 16, white x 34
← Row 9: white x 35, green x 15, white x 34
→ Row 10: white x 34, green x 11, white x 39
← Row 11: white x 36, green x 6, white x 1, green x 6, white x 35
→ Row 12: white x 34, green x 7, white x 1, green x 7, white x 35
← Row 13: white x 34, green x 9, white x 1, green x 6, white x 34
→ Row 14: white x 35, green x 4, white x 2, green x 9, white x 34
← Row 15: white x 35, green x 8, white x 41
→ Row 16: white x 41, green x 7, white x 36
← Row 17: white x 38, green x 5, white x 41
→ Row 18: white x 42, green x 2, white x 40
← Row 19: white x 84
→ Row 20: white x 84
Weave in the ends.
Assembling your Crochet Shamrock Hat Pattern
Lay your hat with the wrong side facing out. Use your tapestry needle to sew up the seam. Turn your hat inside out so that the right side is now facing out and the seam is on the inside.
Closing the Top of your Crochet Shamrock Hat Pattern
Join yarn to the top of the hat. You are going to work in the round.
Toddler Size
Rnd 1: Ch 2, *hdc2tog*, join (36 stitches)
Rnd 2: Ch 2, *hdc2tog*, join (18 stitches)
Child Size
Rnd 1: Ch 2, *hdc2tog*, join (38 stitches)
Rnd 2: Ch 2, *hdc2tog*, join (19 stitches)
Adult Size
Rnd 1: Ch 2, *hdc2tog*, join (42 stitches)
Rnd 2: Ch 2, *hdc2tog*, join (21 stitches)
Fasten off, leaving a long tail for sewing. Use your tapestry needle to sew the top closed.
Making the Brim of your Crochet Shamrock Hat Pattern
Brim is made separately and then sewn onto the hat. I used a G-6 4 mm crochet hook size.
Row 1: Ch 9, sc in 2nd ch from hook and each rem ch, turn (8 stitches)
Row 2: Ch 1, sc in each st in the back loops only, turn (8 stitches)
Toddler Size: Repeat row 2 for a total of 72 rows.
Child Size: Repeat row 2 for a total of 76 rows.
Adult Size: Repeat row 2 for a total of 84 rows.
Use your tapestry needle to sew the brim to the hat. Sew each stitch from the hat to a row of the brim. The brim will stretch as you go.
Add a Pom Pom to your Crochet Shamrock Hat Pattern
- Wind the yarn around both arches.
- Cut the yarn along the middle gap.
- Tie with a piece of scrap yarn.
- Open the arches and remove the pom pom.
- Trim any loose ends.
Attach the pom pom to the top of your hat.
Finishing your Crochet Shamrock Hat Pattern
Weave in your ends.
Looking for More Free Crochet Patterns?
You may also like my basic beanie, basic bucket hat, turkey hat, and pumpkin patch hat patterns.
Let’s Connect!
I’d love to hear from you. You can find me on social media: Instagram, Facebook, Pinterest, and my YouTube channel. Until then, happy crocheting!
