Crochet Shamrock Coaster Pattern

St. Patrick’s Day is right around the corner—perfect for some festive DIY fun! I just finished making a pair of Shamrock Coasters, and I’m sharing the pattern for free so you can make your own.

Grab your supplies, channel some Irish luck, and get started with the free crochet shamrock coaster pattern below. Let’s get sham-rocking!

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These lucky square shamrock coasters add the perfect festive touch to your table, be it for resting a holiday drink on it or just embracing the St. Patrick’s Day spirit.

Want to take it up a notch? Crochet multiple squares and join them together for a matching table runner or other decorative accents!

Happy crocheting!

Crochet Supplies

Here’s what I used to create this shamrock coaster:

• Jute twine in yellow and green (2-ply, approximately 1.6 to 2 mm thick)
• 2.5 mm crochet hook
• Tapestry needle for weaving in those pesky loose ends

Want to use yarn from your stash? No problem! Here’s how to choose the alternative:

• Opt for cotton, bamboo, linen, or other natural fibers—they’re great for absorbency and heat resistance.
• Sport-weight yarn is a good choice to maintain the intended coaster size.
• If switching yarn types, make sure to match the yarn weight and hook size to keep the same crochet gauge. That way, your coaster will turn out just right!

Crochet Gauge

The gauge for this pattern (after blocking) is about

• 20 stitches x 20 rows, using single crochet stitches, to achieve a 4″ x 4″ square.

To ensure your coaster comes out the correct size, it’s important to check your gauge. Need help? Follow a gauge swatch tutorial to measure it accurately.

Finished Size

Once blocked and shaped, the square coaster measures approximately 3¾” x 3¾”.

Skills You’ll Need

Crochet Stitches

This pattern is perfect for beginners with some crocheting experience in colorwork! If you know how to chain (ch) and single crochet (sc), you’re all set for the challenge!

Colorwork Techniques

This coaster design involves color changes to create the shamrock pattern. You can use either the Tapestry or Intarsia crochet method.

For this tutorial, I’ve used reversible Intarsia Crochet, which keeps the design looking identical on both sides. Instead of carrying yarn behind the stitches, this technique uses separate yarn balls for each color section. The result? A neat, polished look from every angle!

Prefer the Tapestry method? Go for it! Just note that your coaster may turn out slightly larger due to the carried yarn within the stitches.

Crochet Shamrock Square Coaster Pattern

The pattern includes both a chart and written instructions for easy reference. These can be found in the pattern card below after the step-by-step tutorial section. Feel free to save, download, or print the pattern for your convenience.

Tutorial Steps

1. Prepare your yarn
   Split your yarn equally into the following to prepare for Intarsia Crochet:
   3 balls of yellow
   2 balls of green

2. Begin crocheting
   Using one of the yellow yarn balls, create a foundation chain of 20 stitches.
   Then, complete 3 rows of single crochet.

3. Bring the Shamrock to life
   In Row 4, introduce green yarn to form the shamrock. Follow the pattern for smooth color changes.
   When it is time to switch back to yellow in the row, use a new yarn ball—you’ll work with 5 working yarns (3 yellow, 2 green).
   Keep the yarn balls untangled for smooth progress.

4. Complete the shamrock
   At row 10, you will need to trim off some yarn colors and reintroduce them again at row 11 when the pattern transits to make the 2 top shamrock petals.
   Then, work 3 rows of yellow to complete the square coaster.

5. Weave in loose ends with a tapestry needle.

6. Block your coaster for a flat, square, polished finish—I used the wet blocking method and let it dry.

Done!

Bring on the beer and be an Irish for a day!

Happy St. Patrick’s Day!

You can find the written crochet pattern and the chart below. Just keep scrolling!

What’s Next:

• Start crocheting and share your completed handmade on Facebook and/or Instagram. Remember to tag us, @craftpassion, so we can see them.
• Pin it to Pinterest for a future To-Crochet List
• Share with your crochet groups for a crochet-along event.
• Browse more free crochet patterns to make. If you love to make similar Intarsia crochet projects, try the following:
  • Crochet Heart Coaster
  • Crochet Monstera Wall Hanging