Decorate for Saint Patrick's Day with this simple and cute Free Crochet Shamrock Coaster Pattern! Start your day with a bit of luck and your morning coffee!

I love crocheting things for holidays, like my crochet jack o'lanterns for Halloween, crochet candy cane striped blanket for Christmas, and crochet heart keychains for Valentine's Day. But I always find it challenging to make things for Saint Patrick's Day.
Saint Patrick's Day falls on March 17th every year, which can sometimes coincide with other holidays like Easter, Mardi Gras, etc. This often means that by the time you make and set up decorations, it's already time to take them down for the next celebration.
During this time of year, I like to keep decorations simple so I can easily switch them out for spring festivities. This year, my favorite crochet item for Saint Patrick's Day is my crochet shamrock coasters, made using my free pattern.
The design was inspired by Valentine's Day hearts I crocheted as small gifts for my preschooler to hand out at a school party. After making a few, my kid arranged them into patterns, and I realized they resembled shamrocks!
Who knew you could make a shamrock from just a few hearts? It’s one of the easiest ways to create that iconic shape. So, let's get started on the pattern!
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✏️ Things To Note:
- Yarn Choice: I used cotton yarn for the shamrock coaster. I do not recommend using acrylic yarn, as it doesn’t absorb liquid well, especially condensation.
- Assembly Method: This pattern is made by sewing the hearts together strategically. If you prefer, you can also crochet them together if that is easier for you.
- Finished Size: The shamrock is roughly 4.5-5.5 inches wide, making it perfect for most cups of any size.
🪡 Materials Needed
💭Abbreviations to Remember (US terms)
- Abbreviations:
- Chains - ch
- Double Crochet - dc
- Magic Ring - mr
- Slip Stitch - sl st
- Triple Crochet - tr
- Half Double Crochet - hdc
🧋Variations
Feel free to switch out the colors if you'd like. You can also optionally crochet around the shamrock once it's sewn together for a cleaner finish.
By adding an extra heart to the shamrock, you can make a four-leaf clover version.
🍵Instructions for Crochet Shamrock Coasters
This pattern is made in individual pieces and then sewn together.
Round 1: Make a mr loop, then ch x2 and dc x15 inside of the ring. Sl st to the top of the 1st dc you made and then pull the mr tail tight.
Round 2: Ch x2 and then dc into the same stitch. Make 4tr into the next stitch. 2dc into the following stitch and then make a hdc in each of the next 4 stitches.
Now we are at the bottom of the heart:
Dc, tr, dc in the next stitch (this will help create the point on the hearts bottom as well as help you turn to the other side.
Other side of the heart:
Hdc into the next 4 stitches, 2dc into the following stitch, 4tr into the next stitch, dc into the next stitch. Then ch x2 and sl st into the same stitch.
You should now have a heart shape. Fasten off and leave a tail for sewing.
Make 3 hearts and arrange them with pointy ends touching each other.
Sew the edges of the hearts that are touching together.
Then after the sewing has been completed you will want to create the stem for the shamrock.
Rejoin the yarn at the base of the hearts and ch x8. Then in the second chain from the hook make a hdc. Make 5 more hdc in the chains. Then sl st to the base of the shamrock. Fasten off and weave in any ends.
Optionally instead of fastening off the yarn you can crochet around the edge of the shamrock for a cleaner edge (which is what I do).
And now you have a cute crochet Saint Patrick's Day decoration! A crochet shamrock coaster made from my free crochet shamrock coaster pattern! And now that you know how to make 1, you can make a whole set of them!

🐌Expert Tips
- Use Clips or Pins for Better Alignment: When sewing the hearts together, consider using clips or pins to hold the pieces in place. This will help ensure the hearts line up neatly while you sew.
- Choose the Right Yarn for Absorbency: Natural fibers like cotton, bamboo, hemp, and wool are best for coasters since they can absorb liquids. Avoid synthetic yarns, as they tend to repel water and may not withstand heat.
- Leave Long Tails for Sewing: When fastening off, leave long tails. This makes sewing the pieces together easier and reduces the need for additional knots, which can create unwanted bulk.
- Crochet Around the Edges for a Finished Look: Crocheting around the edges of the assembled shamrock will give it a cleaner, more professional appearance. It can also help make the coaster more durable.
🧵Pattern FAQs
Yes! Just add an additional heart to the pattern to create a four-leaf version.
I recommend natural fibers like cotton, bamboo, hemp, and wool for their heat resistance and ability to absorb moisture. Synthetic yarns should be avoided as they can melt or fail to absorb liquids properly.
Pretty much! Just keep in mind the size—you don't want it too small or too big, so adjust as needed.
🧶More Coaster Patterns
If you tried this Free Crochet Shamrock Coaster Pattern (or any other pattern on my website), please let me know how it went in the 📝 comments below. I'd love to hear from you!
Free Crochet Shamrock Coaster Pattern
Materials
Abbreviations (US terms)
- ch = Chain
- dc = Double Crochet
- mr = Magic ring
- sl st = Slip Stitch
- tr = Triple Crochet
- hdc = Half Double Crochet
Notes
- Pattern consists of individual pieces sewn together.
- Use cotton yarn for better liquid absorption; avoid acrylic.
- Hearts can be sewn or crocheted together.
- Shamrock size: approximately 4.5-5.5 inches wide.
- Experiment with colors; crochet around the shamrock for a polished finish.
- Add an extra heart to create a 4-leaf clover.
Instructions
Crochet Heart x3:
- For this pattern we will be working in the round.
- Round 1: Make a mr loop, then ch x2 and dc x15 inside of the ring. Sl st to the top of the 1st dc you made and then pull the mr tail tight.
- Round 2: Ch x2 and then dc into the same stitch. Make 4tr into the next stitch. 2dc into the following stitch and then make a hdc in each of the next 4 stitches.
- Now we are at the bottom of the heart:
- Dc, tr, dc in the next stitch (this will help create the point on the hearts bottom as well as help you turn to the other side.
Other side of the heart:
- Hdc into the next 4 stitches, 2dc into the following stitch, 4tr into the next stitch, dc into the next stitch. Then ch x2 and sl st into the same stitch.
- You should now have a heart shape. Fasten off and leave a tail for sewing.
- Once the 3 green hearts have been made, arrange them together with points touching and sew the edges of the hearts that are touching together.
- Then after the sewing has been completed you will want to create the stem for the shamrock.
- Rejoin the yarn at the base of the hearts and ch x8. Then in the second chain from the hook make a hdc. Make 5 more hdc in the chains. Then sl st to the base of the shamrock. Fasten off and weave in any ends.
- Optionally instead of fastening off the yarn you can crochet around the edge of the shamrock for a cleaner edge (which is what I do).
- And now you have a cute crochet Saint Patrick's Day decoration!
Debra J Azamar says
How does one do a magic ring? Or how do u do it the other way?
Kimberly Arenas says
Magic rings also known as magic circles are how most people crochet in the round, its hard to explain how to make one since they can be tricky to make. An alternative to this is to ch x4 and then sl st to the 1st chain you made - then work inside of the circle.
Katie says
Love the pattern! When you say "crochet around the edges for a cleaner edge", do you use a specific stitch? Thanks!
Kimberly Arenas says
You can do single crochet, but if you have a different stitch in mind that can work you can do that too!
Wanda Poole says
I have used patterns for these designs through the years. Simple & ❤️ beautiful. Great as a 📍 pin to wear on coat. Great kitchen items. Even to make Baby's Blanket. Thanks for these reminders of beauty.