MOD SHAMROCK COASTER; Castle Rock-WA

Paddy's Day is coming up 📅 … and I wanted a themed coffee mug ☕️ coaster - so, I designed this one, today 😉 

It's pretty easy to work up.

MOD Shamrock Coaster~March 9th, 2026

Materials: Worsted weight yarn (2 shades green & 1 yellow); #G/6 crochet hook; scissors; tapestry needle.

Terms used:

ch = chain 

sc = single crochet

jn - join

st = stitches

EA = each

rpt - repeat

sl st = slip stitch

EO = end off

Coaster: Ch 2 - not too tight … not too loose: make 8 sc in first ch; jn to 1st sc to make a foundational circle - do not turn

Foundational circle + ch 6

Row 1: Ch 6 & with hook, pull up 1 st in each ch - and between the 1st & 2nd sc of foundational circle.

Pull up 1 st in each ch - and between the 1st & 2nd sc of foundational circle.

Now, yarn over & draw yarn through the two loops on hook (much like and afghan st would be worked) until you have worked through each pulled loop …

Yarn over & draw yarn through the two loops on hook.

Row 2: C1 & begin begin working Tunisian st pattern in the front bar of EA sts, as follows: repeat the row 1 process - except this time work the last st in the front of foundational sc circle, before drawing yarn through the two loops on hook, as done previously.

Ch 1 at end of row.

Working of the end st into the front of the foundational circle sc.

Row 3: C1 & repeat the row 2 process - except this time work the last st in the back of same foundational sc circle st of row 2,  before drawing yarn through the two loops on hook, as done previously.

Back of work …

Working of the end st into the back of the foundational circle sc (front of work).

Row 4: C1 & repeat the row 2 process - except this time work the last st between the 1st & 2nd sc of foundational circle, before drawing yarn through the two loops on hook, as previously done.

Recap of [working of end st between sts] of foundational circle.

Continue the pattern sts in like manner, alternating the end sts as described in rows 2 through 4. These three rows will form the circular shaping of the coaster.

Pattern will form a circular shape.

Repeat pattern rows 2 through 4, around the foundational circle, until coaster shape is complete: 

Complete the circle …

Then line up the Tunisian st bars & work the pattern sts to form a nice seam - there will be a little rise to the seam, but not enough to throw a concerning wrinkle into the end result.

Line up Tunisian pattern bars and close the seam …

Sl st end st to first st, EO - weave in loose ends; embroider the design, & and begin the trim pattern.

Sl st end sts for a nice finish.

Weave in the loose ends, &  EO

Internet 4-leaf Clover Embroidery Graph.

General idea - it doesn't need to be a perfect Graph mimic.

Trim: Attach variegated yarn & begin edge trim as follows - *ch 1, sl st in next st*; rpt around, ending with a sl st in first sl st. EO & weave in loose ends.

Trimmed & ready for Paddy Day use.