Undaria Ruffle Scarf


  • Softly ruffled thanks to sets of short rows.
  • A slip stitch innovation that helps to create a pearly scalloped edge as you go.
  • 100% slip stitch crochet at a loose gauge for lacy drape (CYC #1 Fine wt. with a J/6mm hook).

More details below.


This 100% slip stitch crochet ruffled scarf pattern features short rowing. Undaria is self-edging, thanks to a second type of slip stitch that helps to create a pearly scallop. Fine yarn gives it a delicate fluttery weight, and using a large hook size means you make progress faster than you might expect. These slip stitches have uncommon drape and translucency. 

It’s the next step in my ongoing adventure in combining different kinds of slip stitches and short rows for my instant download crochet patterns. As a one-skein project, the accent is on the distinctive fin-like scarf ends. Add another skein to double its length and you can also wear it twisted as a long corkscrew scarf. The fabric is completely reversible.

Skill Level

Intermediate. This pattern combines two types of slip stitches and a short-row technique. I have written the pattern with few abbreviations, and provide International English equivalents for American measurements, yarn weights, and stitch terms. The UK & Australian equivalents are in brackets {}.

Slip Tectonics and the free patterns Eva’s Ribs and Slip Slope Scarf make great introductions to using slip stitches in short rows to crochet draping fabrics. 

After using this pattern you will know (if you didn’t already):

  • How to crochet a scarf with slip stitches that has soft, feminine drape
  • How to combine different kinds of slip stitches
  • How to use crochet short rows for a fluttery scarf
  • How to create a pearly slip stitch edging as you go

Finished Dimensions

One skein of yarn, measured flat: 27″ x 8″ {69 cm x 20 cm}. Two skeins of yarn doubles the length to 54″ {137 cm}.

The stitches I used create a stretchy fabric. When worn (measured hung), my one-skein scarf lengthens to 31″ {79 cm}. A two-skein Undaria would double in length: 62″ long measured hung/while worn.


  • Crochet Hook: Size J/10/6mm hook.
  • Yarn used for pictured Undaria: Crystal Palace Mini Mochi (80% merino wool, 20% nylon; 195yd/180 m per 1.75oz/50g ball): 1 or 2 skeins of color 312. (One skein scarf is shown above). 

Substituting a yarn: The best yarns for this project are soft wool blends because they add gentle drape and bouncy loft. (Some cotton yarns could add this bounce if blended with enough acrylic.) Alpaca would also probably look lovely. As you can see, long color changes in a self-striping yarn, or subtle tonal shades of a hand dyed yarn, work great for this design! Choose a smooth #1 super fine weight yarn that lists on its label a crochet hook size range from B/1/2.25mm-E/4/3.5mm. These yarns may also be referred to as fingering, baby, or sock weight {UK: 3-ply}. Some slightly thicker yarns, known as #3 fine or sport weight {UK: 4 ply} could work also. 

  • Recommended if you’re new to slip stitch crochet: 8 stitch markers (until you can recognize the last slip stitch of each row). 
  • Optional: 1 small button and matching sewing needle and thread for attaching it to one scarf end.

Additional information


Slip Stitch Crochet


PDF Download, Original or Rediscovered Stitch


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