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crochetpatterndrop • easycrochetdrop Studio
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Tutorials & GuidesHook: 5.0 mm (US H/8) (Standard)

How to Crochet Shell Stitch: Free Step-by-Step Pattern & Scallop Border Guide

Create timeless scallop waves with the classic crochet shell stitch! Fan-shaped clusters of 5 double crochets anchored by single crochets produce a lush, undulating texture ideal for heirloom blankets and decorative borders.

By easycrochetdrop•2026-09-06•8 min read
Close-up of pastel pink crochet shell stitch swatch with undulating fan waves

Pattern Inspiration & Design Notes

Whether you are decorating your home for the autumn season or crafting gifts for friends, this pattern was designed from the ground up for relaxation and clean, crisp stitch definition.

One of the most common frustrations in crochet is vague sizing or running out of yarn right at the final row. That is why every stitch in this tutorial has been physically crocheted, swatch-tested, and audited with our designated 5.0 mm (US H/8) hook.

Official Free Pattern
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How to Crochet Shell Stitch: Free Step-by-Step Pattern & Scallop Border Guide

Original Pattern by easycrochetdrop • crochetpatterndrop Studio
PDF (20% OFF)
Hook Size (Strict)5.0 mm (US H/8)
Yarn WeightWorsted Weight (Category 4) Acrylic or Baby DK
Crafting Time40 - 50 Minutes
DifficultyEasy

Materials Checklist(Click to check off supplies)

0 / 4 Ready

Gauge & Tension Calibration

Standard Swatch: 2 shell repeats x 4 rows = 4 x 4 inches (10 x 10 cm) using Classic 5-dc Shell Stitch with your designated 5.0 mm (US H/8) hook.

Shell fabric has gentle natural stretch and drape

Important Pattern Notes

  • Stitch Multiple: Foundation chain must be a multiple of 6 stitches, plus 1 for the pattern, plus 1 for the turning chain (Multiple of 6 + 2 total).
  • Shell Definition: A 'shell' consists of 5 double crochets worked directly into the exact same stitch or space.
  • Anchor Stitch: Every shell is anchored on both sides by a single crochet (sc), which pulls the fan downward into an elegant crest.
  • Staggered Rows: In alternating rows, shells are worked directly into the center single crochet of the row below, creating an interlocking fish-scale texture.
  • Decorative Scallop Border: The 1-row shell sequence (*sc, skip 2, 5 dc in next, skip 2*) can be added around any finished blanket as a border.

Step-by-Step Instructions

Step 1Stitches: 1 base sc + 1 shell complete

Step 1: Foundation Multiple & Base Anchor Points

Working initial single crochet and first 5-dc shell fan into foundation chain
Single crochet in 2nd chain, skip 2 chains, and work 5 double crochets into the next chain.

Chain 26 loosely (multiple of 6 = 24, + 2 = 26).

Single crochet (sc) in the 2nd chain from your hook.

Skip the next 2 chains.

In the next chain, work 5 double crochets (5 dc) into that single chain space to form your very first shell fan.

Pro Tip: When working 5 dc into one chain, do not tug upward; let the hook rotate naturally into the loop to avoid stretching out the chain.
Step 2Stitches: 4 complete shells + 5 sc anchors

Step 2: Working Alternating Shells Across Row 1

Row 1 of shell stitch with fans anchored by single crochets across fabric
Repeat *skip 2, 5 dc in next, skip 2, 1 sc in next* ending with a single crochet in the last chain.

After completing your 5-dc shell, skip the next 2 chains.

Work 1 single crochet in the following chain to anchor the shell downward.

Repeat the sequence across: *skip 2 chains, 5 dc in next chain, skip 2 chains, 1 sc in next chain* across to the end of the row.

You will finish with a single crochet in the very last chain of your foundation.

Pro Tip: Ensure you have exactly 2 skipped chains between every shell and every single crochet anchor.
Step 3Stitches: Interlocking staggered shells

Step 3: Offset Alternation for Interlocking Waves (Row 2 & Beyond)

Row 2 interlocking shells creating dense undulating scallop waves
Work half-shells at row edges and full shells into sc spaces to produce interlocking waves.

Chain 3 and turn your work (counts as the first dc of a half-shell). Work 2 dc in the very first sc at the base of chain (3 dc total half-shell).

Skip 2 dc of the shell below, work 1 sc into the center (3rd) dc of the shell below.

Skip 2 dc, work a full 5-dc shell directly into the next single crochet anchor.

Repeat across, finishing with 3 dc (half-shell) in the final single crochet. Chain 1, turn, and work Row 3 to reset full shells.

Pro Tip: Row 2 starts and ends with a 3-dc half-shell; Row 3 starts and ends with a single crochet. This creates straight vertical side margins.

Tag @stitchandpetal on Instagram so we can share your finished make!

Frequently Asked Questions

Frequently Asked Questions

Clear answers to common gauge, yarn weight, and technique inquiries

The standard classic shell stitch multiple is 6 + 2 chains (e.g. 26, 32, 62, 122 chains). For a baby blanket, chain 122 to get 20 complete shells across.

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