The shell stitch is one of those classic crochet stitches that looks far more complex than it actually is. Once you complete the first repeat, the rhythm clicks and you’ll barely need to look at the pattern. The result is a blanket with beautiful fan-shaped shells that drapes softly and photographs beautifully — exactly what you want for a handmade baby gift.
This version is worked in a soft DK cotton in a single colour, which lets the stitch texture do all the talking. The finished blanket measures approximately 30 × 32 inches (76 × 81 cm) — a generous newborn size that works as a swaddle, stroller blanket, or tummy time mat.
Shell stitches have a natural drape and yarn choice makes a big difference. DK weight cotton or bamboo-cotton blend is ideal — soft against newborn skin, breathable, and machine washable. Light worsted (size 4) also works for a slightly chunkier blanket. Avoid anything heavier — the shells lose their delicate definition. Our pick: Lion Brand 24/7 Cotton DK in Almond or Dusty Pink, approximately 800 yards (730 m).
Materials
- Yarn: DK weight (size 3) — approx 800 yds (730 m). Any soft, washable DK cotton or cotton-blend.
- Hook: 4.0 mm (US G/6)
- Other: Scissors, tapestry needle
Gauge & Sizing
Shell gauge: 2 shells × 8 rows = 4 inches (10 cm)
Work a small swatch of 3–4 shells before starting. If your shells are smaller than 2 inches wide, go up a hook size. If larger, go down.
| Size | Finished Width | Finished Length | Starting Chain |
|---|---|---|---|
| Small (newborn) | 26 in / 66 cm | 28 in / 71 cm | ch 117 |
| Standard (0–6 months) | 30 in / 76 cm | 32 in / 81 cm | ch 133 |
| Lap (6–12 months) | 34 in / 86 cm | 36 in / 91 cm | ch 149 |
Instructions are written for Standard size. Adjust the starting chain by multiples of 8 to change width.
Abbreviations
| ch | chain |
| sc | single crochet |
| dc | double crochet |
| sk | skip |
| st(s) | stitch(es) |
| rep | repeat |
| RS | right side |
Pattern is written in US terms.
Pattern Instructions
The shell stitch multiple for this pattern is 8 + 5. Shells are formed by working 5 dc into a single stitch. The sc between shells anchors each fan and keeps the blanket flat. Do not count the turning chain as a stitch.
Foundation chain: Ch 133.
Row 1 (RS): Sc in 2nd ch from hook. *Sk 3 ch, 5 dc in next ch (shell made), sk 3 ch, sc in next ch. Rep from * across. Turn. [16 shells]
Row 2: Ch 3 (does not count as st). Dc in first sc. *Sc in 3rd dc of next shell (centre dc), 5 dc in next sc. Rep from * across, ending sc in 3rd dc of last shell, 2 dc in last sc. Turn.
Note: Row 2 is a “half row” — the edge shells are only half-shells (2 dc instead of 5). This keeps the edges straight.
Row 3: Ch 1. Sc in first dc. *5 dc in next sc, sc in 3rd dc of next shell. Rep from * across, ending 5 dc in last sc, sc in top of turning ch. Turn.
Rows 4 onwards: Repeat Rows 2 and 3 alternately until blanket measures approximately 32 inches (81 cm) from beginning, ending with a Row 3 repeat.
Final row: Ch 1. Sc in first dc. *Sc in each of next 5 dc, sc in next sc. Rep from * across. Fasten off.
Weave in all ends.
Tips for Success
- Count your shells at the end of Row 1 — you should have exactly 16.
- The edge half-shells (Row 2): 2 dc at the start, sc in the middle of the first full shell, then continue as normal.
- Stitch markers — place one at the centre dc of each shell in the first row so you can find them easily in the next row.
- Blocking: A light wet block will open up the shells beautifully. Lay damp on a towel, pin to size, and leave to dry.
Colour Variations
This blanket adapts beautifully to stripes — change colour every 2 rows for a classic stripe effect. Try soft blush + warm cream, or mint + white for a gender-neutral nursery. When working stripes, fasten off at the end of each colour and join the new colour at the start of the next row for clean edges.
Frequently Asked Questions
Can I make this blanket bigger? Yes — add multiples of 8 to the starting chain. Each additional 8 chains adds one more shell (approximately 2 inches of width).
What if my shells look uneven? Almost always a tension issue. Keep the same pressure throughout all 5 dc of each shell, and always work them into the same stitch.
Can I use worsted weight yarn? Yes — use a 5.0 mm hook. Expect a chunkier blanket with slightly less drape, great for cooler months.
Can I sell finished blankets made from this pattern? Yes — you’re welcome to sell finished items made from Bloom Bonnet patterns in small quantities. Please credit BloomBonnet.com.
How do I wash a crochet baby blanket? Machine wash gentle / cold, reshape while damp, and lay flat to dry.
