Seigaiha Virus C2C Blanket – Pattern with Japanese Stitch Chart

Seigaiha Virus C2C Blanket: Traditional Waves & Seamless Bias Geometry

This pattern has been thoroughly test crocheted.

The Seigaiha Virus C2C Blanket is a meditative, customizable crochet project that brings together two beloved design traditions: the symbolic Japanese wave motif (Seigaiha—representing surges of good fortune and peace) and the fluid, rhythmic cadence of the classic virus crochet stitch.

Worked on the bias from corner to corner (C2C style) seamlessly in one piece, this project eliminates the frustration of long foundation chains and upfront math. You simply start at a single corner and expand until you reach your target width. Whether you choose to shape it into a classic square or a cozy rectangle, the pattern flows effortlessly through increase, straight, and decrease sections, finished with a crisp, tailored edging.

Because the design is fully scale-free, it adapts naturally to any purpose—from a compact 33.5 cm (13.2”) basket accent to an 81.5 cm (32”) heirloom baby blanket or a 71.5 cm × 103 cm (28.1” × 40.5”) gradient lap throw. The airy fan-and-arch texture provides exceptional drape, making it an exquisite match for fingering/sock yarn, hand-dyed gradients, or tonal solids.

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Why You’ll Love This Pattern

• Stress-Free Corner-to-Corner Start: No tedious long foundation chains to count or balance! Worked seamlessly on the bias from a single point, allowing you to settle immediately into a calm, meditative rhythm.

• Effortless Square or Rectangle Freedom: Shape it your way! Simple, intuitive guidelines show you exactly when to transition between increase, straight, and decrease sections to create either a balanced square or a versatile rectangle.

• Scale-Free Customization: Adaptable to any yarn weight and dimension—easily scale your project from small kitchen/basket covers and baby blankets to generous lap throws or full-sized bedspreads.

• Hypnotic Wave Texture: The combination of open arches and rhythmic virus fan stitches evokes traditional Japanese ocean ripples, creating an airy, fluid drape that showcases solid colors, specks, and multi-color gradients with equal grace.

• Inclusive Visual Precision & Left-Handed Charts: Includes complete US written instructions, standard Japanese right-handed symbol charts, and a dedicated supplementary PDF featuring mirrored stitch charts for left-handed crocheters.

📥 Looking for the Printable PDF?

You can purchase the complete, ad-free PDF pattern (which includes the full written instructions and the printable Japanese stitch chart) on Ravelry!

✨ This pattern has been thoroughly test knitted for clarity and accuracy.

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Pattern Details & Materials

Pattern Specifications

• Yarn: Sock weight Yarn (85% Extra Fine Merino, 15% Nylon; approx. 400 m / 437 yds per 100 g skein)
• Yardage & Finished Size:
  • • Sample 1 (Rectangle Gradient Lap Blanket): 71.5 cm × 103 cm (approx. 28″ × 40.5″)
    • Total Yardage: approx. 330 g / 1,320 m (1,444 yds)
    • Color A (Natural White / Body Corner & Edging): 74 g / 296 m (324 yds)
    • Color B (Beige): 76 g / 304 m (332 yds)
    • Color C (Pale Pink): 115 g / 460 m (503 yds)
    • Color D (Deep Pink): 65 g / 260 m (284 yds)
    • Color Sequence: Color A (32 rows) → Color B (24 rows) → Color C (24 rows) → Color D (24 rows) → Color C (24 rows) → Color B (24 rows) → Color A (28 rows) → Edging (Color A)
  • • Sample 2 (Square Baby Blanket): 81.5 cm × 81.5 cm (approx. 32″ × 32″)
    • Total Yardage: approx. 303 g / 1,212 m (1,325 yds)
    • Main Color (MC – Wakana / Yellow-Green): 273 g / 1,092 m (1,194 yds)
    • Contrast Color (CC – White / Edging): 30 g / 120 m (131 yds)
  • • Sample 3 (Square Basket Cover): 33.5 cm × 33.5 cm (approx. 13.2″ × 13.2″)
    • Total Yardage: approx. 56 g / 224 m (245 yds)
    • Main Color (MC – Usofuji / Light Purple): 46 g / 184 m (201 yds)
    • Contrast Color (CC – White / Edging): 10 g / 40 m (44 yds)
• Hook: 3.0 mm (JP 5/0 crochet hook)
• Gauge: 28 sts and 8 rows = 10 cm (4″) in pattern stitch (after blocking)

Skills Required / Techniques:

• Basic crochet stitches: ch, dc, sc-blo, dc-blo
• Working flat

What’s Included in the PDF?

• Full row-by-row written instructions (US terminology)

• High-resolution, printable Japanese Symbol Stitch Chart (編み図)

• Stitch symbol conversion & reference chart (English abbreviations to Japanese symbols)

• Features dedicated, horizontally mirrored stitch charts so left-handed crocheters can follow the diagrams with total ease.

• Total: 9 pages, clean & ad-free layout optimized for printing or tablet use

Ready to crochet the Sasa Pointed Shawl?

Download your printable PDF on Ravelry and cast on today!

✨ This pattern has been thoroughly test knitted for clarity and accuracy.

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