How to Crochet an Oversized Argyle Cardigan: Free Pattern & Step-by-Step Guide

Learn how to crochet a vintage-inspired oversized argyle button-up cardigan. Includes yarn yardage, sizing chart, intarsia colorwork tips, and finishing steps.

The classic argyle pattern is a wardrobe staple that never goes out of style. While traditionally reserved for machine knits and golf vests, this oversized crochet cardigan translates the geometric diamond look into cozy, textured crochet fabric.

With its drop-shoulder silhouette, puffed balloon sleeves, chunky button band, and soft brushed yarn, this piece is both modern and nostalgic. This complete guide walks through everything you need to create your own, from managing color bobbins to clean seaming and buttonhole placement.

Pattern Overview & Sizing

This pattern is written for a relaxed, oversized fit. To check your fit, measure around the fullest part of your bust and choose the size with roughly 4 to 8 inches (10–20 cm) of positive ease.

Size	Finished Bust Circumference	Total Length	Fit Recommendation
S/M	44 in (112 cm)	21 in (53 cm)	Fits busts 32–38 in (Oversized)
L/XL	52 in (132 cm)	23 in (58 cm)	Fits busts 40–46 in (Oversized)
2XL/3XL	60 in (152 cm)	24 in (61 cm)	Fits busts 48–54 in (Oversized)

Materials & Tools

Yarn: Bulky weight (Category 5) or two strands of DK/worsted brushed alpaca or mohair-blend yarn held together.

• Main Color (Cream / Off-White): ~850 yards (780 m)
• Contrast Color (Dusty Blue): ~420 yards (380 m)

Crochet Hooks:

• 6.0 mm (US J/10): Used for the main body panels and intarsia colorwork.
• 5.0 mm (US H/8): Used for all ribbed cuffs, hem bands, collar, and button bands.

Notions:

• 5 natural wooden buttons (approx. 25 mm / 1 in diameter)
• Tapestry needle for seaming and weaving in ends
• Locking stitch markers
• Fabric scissors and tape measure

Gauge & Stitch Terminology

Gauge: 12 stitches × 10 rows in single crochet using the 6.0 mm hook = 4 × 4 inches (10 × 10 cm). Always make a test swatch before beginning to ensure accurate finished measurements.

Abbreviations (US Terms):

• ch: Chain
• st(s): Stitch(es)
• sc: Single crochet
• sc BLO: Single crochet in the Back Loop Only (creates elastic ribbing)
• sl st: Slip stitch
• sc2tog: Single crochet decrease across two stitches

Colorwork Technique: Intarsia vs. Fair Isle

Argyle diamonds require crisp, flat color transitions.

• Do not carry floats behind your work: Carrying thick, contrasting yarn across wide sections produces a stiff, dense fabric with poor drape.
• Use bobbins: Wind separate small balls or spools of yarn for each individual blue diamond and cream background section.
• The Seamless Color Change: On the last stitch before a color switch, insert hook, yarn over with your current color, and pull up a loop. Complete the final yarn-over with the new color and pull through both loops.
• Lock the yarn: Twist the old strand over the new strand on the wrong side of your work at every color change to seal any gaps.

Step-by-Step Instructions

Step 1: Ribbed Cuffs and Hem

All ribbed bands are worked flat in rows using the smaller 5.0 mm hook and Cream yarn:

1. Foundation: Chain 13 sts.
2. Row 1: Work 1 sc in the 2nd chain from hook and in each st across. Turn (12 sts).
3. Row 2: Ch 1, work 1 sc in the Back Loop Only (sc BLO) across. Turn (12 sts).
4. Repeat Row 2 until your ribbed strip reaches your panel width:
   • Back Ribbing: ~90 rows.
   • Front Left / Right Ribbing: ~44 rows each.
   • Sleeve Cuffs: ~32 rows each (join into a circle with slip stitches).

Step 2: Working the Argyle Body Panels

Switch to the 6.0 mm hook and work into the long edge of your ribbed foundation bands:

Back Panel

1. Foundation Row: Evenly work 73 sc across the top of your back ribbing.
2. Body Rows: Work in single crochet following the 18-stitch diamond repeat (4 full diamonds wide).
3. Continue straight in pattern until the piece measures 20 inches (51 cm) from the bottom edge. Fasten off, leaving the center 25 stitches open for the neck.

Front Panels (Make 2)

1. Foundation Row: Evenly work 37 sc across the top of your front ribbing strip.
2. Body Rows: Work 2 full diamond repeats (36 sts + 1 edge st) straight until the panel reaches 17 inches (43 cm).
3. Neckline Shaping: At the inner front edge, slip stitch across the first 6 stitches, then decrease by working sc2tog at the neck edge on every subsequent row until 24 shoulder stitches remain.
4. Continue straight until the front panel length matches the back panel. Fasten off.

Step 3: Puffed Balloon Sleeves (Make 2)

1. Using the joined cuff ribbing, switch to the 6.0 mm hook.
2. Increase Round: Work 2 sc into the side of every rib row around the cuff edge (approx. 64 stitches total). This rapid increase creates the gathered balloon silhouette.
3. Work diamond repeats in turned rounds or flat rows for 17 inches (43 cm). Fasten off with a long tail.

Step 4: Adding the Embroidered Argyle Lines

The signature crisscross lines that intersect the diamonds are added before sewing your panels together:

1. Lay your crocheted panels completely flat on a table.
2. Thread a blunt tapestry needle with a strand of Contrast Color (Blue), or use a 5.0 mm hook to work surface slip stitches.
3. Trace straight diagonal paths connecting the diamond points from hem to shoulder. Keep your tension relaxed so the embroidery does not pucker the crochet fabric.

Step 5: Assembly & Buttonhole Bands

1. Shoulder Seams: Lay front panels on top of the back panel (right sides facing). Join shoulder seams using slip stitches or a tapestry needle.
2. Attach Sleeves: Center the sleeve crown on the shoulder seam, pin in place, and seam across.
3. Side Seams: Fold cardigan and seam continuously from the wrist cuffs down to the bottom hem.
4. Buttonhole Band (Left Edge):
   • Using the 5.0 mm hook, pick up single crochets evenly down the front opening.
   • Work 5 rows of sc BLO ribbing. On row 3, create 5 evenly spaced buttonholes by chaining 2 and skipping 2 stitches.
5. Button Band (Right Edge): Work an identical 5-row ribbing band without buttonholes.
6. Collar: Pick up single crochets evenly around the entire neckline curve and work 8 rows of sc BLO collar ribbing.

Finishing & Garment Care

1. Sew on Buttons: Fasten five 25 mm wooden buttons on the right band directly opposite your buttonholes.
2. Weave Ends: Secure all yarn tails with a blunt needle on the wrong side of the garment.
3. Steam Blocking: Pin your completed cardigan flat and gently steam it from 2 inches away using an iron or garment steamer. Allow it to cool and dry completely to open up the stitches and sharpen the diamond geometry.
4. Washing: Hand wash cold with gentle wool wash and lay flat on a clean towel to dry. Never hang a heavy crochet cardigan on a hanger, as it will stretch out of shape.