Boho Crochet Cardigan Pattern PDF | Granny Square Lace Bolero, Bell Sleeve Cover Up Tutorial

There is something quietly magical about a handmade garment. When you pull on a crochet cardigan that you created stitch by stitch, you are wearing something that carries your intention, your time, and your creativity in every fiber. And when that cardigan happens to be a flowing, lace-detailed, bell-sleeved bohemian masterpiece? Well, that is the kind of piece that stops people in their tracks and earns you the best compliment a crafter can receive: “Wait, you made that yourself?”

This post is your complete guide to the Boho Crochet Cardigan Pattern — a granny square lace bolero with bell sleeves that works beautifully as a beach cover up, a festival layer, a breezy summer evening wrap, or simply the most charming thing you own. Whether you are a seasoned crocheter looking for your next wearable project or an intermediate maker ready to step into garment construction, this pattern is designed to be approachable, detailed, and deeply satisfying to complete.

Let’s talk about everything you need to know before you begin, from materials and sizing to construction notes, finishing tips, and styling ideas.

Why the Boho Cardigan Is a Timeless Crochet Project

The bohemian aesthetic has never really gone out of style, and for good reason. It celebrates natural textures, flowing silhouettes, handcrafted details, and a sense of effortless beauty that complements almost every body type. A crochet cardigan sits right at the heart of that aesthetic. The open lace structure created by granny squares lets light filter through in the most beautiful way, creating a garment that feels airy and lightweight even when it’s technically a full-length or three-quarter-length outer layer.

Bell sleeves in particular add a distinctly romantic quality to any crochet piece. That gradual flare from the elbow or wrist creates movement when you walk and gives the cardigan a poetic, almost theatrical silhouette. Paired with granny square construction and a lace bolero finish at the hem or neckline, this pattern brings together several beloved crochet traditions into one cohesive and wearable design.

Beyond aesthetics, there is a deeply practical reason to love this project: granny square garments are incredibly versatile to size. Because the garment is built from individual motifs that are joined together, you have a natural amount of flexibility when it comes to adjusting the fit. You are not endlessly counting rows on a complex shaping chart. Instead, you are working with modular pieces that can be arranged and rearranged until the fit suits you perfectly.

Materials You Will Need

Before diving into the pattern steps, let’s make sure you are fully equipped. Having everything gathered before you sit down to crochet makes the whole experience more enjoyable and helps you avoid the frustration of stopping mid-row to hunt for a supply.

Yarn: This pattern works best with a lightweight to medium weight yarn. A DK weight or light worsted cotton or cotton-blend yarn is ideal for the classic boho look. Cotton gives the garment beautiful drape and breathability, making it perfect for warmer seasons. If you want a softer, cozier version for layering in cooler months, a light merino or bamboo blend adds warmth without the bulk. For a standard adult size, plan on approximately 800 to 1,200 yards depending on your size and gauge.

Hook: A 4.0mm to 5.0mm crochet hook works well for most DK to light worsted weight yarn. Always check your gauge before beginning and adjust your hook size accordingly. The lace sections of this pattern look their best when worked at a slightly looser tension, so do not be afraid to size up one hook if your squares feel stiff.

Additional supplies: Yarn needle for weaving in ends and joining motifs, scissors, stitch markers (at least 6 to 8), measuring tape, and blocking mats with rust-proof pins for finishing. Blocking is not optional for this pattern — it is what transforms your finished cardigan from a collection of joined squares into a beautifully draping, professional-looking garment.

Sizing and Measurements

This pattern is written to be adaptable across a range of sizes. The base measurements you will be working from are your bust circumference, your desired garment length, and your arm length from the shoulder to your preferred sleeve end point.

For a bolero-length version, the garment typically ends just below the bust or at the natural waist. For a longer cardigan or cover-up style, you will simply add additional rows of squares or an extended lace border at the hem. The instructions below include guidance for both lengths.

Standard sizing notes for reference (measure yourself and adjust accordingly):

For a fitted bolero that sits at the natural waist, you will need a garment width of approximately your full bust measurement plus 2 to 4 inches of ease, and a length of 14 to 17 inches from the shoulder seam. For a full cover-up cardigan reaching the hip or thigh, aim for a length of 24 to 30 inches. Bell sleeves typically taper from the upper arm down to a flared hem that measures about 12 to 16 inches in circumference at the widest point.

Because granny square garments are modular, sizing adjustments are made by changing the number of squares in your layout rather than by working complex row-by-row shaping. This makes the pattern very friendly for beginners who want to attempt garment construction for the first time.

Understanding the Construction Method

This cardigan is constructed using a join-as-you-go method, which means you are connecting your granny squares to each other while crocheting the final round of each new square. This eliminates the need for a separate seaming step and gives the finished garment clean, flat joins that are nearly invisible on the right side of the work.

The body of the cardigan is made first as a flat panel. You will work a rectangular arrangement of squares that, when folded and joined at the shoulder seams, creates the basic garment shape. Armhole openings are left naturally by the arrangement of squares rather than by cutting or binding off, which keeps the edge clean and ready for sleeve attachment.

Once the body is complete and the shoulder seams are joined, the sleeves are worked from the top down, picking up stitches or joining squares around the armhole opening. This top-down construction on the sleeves means you can easily adjust the sleeve length before adding the bell cuff, and you have a natural opportunity to try the garment on mid-process to check the fit.

The lace bolero finish at the front edges and hem is added last, worked as a border of chain spaces, double crochets, and picots that creates that signature airy, romantic look.

The Basic Granny Square (Foundation Motif)

Every square in this pattern is a variation of the classic granny square, modified slightly to create a lacier, more open appearance than the traditional solid-filled version.

Round 1: Make a magic ring (or chain 4 and join with a slip stitch to form a ring). Chain 3 (counts as first double crochet), work 2 double crochets into the ring, chain 2, [3 double crochets into the ring, chain 2] three more times. Join with a slip stitch to the top of the beginning chain 3. You now have four clusters of 3 double crochets with chain 2 corner spaces between them.

Round 2: Slip stitch into the corner space, chain 3, work 2 more double crochets into the same corner space, chain 2, work 3 double crochets into the same corner space (this creates your first corner shell). Chain 1. [Work a corner shell of (3 dc, ch 2, 3 dc) into the next corner space, chain 1] three more times. Join to the top of the beginning chain 3.

Round 3: Slip stitch to the corner space, work a corner shell into the corner, chain 1, work 3 double crochets into the chain 1 space along the side, chain 1, [corner shell into the corner space, chain 1, 3 dc into the side chain 1 space, chain 1] three more times. Join to the beginning chain 3.

Round 4 (lace round): Slip stitch to the corner space, chain 5 (counts as dc + ch 2), dc into the same space, chain 2, [dc into the center of the first side cluster, chain 2, (dc, ch 2, dc) into the corner space, chain 2] repeat around. Join.

This lace round is what distinguishes this granny square from the classic version and gives the finished garment its distinctive open, delicate appearance. Each square measures approximately 4 inches by 4 inches after blocking, though your gauge swatch will confirm your exact measurements.

Working the Cardigan Body

Lay your squares out flat to plan your arrangement before joining. For a standard medium bolero, a layout of 4 squares wide by 3 squares tall on each side (front panels) and 4 squares wide by 3 squares tall for the back panel gives you the basic proportions you need. The shoulder connection happens across the top row of squares.

For a longer cover-up cardigan, extend the front and back panels to 4 or 5 rows of squares in length. Always lay out your squares and measure them against your body before committing to joins — this is the single most useful step you can take to ensure a good fit.

Join the back panel first, working from the center outward and connecting squares using the join-as-you-go method on Round 4. Once the back panel is complete, join the front left and front right panels separately, then connect the shoulder seams by joining the top row of the back panel to the corresponding top rows of each front panel, leaving the center front open (this is the cardigan’s open front) and leaving the appropriate armhole openings unsewn at each side.

Take the time here to try the body on before proceeding. Drape it over your shoulders, check that the shoulder seams sit in the right place, and confirm that the armhole openings feel comfortable. Make any necessary adjustments now — it is much easier to add or remove a square at this stage than after the sleeves are attached.

The Bell Sleeves

The sleeves begin at the armhole opening and are worked downward toward the cuff. You can choose to continue the granny square motif for the upper sleeve and transition to rows for the bell flare, or you can work the entire sleeve in a single continuous lace stitch pattern for a more fluid, seamless look.

For the granny square sleeve option, join two rows of squares around the armhole opening in the same join-as-you-go method used for the body. Then, from the bottom edge of the last row of squares, pick up and work in rows or rounds to create the bell flare.

For the bell flare: working in joined rounds from the lower sleeve edge, increase evenly by working 2 double crochets into every third stitch for the first bell round. Continue working straight for 2 rounds, then increase again in the same proportion. Repeat this increase-then-straight sequence until your bell cuff measures the desired width. Finish with the same lace border used on the cardigan hem for a cohesive, polished look.

The finished bell sleeve should fan out gracefully from the elbow area, and the lace border at the cuff should mirror the border at the hem and front edges.

Adding the Lace Bolero Border

The border is what ties the entire garment together visually. It runs along both front edges (from hem to neckline on each side), across the back neck, and along the entire bottom hem.

Work the border as follows: join yarn at the lower right corner of the right front panel. Chain 4, skip 1 stitch, dc in the next, [chain 2, skip 1, dc in the next] across the entire front edge, working 3 dc in a chain 2 corner space at each corner turn. Continue without breaking yarn all the way around the neckline and down the left front edge.

For the picot finish: on the return pass, work a slip stitch into each dc and a [slip stitch, chain 3, slip stitch] picot into each chain 2 space. This creates a delicate, scalloped edge that gives the cardigan its signature boho lace quality.

Repeat this border treatment along the entire hem edge for a unified finish.

Blocking and Finishing

Blocking is the step that elevates this cardigan from a handmade craft project to a polished, wearable garment. Wet blocking is the most effective method for cotton and cotton-blend yarns. Submerge the finished cardigan in cool water, gently squeeze out excess moisture (do not wring), then lay flat on your blocking mats and pin each square into its correct shape, opening up the lace sections and making sure all edges lie straight.

Leave the cardigan to dry completely — this can take 24 to 48 hours depending on your climate. When the pins come out, the difference will be remarkable. The lace spaces will be open and even, the squares will lie flat, and the garment will have a beautiful, professional drape.

Weave in all ends securely before blocking so that the wet process helps set the ends in place.

Styling Your Boho Crochet Cardigan

Once your cardigan is finished and blocked, the styling possibilities are genuinely endless. Wear it over a simple camisole and high-waisted linen trousers for an effortlessly chic everyday look. Layer it over a bikini or swimsuit as the most beautiful beach cover-up you have ever owned. Style it with a flowy maxi skirt and sandals for a festival or outdoor event. In cooler months, it works beautifully over a fitted long-sleeve tee with wide-leg jeans.

The open-front design means it works as more of a layering piece than a structured coat, which is part of its charm. It moves with you, catches the breeze, and adds visual texture and dimension to any outfit without adding weight or restriction.

Downloading the Full Pattern PDF

The complete pattern PDF includes full written instructions for all sizes from XS through 3XL, detailed stitch diagrams for the granny square motif and lace border, a square layout chart for every size, sleeve construction diagrams, and step-by-step photos of the join-as-you-go technique and bell sleeve shaping.

The PDF is formatted for easy printing or digital reference, and includes a full materials list, gauge information, and a helpful FAQ section covering common questions about fit adjustments and yarn substitutions.

Whether you are making this cardigan for yourself, as a gift, or as a piece to sell, this pattern gives you everything you need to create a finished garment you will be genuinely proud of. Crochet has always been one of the most generous crafts — generous in what it allows you to make, in the community it builds, and in the quiet, steady satisfaction of working something beautiful into existence one stitch at a time. This cardigan is a wonderful reminder of all of that.