Frankenyarn Blanket Part 4 | Free Crochet Pattern

If you’ve been following along with the Frankenyarn Blanket series, welcome back — you are in exactly the right place. And if this is your first time stumbling across this project, don’t worry. You can absolutely jump in here with Part 4, or head back to the beginning to start the full blanket from scratch. Either way, grab your hook, pull out those scraps, and let’s get into it.

The whole point of the Frankenyarn Blanket is using up the yarn you already have. Those half-skeins. The random colorways you couldn’t resist at the craft store. The acrylic you inherited from a relative who crocheted before you did. The single ball of something fancy that never became the project it was meant for. Every scrap has a home here, and Part 4 is where things really start to come together in a beautiful, chaotic, totally intentional way.

What Is the Frankenyarn Blanket?

Before we dive into the pattern, a quick refresher for anyone who needs it.

The Frankenyarn Blanket is a stash-busting crochet blanket designed to be made entirely from scraps and leftover yarn. The name comes from the idea that you’re stitching together bits and pieces from all over the place — like Frankenstein’s monster, but cozier and much more colorful. There are no strict color rules, no weight matching requirements, and very few decisions you can get “wrong.” It’s forgiving, it’s fun, and every single finished blanket looks completely different from every other one.

Parts 1 through 3 covered the foundation, the first major stitch sections, and how to handle yarn joins and tension shifts when working with mismatched weights. Part 4 builds on all of that and introduces a new stitch combination that gives the blanket its signature texture and visual depth.

What You’ll Need for Part 4

Because this is a scrappy project, there’s no single correct yarn list. However, here are some general guidelines to make Part 4 go as smoothly as possible.

Yarn: Any weight, any fiber, any color. If you’ve been working on Parts 1 through 3, keep the same yarn piles you’ve been pulling from. The more variety, the better the finished result. If you’re starting fresh or adding new scraps to your stash pile, that’s fine too. Just try to keep lengths of at least a few yards when you join a new color so you’re not changing every few stitches.

Hook Size: Use whatever hook you’ve been using for the rest of the blanket. Because the yarn weights vary, there’s no one-size-fits-all recommendation here. A good middle-ground hook for a mixed-weight scrap blanket tends to be a 5mm or 5.5mm, but go up or down as needed to get a fabric you like. It should feel soft and drape-y rather than stiff.

Stitch Markers: A few locking stitch markers will help you keep track of your stitch counts, especially when the texture stitch section is new to you.

Scissors and a Tapestry Needle: For weaving in ends, which, yes, there will be several. That’s just part of the Frankenyarn life.

Gauge

Gauge is genuinely flexible in this pattern. You’re not making a fitted garment, so as long as your blanket is growing at a rate you’re happy with and the fabric feels good in your hands, you’re doing it right. If your blanket is coming out smaller or larger than you hoped based on the previous parts, now is a good time to adjust your hook size before you go too much further.

Abbreviations Used in Part 4

Here’s a quick reference list of the abbreviations you’ll see throughout this section of the pattern.

ch — chain
sl st — slip stitch
sc — single crochet
hdc — half double crochet
dc — double crochet
fpdc — front post double crochet
bpdc — back post double crochet
sp — space
rep — repeat
RS — right side
WS — wrong side
t-ch — turning chain
sk — skip

Part 4 Overview

Part 4 introduces what I call the Texture Block Section. This is where the blanket shifts from being a patchwork of flat color into something with real dimension. The combination of front post and back post double crochets creates a ribbed, almost woven-looking texture that plays beautifully with color changes. You’ll be able to see every yarn join as an intentional design detail rather than something to hide.

This section is worked in rows across the full width of your blanket. If you’ve been increasing your blanket size throughout the earlier parts, you may have a different stitch count than the pattern lists below. Don’t panic — the stitch pattern repeat used here works over any even number of stitches, so as long as your count is even, you’re in good shape.

Part 4 Pattern Instructions

Foundation: You should be starting Part 4 with the work from Parts 1 through 3 already complete. Your blanket should be lying flat, and you’ll be joining your next color (or continuing with your current one if you have enough yardage) at the beginning of a new right-side row.

Setting Up the Texture Block Section

If you’re joining a new yarn color, do so now at the beginning of a row. Make sure your last completed row ended on a wrong side row so that your new work starts on the right side. This matters for the post stitch section because the texture reads differently depending on which side you begin.

Row 1 (RS): Join yarn, ch 2 (does not count as a stitch here), fpdc around the post of the first dc from the row below, bpdc around the next dc post, fpdc, bpdc rep across to the last stitch, dc in the turning chain or edge stitch. Turn.

Row 2 (WS): Ch 2, bpdc around the first fpdc post from the previous row, fpdc around the next bpdc post, bpdc, fpdc rep across, dc in the last stitch. Turn.

Repeat Rows 1 and 2 for the full texture block section. This is your basic ribbing pattern, and it’s deeply satisfying to work once your hands get the rhythm of alternating between front and back post stitches.

Work the Texture Block Section for 24 rows total, or until your texture section is approximately 5 to 6 inches tall, whichever comes first. If you’re using heavier yarn, 24 rows may measure more than that. Use your own blanket as your guide — you’re going for a visual balance with the sections above and below.

Color Changes Within the Texture Block Section

This is where the Frankenyarn magic really shines. Because you’re working in rows, every time you run out of a yarn or decide to switch colors, you simply join the new yarn at the beginning of the next row. You don’t need to plan any of this out in advance. Just pick up whatever scrap calls to you and keep going.

When you change colors mid-row because you’ve run out of yarn rather than reaching the end, pull up a loop of the new color at the point where you ran out, complete your stitch, and continue. Leave a 6-inch tail on both the old and new yarn for weaving in later. You’ll notice that mid-row color changes create a slightly different visual effect than end-of-row changes, with a diagonal line rather than a clean horizontal stripe. Both are beautiful, and both are completely on-brand for the Frankenyarn aesthetic.

The Split Half Double Crochet Accent Row

After you complete your 24 rows of the texture block section, you’re going to add a single accent row using the split half double crochet stitch. This creates a lovely, slightly raised line that acts as a visual border between the texture block and whatever comes next.

Accent Row: Ch 1, insert hook through the front loop of the current stitch AND the back loop of the stitch directly below it (the “split” technique), yarn over and pull up a loop, yarn over and pull through all 3 loops on hook rep across. Fasten off or continue if you have enough yarn.

This accent row works best in a contrasting or neutral color. If you have a short scrap of something that’s a different shade from what you’ve been using, this is a great place to use it up. Even a few yards is enough for a single accent row.

Moving Into the Corner Shell Section

After the accent row, you’ll begin the Corner Shell Section. This is a decorative element that adds visual interest and softens the structured look of the ribbing above it.

Row 1 (RS): Ch 3 (counts as first dc), sk first 2 sts, 5 dc in next st (shell made), sk 2 sts, sc in next st, sk 2 sts rep across, ending with sc in last st. Turn.

Row 2 (WS): Ch 3, sc in center dc of shell below, 5 dc shell in sc below rep across, ending sc in top of t-ch. Turn.

Repeat Rows 1 and 2 for 12 rows, or approximately 3 to 4 inches.

The shell stitch section doesn’t read well over an odd number of stitches, so if your stitch count doesn’t divide evenly into the 6-stitch shell repeat (5 dc + 1 sc = 6), you may need to add or subtract a stitch at the beginning of Row 1 to make things line up. Do this inside the first or last stitch rather than tacking extra chains onto the edge, and it won’t be noticeable in the finished blanket.

Tips for Part 4 Specifically

Tension control with post stitches: Post stitches naturally pull tighter than regular double crochets because you’re wrapping around the post rather than going through a loop. If you notice your blanket starting to bow inward or the fabric feels stiff, try going up half a hook size just for the texture block section.

Weaving in ends as you go: I know, I know — nobody wants to hear this. But with a Frankenyarn Blanket, the end count gets out of hand quickly if you ignore it. Weaving in ends every few rows, or at least every time you sit down and pick the project back up, makes the finishing process at the end much less daunting. Thread your tapestry needle and weave those ends in diagonally through the post stitches — the texture hides them beautifully.

Yarn dominance: When two yarns of different textures (say, a smooth acrylic and a fuzzy mohair blend) end up adjacent in the shell section, the fuzzier yarn will visually dominate even if it’s used for fewer stitches. This isn’t a problem — it’s a feature. But if you want a more balanced look, place your fluffier or bolder yarns at the center of a row rather than the edges.

Don’t be afraid of ugly: Honestly, one of the things that makes the Frankenyarn Blanket such a joy to make is that there are rows that look genuinely terrible until you add the next color. That combination that makes you wince? Add one more row in something completely different, and suddenly it works. Trust the process, keep going, and don’t rip back just because something looks off in the middle.

Progress Check

At the end of Part 4, your blanket should have the following sections completed, from bottom to top (or from your initial foundation chain outward, depending on how you’ve been building):

The foundation and early stitch work from Parts 1 and 2, the transitional sections and yarn join practice from Part 3, and now the Texture Block Section, the Split Half Double Crochet Accent Row, and the beginning of the Corner Shell Section from Part 4.

If your blanket is lying flat and looking beautiful, you’re doing everything right. If it’s curling at the edges, try blocking it gently with a wet cloth or spray bottle and letting it dry flat. Acrylic yarn responds well to steam blocking (hold the iron above the fabric, don’t press down), but check your yarn label first, especially if you’ve included any wool or specialty fibers.

What’s Coming in Part 5

Part 5 is going to cover the final major stitch section of the blanket, a simple border construction that works with whatever width and edge you’ve built up, and some notes on finishing and care depending on the fiber content you’ve used throughout. There will also be some ideas for how to adapt the blanket as a lap blanket, baby blanket, or full bed-size throw by scaling the stitch counts up or down.

If you’ve been posting your progress photos, I would genuinely love to see them. Every single Frankenyarn Blanket looks completely different, and that’s exactly the point. Tag your projects and share your color combinations — the scrap yarn crochet community is one of the most generous and creative groups of people online, and every work-in-progress photo is an inspiration to someone else who’s staring at their own yarn pile wondering where to begin.

Final Thoughts on Part 4

The Texture Block Section is the heart of the Frankenyarn Blanket. It’s where the scraps stop feeling like scraps and start feeling like a cohesive piece of textile art. The post stitch ribbing holds color changes beautifully, gives the blanket real structural weight, and creates a satisfying tactile experience that makes the finished piece feel special even when it’s made entirely from leftovers.

Part 4 is also where a lot of crafters find their stride with this project. The early parts require more decision-making — choosing how to start, getting comfortable with the philosophy of “any yarn goes.” By now, if you’ve made it to Part 4, you’ve let go of the perfectionism that makes scrappy projects feel risky. You’re just crocheting. You’re just using what you have. And it’s working.

Keep going. Part 5 is going to bring it all home.

Happy crocheting, and remember — there’s no wrong way to make a Frankenyarn Blanket. Every stitch, every color, every scrap of yarn you’ve tucked into this project is exactly where it belongs.