With its super fun no-sew construction and its boundless color-play potential, our Prism Blanket is a totally absorbing knit!

Prism Blanket | Purl Soho

The building block of this blanket is a bias-knit square made with simple increases, then decreases, plus lots of relaxing knit stitches in between.

Prism Blanket | Purl Soho

A color change halfway through each square creates kaleidoscopic triangles that tumble across the surface of the blanket… An artistic process (which color next?) that results in a work of real craftsmanship. 

Prism Blanket | Purl Soho

The clever bit is how you attach each new square to its neighbor by picking up stitches as you knit. This means no interruptions and no pile of squares to deal with at the end! Don’t worry, picking up is easy to do, and we have a step-by-step tutorial that makes it even easier.

Prism Blanket | Purl Soho

The satisfaction of this pattern is enriched by our absolutely gorgeous Good Wool. One hundred percent Andean highland wool, this natural beauty is durable, warm, and softer than you may expect! This yarn is one of our favorites to knit, and creates a garter fabric with a lofty bounce!

Prism Blanket | Purl Soho

Good Wool’s heathered spectrum always sparks our imagination, and with almost forty colors, there’s lots of room to play!

Prism Blanket | Purl Soho

We’ve put together ten lovely Prism Blanket Bundles that come in both crib and throw sizes, or you can get extra creative, and make your own!

Prism Blanket | Purl Soho

Good Wool comes in an affordable 383-yard skein, so pick up a Prism Blanket Bundle or your own palette of skeins, and cast on for the kind of knit you can’t put down… Just one more color! Wait, let me just start the next square! Sorry, I can’t go out today, I’m knitting!

Prism Blanket | Purl Soho

UPDATE: NOW A STAFF PICK

FEBRUARY 2024

Prism Blanket | Purl Soho


We love knitting our Prism Blanket for the same reasons you’ll love it, making it our very first Staff Pick! Meet some of the team…

Jess C., our Senior Fulfillment Specialist + Outreach Assistant, knit a Prism Blanket (above, top) that uses Good Wool’s beautiful range of blues to flicker through all the denim washes… Beautiful! Our longtime Shipping Manager, Anna V., knit a version (middle row, left) that rearranged the color placement into an ode to traditional quilt-making. So clever! Jennifer H.-J., co-owner of Purl Soho, is wrapped up like a spring bouquet in her version (middle row, right). She reports that her favorite thing about knitting the Prism Blanket was how “easy it was without being boring.” The sweet spot! And Margaret H., our Social Media + Outreach Coordinator, displays the first two columns of her blanket, a promising start to her autumnal interpretation! Get in on the action by entering your email into the box above and downloading our Prism Blanket pattern for free!

Yarn lovers, if you adore the yarn used in this project, you’ll love exploring all of our other yarn collections! Discover over 45 thoughtfully designed yarns in nearly every natural fiber and in every spectacular color you can imagine. Only available here at Purl Soho’s online yarn store, where every skein is created with care and your creativity in mind!

Prism Blanket | Purl Soho

Designed for Purl Soho by Joelle Hoverson and Gaby Bush.

Share your progress and connect with the community by tagging your pics with #PurlSoho, #PurlSohoBusyHands, #PurlSohoPrismBlanket, and #PurlSohoGoodWool. We can’t wait to see what you make!

Materials

Prism Blanket | Purl Soho

Our Prism Blanket Bundle comes in Crib (Throw) sizes and includes…

  • 7 (10) skeins of Purl Soho’s Good Wool, 100% Andean highland wool yarn. Each skein of this sport weight yarn is 383 yards/ 100 grams.
    • MC1: 2 skeins; approximately 435 (725) yards required
    • MC2: 2 skeins; approximately 435 (725) yards required
    • CC1: 1 (2) skein(s); approximately 290 (510) yards required
    • CC2: 1 (2) skein(s); approximately 290 (510) yards required
    • CC3: 1 (2) skein(s); approximately 290 (435) yards required

You’ll also need…

PALETTES

Choose from 10 beautiful palettes, each one shown above! We used Campfire for the Throw size, and Birthday, Tuber, and Rosebush for our Crib samples.

NOTE, March 2023: We have since added 4 more palettes to this Bundle! Visit our Prism Blanket Bundle page to see all 14 palettes!

Top Row

BIRTHDAY- MC1: Vintage Rose; MC2: Pink Dawn; CC1: Seaside Blue; CC2: Desert Blue; CC3: Pale Patina

CAMPFIRE- MC1: Freshwater Blue; MC2: Periwinkle Gray; CC1: Apple Cider; CC2: Barn Door; CC3: Guava Earth

Second Row

TUBER- MC1: Hickory Nut; MC2: Walking Stick; CC1: Wild Heath; CC2: Wild Violet; CC3: Fresh Loganberry

ROSEBUSH- MC1: Magnolia Pink; MC2: Pink Salt; CC1: Olive Oil; CC2: Fern Green; CC3: Tree Frog

Third Row

TEACAKE- MC1: Winter Grassy; MC2: Heirloom White; CC1: Lemon Meringue; CC2: Pink Salt; CC3: Magnolia Pink

GRASSHOPPER- MC1: Winter Grass; MC2: Heirloom White; CC1: Tree Frog; CC2: Fern Green; CC3: Olive Oil

Fourth Row

AMETHYST- MC1: Winter Grass; MC2: Heirloom White; CC1: Wild Heath; CC2: Purple Pansy; CC3: Periwinkle Gray

WHITE CAPS- MC1: Winter Grass; MC2: Heirloom White; CC1: Desert Blue; CC2: Seaside Blue; CC3: Freshwater Blue

Bottom Row

CANDLELIGHT- MC1: Violet Night; MC2: Purple Pansy; CC1: Wild Mustard; CC2: Hay Field; CC3: Lemon Meringue

SPRUCE- MC1: Teal Twilight; MC2: Dark Spruce; CC1: Driftwood Gray; CC2: Winter Grass; CC3: Heirloom White

PLEASE NOTE: In order to keep the beautiful Grasshopper, Amethyst, Teacake, and White Caps bundles available, we previously replaced the MC1, Winter Grass, with Driftwood Gray. We’ve since been able to restock Winter Grass and have returned to using it in these palettes! These photos are accurate.

GAUGE

22 stitches and 44 rows (22 ridges) = 4 inches in garter stitch

SIZES

Crib (Throw)

Finished Dimensions: 33 inches wide x 44 inches long (44 inches wide x 55 inches long)

Finished Square Dimensions: 11 inches square

SAMPLES: Our Crib size samples use the Birthday, Rosebush, and Tuber bundles, and our Throw size sample uses the Campfire bundle.

NOTES

CONSTRUCTION

You will work this blanket in one piece, beginning with the bottom left square. You will work in columns, one bias-knit square at a time. When necessary, you will pick up stitches from an adjacent square (or two!) in order to continue seamlessly. Don’t worry, it’s easy and we explain everything!

PLANNING CUSTOM COLORS

If you want to design your own color story, be sure to check out this handy coloring worksheet!

STITCH MULTIPLE

This pattern is worked over an odd number of stitches.

SPECIAL INSTRUCTIONS

K1 TBL (KNIT 1 THROUGH THE BACK LOOP)

In this pattern, every time you knit through the back loop, it will be into a yarn over from the previous row. To do it, just insert the right needle into the back leg of the yarn over and knit as usual.

For more help with this technique, visit our tutorial at purlsoho.com/create/knit-through-the-back-loop-k-tbl/

SLIP STITCHES

Slip all slipped stitches purlwise unless otherwise specified.

PICKING UP STITCHES

For the cleanest pick-up edge, insert the needle into the outer most bump of the garter ridge edge.

Visit purlsoho.com/create/picking-up-stitches and scroll down to the “Along A Vertical Edge: Garter Stitch, Into the Ridge” section to see exactly how to pick up stitches for this project.

SCHEMATIC

Key

Prism Blanket | Purl Soho

Schematic

NOTE: The instructions for Squares A, B, C and D are slightly different. The pattern explains them all!

You will start at the bottom left corner and work your way up the left-hand column to the top left corner. You will then work each subsequent column from the bottom to the top, joining to its neighboring column as you go!

Prism Blanket | Purl Soho

Want to see it bigger? Download this Schematic as a PDF!

PATTERN

COLUMN 1

SQUARE A

INCREASE

Using a Long Tail Cast On and CC1, cast on 3 stitches.

Set-Up Row (wrong side): Knit to end of row.

Row 1 (right side): K1, yarn over (yo), knit to last stitch, yo, k1. [2 stitches increased]

Row 2 (wrong side): K1, k1 through back loop (tbl; see Notes), knit to last 2 stitches, k1tbl, k1.

Repeat Rows 1 and 2 forty more times, ending with Row 2. [85 stitches; piece measures approximately 11 inches along selvage]

Cut CC1.

DECREASE

With right side facing you, join MC1.

Rows 1-3: Knit to end of row.

Row 4 (wrong side): K1, slip slip knit (ssk), knit to last 3 stitches, knit 2 together (k2tog), k1. [2 stitches decreased]

Row 5 (right side): Knit to end of row.

Repeat Rows 4 and 5 until 5 stitches remain, ending with Row 5.

Next Row (wrong side): Ssk, k1, k2tog. [3 stitches remain]

Next Row (right side): Slip 1 knitwise, k2tog, pass slipped stitch over (psso). [1 stitch remains]

Cut MC1 and pull through remaining stitch.

SQUARE B

NOTE: To see Square B in action, check out our tutorial at purlsoho.com/create/join-as-you-knit

INCREASE

Using a Long Tail Cast On and CC2, cast on 3 stitches.

With Square A oriented so right side is facing you and cast on point is at bottom right corner…

Row 1 (right side): Knit to last stitch of Square B, slip last stitch, pick up and knit 1 stitch (see Notes) from last CC garter ridge at top right corner of Square A, psso to join Square B to Square A, turn work.

Row 2 (wrong side): Knit to end of row.

Row 3 (right side): K1, yo, k1, yo, slip last stitch, pick up and knit 1 stitch from first MC garter ridge at top right corner of Square A, psso to join Square B to Square A, turn work. [5 stitches]

Row 4 (wrong side): K1, k1 tbl, knit to last 2 stitches, k1 tbl, k1.

Row 5 (right side): K1, yo, knit to last stitch, yo, slip last stitch, pick up and knit 1 stitch from next MC garter ridge of Square A, psso to join Square B to Square A, turn work. [2 stitches increased]

Repeat Rows 4 and 5 until 1 garter ridge remains from Square A.

Repeat Row 4 one more time. [85 stitches]

Cut CC2.

DECREASE

With right side facing you, join MC1.

Row 1 (right side): Knit to last stitch, slip last stitch, pick up and knit 1 stitch from last MC1 garter ridge of Square A, psso, turn work.

Rows 2 and 3: Knit to end of row.

Row 4 (wrong side): K1, ssk, knit to last 3 stitches, k2tog, k1. [2 stitches decreased]

Row 5 (right side): Knit to end of row.

Repeat Rows 4 and 5 until 5 stitches remain, ending with Row 5.

Next Row (wrong side): Ssk, k1, k2tog. [3 stitches remain]

Next Row (right side): Slip 1 knitwise, k2tog, psso. [1 stitch remains]

Cut MC1 and pull through remaining stitch.

CONTINUE

Using the same logic as Square B and referring to the Schematic (see Notes) for color placement, continue to work and attach squares until you have 4 (5) total squares in Column 1.

COLUMN 2

SQUARE C

INCREASE

With CC2, work Increase section of Square A.

DECREASE

With right side facing you, join MC2.

Row 1 (right side): Knit to last stitch, slip last stitch, pick up and knit 1 stitch from cast-on point of Square A, psso to join Square C to Square A, turn work.

Row 2 (wrong side): Knit to end of row.

Row 3: Knit to last stitch, slip last stitch, pick up and knit 1 stitch from next garter ridge of Square A, psso, turn work.

Row 4: K1, ssk, knit to last 3 stitches, k2tog, k1. [2 stitches decreased]

Repeat Rows 3 and 4 until 5 stitches remain, then repeat Row 3 one more time.

Next Row (wrong side): Ssk, k1, k2tog. [3 stitches remain]

Next Row (right side): Ssk, slip 1, pick up and knit 1 stitch from last CC garter ridge of Square A, pass previous 2 stitches over. [1 stitch remains]

Cut MC2 and draw through remaining stitch.

SQUARE D

INCREASE

With CC1 and right side facing you, begin at top right corner of Square C and work Increase section of Square B.

DECREASE

With right side facing you, join MC1.

Row 1 (right side): Knit to last stitch, slip last stitch, pick up and knit 1 stitch from last MC garter ridge of Square C, psso to join Square D to Square C, turn work.

Row 2 (wrong side): Knit to end of row.

Row 3: Knit to last stitch, slip last stitch, pick up and knit 1 stitch from first garter ridge of Square B, psso, turn work.

Row 4: K1, ssk, knit to last 3 stitches, k2tog, k1. [2 stitches decreased]

Row 5: Knit to last stitch, slip last stitch, pick up and knit 1 stitch from next garter ridge of Square B, psso, turn work.

Repeat Rows 4 and 5 until 5 stitches remain, ending with Row 5.

Next Row (wrong side): Ssk, k1, k2tog. [3 stitches remain]

Next Row (right side): Ssk, slip 1, pick up and knit 1 stitch from last CC garter ridge of Square B, pass previous 2 stitches over. [1 stitch remain]

Cut MC1 and draw through remaining stitch.

CONTINUE

Using the same logic as Square D and referring to the Schematic for color placement, continue to work and attach the remaining squares until you have 4 (5) squares total in Column 2.

WORK REMAINING COLUMNS

Referring to the Schematic for color placement, work as for Column 2 one (2) more time(s), until you have 3 (4) total Columns.

FINISHING

Weave in ends, closing holes between squares with tails or scrap yarn. Wet block to finished dimensions and enjoy!

Prism Blanket | Purl Soho
Prism Blanket | Purl Soho

LEARN ABOUT GOOD WOOL + ALL OUR BEAUTIFUL YARNS

Good Wool adds loads of character, beauty, and integrity to this knit! A sport-weight yarn whose lofty 2-ply spin can also bloom into a light worsted/DK-weight yarn, Good Wool is made from 100% Andean highland wool, a toothy fiber with a deeply natural appeal. This yarn has a spectacular palette of complex and subtly varied colors, including 5 undyed shades. Very close to the hearts of our customers, Good Wool is a true knitter’s yarn!

More Free Knitting Patterns

More Sport-Weight Yarns + Light Worsted/DK-Weight Yarns

More Yarns With Similar Fiber

Looking for more inspiration? Explore all of our free knitting patterns and knitting tutorials, buy one of our many knitting kits and yarn bundles, and shop for beautiful yarn. We have over 35 gorgeous natural fiber yarns in 100’s of magnificent colors, designed to bring integrity, beauty, and joy to your next knitting project and only available at Purl Soho!