Baby Blanket Knitting Patterns

Seafoam Drift Baby Blanket Free Pattern – Knit a Wavy Ocean-Inspired Heirloom

Anonymous August 08, 2026

Seafoam Drift Baby Blanket: A Wavy Ocean-Inspired Heirloom

Wrap your little one in the gentle rhythm of the sea with this mesmerizing knit blanket featuring a unique wavy cable-and-lace texture. The soft gradient of seafoam greens and creamy whites creates a calming, modern heirloom piece that will be treasured for generations. This pattern is perfect for intermediate knitters looking to expand their skills with cables and lace, while still being accessible enough for confident beginners ready for a rewarding challenge.

The Seafoam Drift blanket combines the timeless elegance of cable knitting with the airy delicacy of lace eyelets, resulting in a textured masterpiece that mimics the ebb and flow of ocean waves. The strategic color changes every six rows create a subtle, soothing gradient that transitions seamlessly from seafoam to soft white to misty teal, evoking the peaceful movement of water along a shoreline.

Materials Needed

Before you begin your knitting journey, gather the following materials to ensure a smooth and enjoyable crafting experience:

Yarn

  • Worsted weight cotton blend yarn (e.g., Lion Brand Coboo) in 3 colors:
    • Color A (Seafoam): Approximately 200g
    • Color B (Soft White): Approximately 200g
    • Color C (Misty Teal): Approximately 200g
  • Total yarn needed: approximately 600g

Needles

  • US 7 (4.5 mm) circular knitting needles with a 32-inch cable to accommodate the large number of stitches comfortably

Additional Tools

  • Cable needle (for C4B and C4F maneuvers)
  • Stitch markers (optional, but helpful for tracking pattern repeats)
  • Tapestry needle for weaving in ends
  • Blocking mats and pins for finishing

Gauge

  • 20 stitches and 28 rows = 4 inches in stockinette stitch (after blocking)

Note: Always knit a gauge swatch before starting to ensure your finished blanket matches the intended dimensions of 30 x 36 inches.

Step-by-Step Instructions

This comprehensive pattern will guide you through creating your Seafoam Drift Baby Blanket from cast-on to final blocking. Follow each step carefully, and you'll be rewarded with a stunning, heirloom-quality piece.

Finished Size

30 x 36 inches (after blocking)

Abbreviations

  • CO: cast on
  • K: knit
  • P: purl
  • Yo: yarn over
  • K2tog: knit two together (right-leaning decrease)
  • SSK: slip, slip, knit (left-leaning decrease)
  • C4B: cable 4 back (slip 2 stitches to cable needle, hold in back, knit next 2 stitches, then knit the 2 from cable needle)
  • C4F: cable 4 front (slip 2 stitches to cable needle, hold in front, knit next 2 stitches, then knit the 2 from cable needle)
  • Rep: repeat
  • RS: right side
  • WS: wrong side

Pattern Notes

  • The blanket is worked flat in one piece. Use a circular needle to accommodate the large number of stitches.
  • The pattern features a repeating 12-row design that combines a wavy cable motif with a delicate lace eyelet border.
  • Change colors every 6 rows to create a subtle gradient effect: A, B, C, B, A, repeat.
  • The border rows create a smooth, garter-like edge that frames the textured center beautifully.

Cast On

With Color A (Seafoam), CO 150 stitches using your preferred method (long-tail cast-on works well for this project).

Border (Rows 1-6)

Work the following 6 rows to create the bottom border:

  • Row 1 (RS): K all stitches.
  • Row 2 (WS): P all stitches.
  • Row 3: K all stitches.
  • Row 4: P all stitches.
  • Row 5: K all stitches.
  • Row 6: P all stitches.

Main Pattern (Repeat Rows 1-12)

Now you'll begin the heart of the pattern. The 12-row repeat creates the wavy cable and lace texture. Follow each row carefully, paying attention to the pattern repeats between the asterisks (*).

  • Row 1 (RS): K3, *yo, SSK, K6, C4B, C4F, K6, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 2 (WS): P all stitches.
  • Row 3: K3, *yo, SSK, K4, C4B, K2, C4F, K4, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 4: P all stitches.
  • Row 5: K3, *yo, SSK, K2, C4B, K4, C4F, K2, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 6: P all stitches.
  • Row 7: K3, *yo, SSK, C4B, K6, C4F, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 8: P all stitches.
  • Row 9: K3, *yo, SSK, K2, C4F, K4, C4B, K2, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 10: P all stitches.
  • Row 11: K3, *yo, SSK, K4, C4F, K2, C4B, K4, K2tog, yo, K1; rep from * to last 3 stitches, K3.
  • Row 12: P all stitches.

Color Changes

To create the beautiful gradient effect that makes this blanket so special, follow this color sequence:

  1. Work Rows 1-6 with Color A (Seafoam)
  2. Work Rows 7-12 with Color B (Soft White)
  3. Work Rows 1-6 with Color C (Misty Teal)
  4. Work Rows 7-12 with Color B (Soft White)
  5. Repeat this sequence, always changing colors every 6 rows

Pro tip: When changing colors, do so at the beginning of a right-side row for the cleanest transition. Simply drop the old color and pick up the new one, leaving a tail to weave in later.

Continuing the Pattern

Continue working the 12-row pattern repeat, changing colors as described above, until the blanket measures approximately 34 inches from the cast-on edge. End after completing a Row 12 (WS) to ensure you're ready to begin the final border on a right-side row.

Final Border (Rows 1-6)

With Color A (Seafoam), work the same border as at the beginning:

  • Row 1 (RS): K all stitches.
  • Row 2 (WS): P all stitches.
  • Row 3: K all stitches.
  • Row 4: P all stitches.
  • Row 5: K all stitches.
  • Row 6: P all stitches.

Bind Off

Bind off loosely in pattern to maintain the stretch and drape of the blanket:

  • Knit the knit stitches on the RS
  • Purl the purl stitches on the WS

This ensures the edge remains flexible and doesn't pucker, which is especially important given the lace elements in the pattern.

Finishing

  1. Weave in all ends using a tapestry needle. Be sure to weave in securely, especially at color changes, to prevent any unraveling.
  2. Block the blanket gently to open up the lace and cable patterns. This step is crucial for achieving the beautiful, defined texture shown in the photos.
  3. Pin the blanket to the finished measurements of 30 x 36 inches on blocking mats.
  4. Allow to dry completely before removing pins. This may take 24-48 hours depending on humidity.

Tips for Success

Working with Cables

If you're new to cabling, practice the C4B and C4F maneuvers on a small swatch first. Remember that the cable needle holds stitches either to the front (C4F) or back (C4B) of your work, creating the directional twist of the cable.

Tracking Your Place

Use stitch markers between pattern repeats to help you keep track of where you are in the row. This is especially helpful when working the lace sections, as it's easy to lose your place.

Color Transitions

For the most seamless color changes, try to change colors at the same point in the pattern each time. This creates a consistent rhythm in the gradient effect.

Care Instructions

To keep your Seafoam Drift blanket beautiful for years to come:

  • Hand wash in cool water with a gentle wool wash
  • Lay flat to dry, reshaping as needed
  • Store folded in a cool, dry place

This heirloom-quality blanket makes a thoughtful gift for a new baby, a beautiful addition to a nursery, or a stunning piece to keep for your own little one. The soothing ocean-inspired colors and textures create a calming environment that both babies and parents will love.

Happy knitting! May your needles move as smoothly as the waves that inspired this beautiful design.


Also Check Out: We think you'd love this beautiful pattern on our sister site: Cottagecore Ocean Bloom Slippers - Free Pattern