How to Knit a Separate Border Around a Finished Blanket

The best way to add a separate border to a finished knitted blanket is to pick up stitches along one edge, knit the border flat, bind it off, and repeat around the remaining edges. This creates a border that is joined directly to the blanket rather than sewn on afterward. The same approach works for a single knitted square, a full afghan, or a blanket assembled from smaller squares.

What an Added Knitted Blanket Border Is

A picked-up border begins after the blanket itself is complete. You insert your needle through the blanket’s finished edge, draw up loops of yarn, and place those loops on the needle as new working stitches. The border is then knitted outward from that edge.

This is different from knitting a long strip separately and sewing it on. A separately knitted strip can be useful for decorative trims, but a picked-up border usually lies flatter and is easier to match to the blanket’s shape.

A border can:

Cover uneven cast-on, bind-off, or side edges
Add a little weight so stockinette stitch curls less
Frame sampler blocks or patchwork squares
Add texture, contrast color, or stretch around the blanket edge

When a pattern says “pick up stitches with the right side facing,” place the blanket’s right side, the side you want displayed, toward you while you collect the edge stitches.

How to Knit a Separate Border Onto a Finished Blanket

Choose the border texture before picking up stitches, because the stitch count and the order of the edges can matter.

For Underground Crafter’s Anthology Blanket, the border styles are the useful choices.

Border Style	Best For	Stitch-Count Requirement
Seed stitch	A flat, textured frame	Start with an even number of stitches
Garter and stockinette stripes	A simple border with subtle bands	No specific stitch-count requirement
Ribbing	A stretchy edge that pulls inward slightly	Start with an odd number of stitches
Double seed stitch	A bold, textured finish	Start with a multiple of 4 stitches; use on the final two edges

Step 1: Finish and Prepare the Blanket

Complete all knitting, seaming, and repairs before adding the border.
For a blanket made from squares, spray block the individual squares if desired, seam the squares together, and weave in all the square-seaming ends before you begin the border.
Lay the blanket flat and inspect the outer edge. Make sure seams lie flat and no loose yarn tails will be trapped under the new border.
Choose border yarn in the same weight as the blanket yarn unless you intentionally want a contrasting texture or color.

Weaving in the blanket’s existing ends before adding the border makes the final finishing much easier. Once the border is attached, those old tails are harder to reach neatly.

Step 2: Set Up the Needles and Yarn

Use circular needles even though each border is knitted flat. The flexible cable supports the weight of a blanket much better than straight needles.

For its Anthology Blanket, Underground Crafter uses circular needles with a cord at least 40 inches long. Its sample uses US size 7/4.5 mm needles, or the same needle size used for the blanket squares; use the needle size that produced fabric you like in your own blanket.

Attach the border yarn at a corner or near a corner. Leave a yarn tail long enough to weave in securely when the blanket is finished.

Step 3: Pick Up Stitches Along the First Edge

Put the blanket’s right side facing you.
Insert the needle through a stable edge loop near the corner.
Wrap the border yarn around the needle and pull up a new loop.
Leave that loop on the needle as a new stitch.
Continue across the edge, spacing the picked-up stitches as evenly as possible.

Do not worry if the blanket edge does not offer a perfect one-to-one match of edge loops and new stitches. The goal is an edge that lies flat: too many picked-up stitches can make the border ripple, while too few can make it pull inward.

For the Anthology Blanket border instructions, the picked-up row counts as a right-side row of knit stitches. That matters because several border patterns begin their written instructions on the wrong side.

Step 4: Knit, Bind Off, and Work the Remaining Edges

Work the selected border pattern until it reaches the width you want, then bind off in the pattern specified for that border.

Work the same border on the opposite edge of the blanket.
Turn the blanket and work the remaining pair of edges.
Weave in the border yarn tails with a yarn needle.
Spray block the finished blanket if desired, shaping the corners gently as it dries.

A border is easiest to control when each edge is completed as its own flat section rather than trying to carry live stitches all the way around a heavy blanket.

If you choose double seed stitch, use it on the final two edges. Its outside edge is not as neat for picking up another set of stitches.

Four Knitted Border Patterns for a Blanket Edge

The border patterns use these standard knitting abbreviations:

RS: right side
WS: wrong side
Sl 1: slip 1 stitch without knitting or purling it
k: knit
p: purl
rep: repeat
BO: bind off
k2tog: knit 2 stitches together

A k2tog decreases the stitch count by 1 stitch.

Seed Stitch Border

For Underground Crafter’s Anthology Blanket, begin the seed stitch border with an even number of stitches. If you picked up an odd number, work k2tog in the first 2 stitches of the first row.

Row 1 (WS): Sl 1, *k1, p1; rep from * across to last st, p1.
Row 2: Sl 1, *p1, k1; rep from * across to last st, p1.

Repeat Rows 1 and 2 until the border is the desired width. Bind off in the pattern for Row 1.

Seed stitch is a strong choice for a blanket because its texture looks similar on both sides and helps the edge lie flat.

Garter and Stockinette Stripes Border

This border alternates garter ridges with a small stockinette stripe.

Row 1 (WS): Sl 1, k across to last st, p1.
Rows 2–4: Repeat Row 1.
Row 5: Sl 1, p across.
Row 6: Repeat Row 1.

Repeat Rows 1–6 until the border reaches the desired width, ending after Row 6. Bind off in the pattern for Row 5.

If you want a distinct straight line between the final garter-stitch rows, pick up the stitches through the back loop of the blanket edge.

Ribbed Border

A ribbed border is stretchy, but it also draws the outer edge inward somewhat, much like ribbing on a sweater cuff.

Use the stitch count required by the border pattern. If you picked up an even number, work k2tog in the first 2 stitches of the first row.

Row 1 (WS): Sl 1, *k1, p1; rep from * across.
Row 2: Sl 1, *p1, k1; rep from * across to last 2 sts, p2.

Repeat Rows 1 and 2 until the border is the desired width, ending after Row 1. Bind off in the pattern for Row 2.

Use ribbing when you want a soft, flexible finish rather than a broad, flat frame.

Double Seed Stitch Border

Double seed stitch creates blocks of texture rather than the single-stitch texture of ordinary seed stitch.

For Underground Crafter’s Anthology Blanket, use this as the last two borders because its outer edge is not neat enough to make picking up stitches for another border convenient. Begin with a multiple of 4 stitches. If your stitch count is not a multiple of 4, decrease evenly across the first row by working k2tog instead of k where needed.

Row 1 (WS): *k2, p2; rep from * across.
Row 2: Repeat Row 1.
Row 3: *p2, k2; rep from * across.
Row 4: Repeat Row 3.

Repeat Rows 1–4 until the border reaches the desired width, ending after Row 3. Bind off in the pattern for Row 4.

Making Corners and Changing Direction

A blanket border does not need a complicated mitered corner to look finished. With this edge-by-edge method, each bound-off border meets the next one at the corner.

Start picking up stitches close to the corner, but do not pull the first stitch so tightly that the corner puckers. When you reach a corner on the next edge, make sure the new border begins close enough to cover the raw-looking edge without overlapping heavily onto the finished border.

After all four edges are bound off, use the yarn tails to tidy the corners. Weave each tail into the back of the border and through the nearby blanket fabric so the join stays flat.

If a blanket has very uneven side edges, block it before starting the border. A relaxed, squared-up edge is easier to pick up evenly than one that is curled or stretched out of shape.

Checking the Blanket Border Before Final Blocking

Lay the blanket on a flat surface before you weave in the last tail or block it. Check the whole perimeter.

The border should lie flat without rippling.
The blanket should not pull inward along the bordered edge.
Opposite borders should look similar in width and tension.
The bind-off edge should have enough give that it does not tighten the border.
The corners should lie flat rather than curl upward.

If the edge flares outward, remove the border and pick up fewer stitches, spreading them more evenly. If the blanket edge pulls or cups inward, remove the border and pick up more stitches along that edge.

Frequently Asked Questions

Can You Add a Border to a Knitted Blanket After It Is Finished?

Yes. Pick up stitches through the finished outer edge with the right side facing, knit the chosen border flat, bind it off, and repeat around the blanket. This works on a newly finished blanket as well as an older afghan, provided the edge fabric is sound enough to hold the new stitches.

How Do You Attach a Knit Border to an Afghan?

Attach it by picking up stitches directly from the afghan’s edge rather than sewing on a separate strip. Insert the needle through stable edge loops, pull a loop of border yarn through each selected point, and knit those new loops into the border pattern. Finish by binding off and weaving in the yarn tails.

What Does “Sl 1” Mean in a Border Pattern?

“Sl 1” means slip 1 stitch from the left needle to the right needle without knitting or purling it. In these border patterns, the slipped stitch helps create a cleaner edge along the outer side of the border.

Can You Knit a Border Around a Single Knitted Square?

Yes. Treat the square like a small blanket: pick up stitches along one side, knit and bind off the border, then repeat on the opposite side and the remaining two sides. A textured border such as seed stitch is especially useful because it gives all four edges a consistent finish.

Do You Need Circular Needles for a Blanket Border?

Circular needles are the practical choice because the cable supports the blanket’s stitches and weight. Choose your border texture, prepare the blanket edge, and begin by picking up stitches along the first right-side edge.