Don’t be alarmed when the blanket comes off the needles looking all wonky. It will require fairly severe blocking to achieve its square shape.

Information about blocking can be found here and here.

Using A, CO 4 sts onto one needle. Slip 2 sts to second needle and join to begin working in the round, being careful not to twist. After working a few rounds, you may wish to place a safety pin or split ring marker in the work to indicate beginning of round.

Set-up Round: [Pfb, place marker, pfb] twice. 8 sts.
The work is now divided into four sections. Each needle holds 2 sections; ends of first and third sections are indicated by stitch markers, and ends of second and fourth sections are at ends of needles.

Using B, work as follows:
Round 1: [Kfb, k to end of section] four times. 12 sts.
Round 2: [Pfb, p to end of section] four times. 16 sts.
These 2 rounds form Increasing Garter Stitch Pattern.

Continue in pattern, working rounds using colors as follows. After the next 2 stripes, break old color and join new color at each color change.

Work 2 rounds A. 24 sts.
Work 2 rounds B. 32 sts.
Work 4 rounds A. 48 sts.
Work 4 rounds B. 64 sts.
Work 4 rounds A. 80 sts.
Work 4 rounds B. 96 sts.
Work 6 rounds A. 120 sts.
Work 6 rounds B. 144 sts.
Work 6 rounds A. 168 sts.
Work 6 rounds B. 192 sts.
Work 8 rounds A. 224 sts.
Work 8 rounds B. 256 sts.
Work 10 rounds A. 296 sts.
Work 10 rounds B. 336 sts.
Work 12 rounds A. 384 sts.
Work 12 rounds B. 432 sts.
Work 14 rounds A. 488 sts.
Work 16 rounds B. 552 sts.

Size Large Only:
Work 18 rounds A. 624 sts.
Work 20 rounds B. 704 sts.
Work 22 rounds A. 792 sts.
Work 24 rounds B. 888 sts.

All Sizes:
Loosely BO all sts using A.

Wet block to dimension listed in “Finished Measurements”, above.