Garter Edge used on the Nanna Rug

Cast on 14 st on waste yarn/crochet sts. All rows: Knit.
Knitting from the outside back to the inside - pick up one stitch (loop) from the cast on squares and knit it (15 sts), turn, k2 tog knit 13. Along edge till the end of squares.

Knitting from the outside back to the inside - pick up one stitch (loop) from the cast on square corners and knit it (15 sts), turn, DO NOT k2 tog knit- SLIP 1 KNITTED INTO CORNER ST - knit 14, turn, knit 14 W&T, knit to end; turn knit 13 W&T and so on until 2 sts remain to be knitted and begin down the other side. knit 3 turn; slip 1, knit 2, turn; knit 4, turn; slip 1 knit 3, turn, knit 5 turn; slip 1 knit to end, turn and so on back and forth until back to knit 14, knit again into corner st, turn and knit3 tog.

continue down the next side as before, straight garter sts on side, attaching as you go, short rows on corners until you've gone around to the beginning again, unravel waste yarn and attach to end by kitchener st/graft st.