3-Dc Puff st = (Yo, insert hook in next st, yo, draw yarn through st, yo, draw yarn through 2 loops on hook) 3 times in same st, yo, draw yarn through 4 loops on hook.
With C ch 28.
Row 1: Sc in 2nd ch from hook, sc in each ch across, turn.
Row 2: Ch 3 (count as dc), skip first sc, 3 dc puff st in next sc, *ch 1, skip next sc, 3-dc puff st in next sc; rep from * across to within last sc, dc in last sc, turn.
Row 3: Ch 1, sc in first dc, sc in next puff st, *sc in next ch-1 sp, sc in next puff st; rep from * across to tch, sc in 3rd ch of tch, turn.
Rows 4 – 15: Repeat Rows 2 and 3 (6 times more). Finish off, weave in ends, block.