Base rnd, each side: Multiple of 18 + 15 + corner sts.
Begin 3 sts to left of corner st.
FLOWER CLUSTERS
Ch 1, sc in first st.
First and second flowers: [(Ch 5, tr2tog in 5th ch from hook) two times, (ch 4, slip st, ch 4, tr2tog) in same ch — three partial petals made] two times, (ch 4, slip st, ch 4, tr2tog, ch 4, slip st) in same ch, ch 4, slip st in ch at tip of next petal — four petals completed on second flower; ch 4, slip st in ch at center of first three partial petals, (ch 4, tr2tog, ch 4, slip st) in same ch, ch 4, slip st in ch at tip of first petal — four petals completed on first flower; sc in next 9 sts on base rnd.
Third flower: (Ch 5, tr2tog in 5th ch from hook) two times, drop loop from hook, insert hook from front to back through tip of fourth petal of first flower and into dropped loop, pull loop through — join made; (ch 4, slip st, ch 4, tr2tog) in same ch, join to fourth petal of second flower, (ch 4, slip st, ch 4, tr2tog, ch 4, slip st) in same ch, ch 4, slip st in ch at tip of first petal of third flower — four petals completed on third flower, sc in next 9 sts on base rnd.
Next cluster: (Ch 5, tr2tog in 5th ch from hook) two times, join to fourth petal of third flower; (ch 4, slip st, ch 4, tr2tog) in same chain to complete three partial petals; continue in this manner to work three-flower clusters to 3 sts before corner st, ending by working a complete third flower; sc in next 3 sts.
CORNER CLUSTERS
2 sc in corner st, (ch 5, tr2tog in 5th ch from hook) two times, join in fourth petal of last flower made, (ch 4, slip st, ch 4, tr2tog) in same ch — three partial petals made, *(ch 5, tr2tog in 5th ch from hook) two times, (ch 4, slip st, ch 4, tr2tog) two times in same ch, ch 4, slip st in same ch, ch 4, slip st at tip of next petal — four full petals made; rep from * once more, ch 4, slip st in center of first flower, (ch 4, tr2tog, ch 4, slip st) in same ch, ch 4, slip st in ch at tip of first petal of first corner flower, sc in corner st; sc in next 3 sc.
Continue working flower clusters around, joining second petal of first flower of each cluster to fourth petal of flower from previous cluster. On final cluster, join fourth petal of first flower to second petal of first flower from first cluster. Sc in each st to beg of rnd, join with slip st to first sc. Fasten off.