This pattern is no longer available from Interweave, but now is available for free here: https://www.ravelry.com/patterns/library/pillow-corsage-2...

Notes on yarn requirements (from the pattern):

Worsted/ chunky weight yarn for the Flower:

• Center- 5½ yds
• Middle petals- 16½ yds
• Inner petals- 9 yds
• Outer petals- 24 yds
• Center detail -1¼ yds + ½ yd in 1-2 (depending on version) other yarns for embroidery embellishment

A medium weight novelty or chenille yarn for the:

• Center trim- 2½ yds

Worsted/chunky weight yarn for the Blossom Spray (Version 2):

• Blossoms- Four 1yd lengths, and one 1¼yd length of yarns used to make the flower
• Stems- 2 lengths of yarn, one 25” and the other 20”