Water Snowball (Gymnocoronis spilanthoides variegatus) = Monarch Butterfly favorite (blooms thru October in Midwest) & is like a Monarch Magnet. A bloom size of large pea, appears fuzzy/whispy (similar blossom structure as formed by Ironweed, but smaller) is white & w/ strong sweet scent. Plant grows in clay soil within pot, placed into another larger pot of water - not necessary to have actual pond. Water Snowball not native to midwest & does not overwinter well indoors. Yet, Water Snowball worth replacing every year after observing VERY, VERY HAPPY Monarchs enjoying these lucious Water Snowball blooms during their long migrating journey south!!!