This article's content is accurate to the most recent public game version, 0.4.8d.
"Releases a cloud of pollen. 50% chance for Confused against all enemies."
Cost: 5 MP
Source: Equipping the Plant Core.
Hallucinogenic Pollen is a spell with a 50% chance to inflict the 
Confused status effect against all enemies.
Similar to using Disquieting Puppet Show, the confused effect may break each time an enemy takes damage, including when they hit themselves or each other. Be aware that unlike being 
Charmed, confusion doesn't prevent enemies from targeting the player's party. It does prevent them from using their skills, however.
The following enemies can cast Hallucinogenic Pollen: