Green Ear

(Complete Adventurer, page 110, DnD 3.5)

[General]

Your bardic music can affect plant creatures.

Prerequisite

Perform (any) 10 ranks, bardic music

Benefit

You can alter any of your mind-affecting bardic music abilities (or similar Perform-based abilities from other classes) so that they influence only plant creatures instead of other creatures. However, plants receive a +5 bonus on Will saves against any of these effects.

Normal

Plants are normally immune to all mindaffecting spells and abilities.