Miracle-Gro (3.5e Feat)
From D&D Wiki
 Miracle-Gro [Jigyousho]
Your plants are stronger and tougher than normal.
Prerequisite: Strengthen Plants class feature
Benefit: The plants you animate or summon gain an additional +2 bonus to their Strength and Constitution.
Special: If you have the Greater Plants class feature and this feat, your summon/animated plants have a +8 bonus to Strength and Constitution.