Instructions
The plants in the battle will either spit out seeds that grow into goons or spit out LEGO pieces. Collect the pieces and fight the goons as they appear.
Use the pieces, once you've collected them all, to build a bomb under one of the plants to destroy it.
Continue building the bombs by following plants, defeating goons as they appear and avoiding Poison Ivy as she tries to attack.
Bomb the final plant and fight Poison Ivy when her life meter appears on screen.