How to Beat level 3-1 of Plants vs Zombies HD for the iPad

Need help figuring out how to beat level 3-1 of PopCap Games' Plants vs. Zombies for the iPad? See how it's done with this gamer's guide, which presents a complete walkthrough of the process. With the right technique, the level is easy to beat. For more information, and to win stage 3-1 of this whimsical tower defense game yourself, watch this helpful video guide.