The Gong Zombie can summon Blew Zombies, plus, there are also two Bomb Stands in the level, which can result with a huge amount of Blew Zombies blowing up the player's defenses. But since Iceberg Lettuce can make the Blew Zombie drops the bomb immediately, and the player can also trick them by putting a cheap plant when they're not in their defenses yet, this level should not be a problem.
Start off like normal. Remember to also plant plants on Power Tiles to get some Plant Food. Use Iceberg Lettuce to delay the first zombies.
Plant attack plants to attack the zombies.
When you see a Blew Zombie, make it drops its bomb quickly with Iceberg Lettuce or by strong attacking plants, or make it explodes the bomb before it's in your defenses.