(Crazy Dave appears) Crazy Dave: Greetings, neighbor!
Crazy Dave: The name's Crazy Dave.
Crazy Dave: But you can just call me Crazy Dave.
Crazy Dave: Listen, I've got a surprise for you.
Crazy Dave: But, first, I'll need you to clear the lawn.
Crazy Dave: Use your shovel and dig up those plants!
Crazy Dave: LET THE DIGGING COMMENCE!
(After the player digs up all the Peashooters)
Crazy Dave: Oh goody, now for the surprise...
Crazy Dave: WE ARE GOING BOWLING!!
Crazy Dave: HERE, TAKE THIS WALL-NUT!
Crazy Dave: why'd I put a wall-nut in your hand?
Crazy Dave: Because I'm CRAAAZY!!!!!
Crazy Dave: NOW GO! BOWL ME A WINNER!
(Crazy Dave leaves)
This level is generally easy. A regular Zombie or Flag Zombie takes one hit by Wall-nut, while a Conehead Zombie takes two. The only difficulty that may occur is if too many zombies appear on the screen at the same time. Eliminate this factor by using Explode-o-nuts.
The player still has the Lawn Mowers to defend their house, just in case this does happen.
This level is a good level to earn coins. In order to do so, wait for as many zombies as possible to come on the screen without them becoming a threat to your brains. After the first zombie you kill, every other zombie the same Wall-nut hits will drop coins.
Save Explode-o-nuts for emergencies. However, note that these nuts will not yield coins when it hits multiple zombies. This is because it does not ricochet and simply explodes upon contact with a zombie.
Plants vs. Zombies Wiki has a gallery for Level 1-5.