Money

Money is used to buy items from Crazy Dave's Twiddydinkies. (Before the shop is unlocked, it can be used to purchase seed slot upgrades directly from Crazy Dave). In most cases, it will drop under certain conditions, and the player must click on it or have a Gold Magnet collect it to obtain it, although it will sometimes be automatically added to the bank. (You can't have more than $999.990; once that amount is reached all money collected won't affect your total.)

Currency
There are three types of currency:
 * Silver coin - worth $10
 * Gold coin - worth $50
 * Diamond - worth $1,000

Earning Money
Money can be earned in several ways:


 * Killing Zombies (Sometimes coins, diamonds, chocolate, or Zen Garden plants may drop)
 * Leftover Lawn Mowers, Roof Cleaners, and Pool Cleaners (They turn into gold coins and are automatically collected)
 * Marigolds (They drop coins and possibly diamonds at intervals)
 * Note: Gold Magnets don't drop money, they simply collect it.


 * Completing Levels (When Mini-games, Puzzle Mode levels, and Survival Mode levels are completed, a money bag or trophy is dropped; clicking on it will cause gold coins or diamonds to be automatically collected)
 * Eating Brains in I, Zombie (Coins, diamonds, presents, or Chocolate may drop)
 * Every few levels in Vasebreaker Endless (The last vase will drop a money bag)
 * Completing Adventure Mode levels after beating them for the first time (The last zombie will drop a money bag with 5 gold coins in it)
 * From Zen Garden Plants (Zen garden plants drop money after being watered or fertilized, as well as after the Phonograph or Bug Spray is used on them. After the Phonograph or Bug Spray has been used, they drop occasional coins in a manner similar to Marigolds.)
 * Destroying a Grave with a Grave Buster (Coins, diamonds, presents, or Chocolate may drop)
 * Selling Zen Garden Plants (Directly adds a certain amount of money to your bank balance; this amount depends on the type of plant and its maturity)

Trivia

 * The graphic for the diamond shares a close resemblance to the diamond in the Popcap Game Bejeweled.