Fertilizer

Fertilizer is a material of natural or synthetic origin (other than liming materials) that is applied to soils or to plant tissues (usually leaves) to supply one or more plant nutrients essential to the growth of plants. It is used to fertilize a plant in the Zen Garden, to grow the player's plants bigger. It can be bought at Crazy Dave's Twiddydinkies and is unlocked after reaching level 5-4 in Adventure Mode. It costs $750 and comes in sets of five. The player can have only up to 20 at a time. The player's young Zen Garden plants will ask for them three times after three to six waterings, so that they can mature. A single plant needs three fertilizations until the plants are fully grown. While watering plants (when needed) gives the player silver coins, using fertilizer on their plants (when asked) will give them one or two gold coins (three gold coins in the Mushroom Garden or Aquatic Garden) or two diamonds (one for Marigolds). The player will know when their plant needs fertilizer when it has a little callout with a picture of it. After fertilizing, the plant will do nothing for about half an hour or so, until they need to be watered again.

Trivia

 * On the fertilizer bag on iPad, the player may notice it says "Mama" in small letters under the picture of the Sunflower.