Here is a table from [Plant Food][1]:

> **Peashooter**: Turns them into faster-shooting Gatling Peas for three seconds. They shoot approximately 20 peas a second.  
**Sunflower**: Produces 150 sun.  
**Wall-nut**: Gives it a hard armor shell for extra strength.    
**Potato Mine**: Arms itself and produces two armed Potato Mines on other spaces.  
**Cabbage-pult**: Launches several cabbages at once, hitting every zombie and grave onscreen.  
**Bloomerang**: Shoots approximately ten boomerangs in four directions, up, down, left and right.  
**Iceberg Lettuce**: Freezes every zombie on screen, similar to the Ice-shroom.  
**Twin Sunflower**: Gives 250 sun.  
**Bonk Choy**: Punches zombies in every direction at a very fast rate.  
**Repeater**: Shoots like a Gatling Pea at first, but at the end it shoots a 2x bigger Pea.  
**Kernel-pult**: Launches several butter at once, hitting every zombie and grave onscreen.  
**Snapdragon**: Sets a 3x3 area in front of it on fire killing all zombies on those spaces.  
**Spikeweed**: Temporarily fills the row with other spikes poking up from the ground and pulls zombie to the Spikeweed.  
**Coconut Cannon**: Fires one big Coconut that kills all zombies in a row.  
**Spring Bean**: Bounces all zombies on screen.  
**Spikerock**: Temporarily fills the row with other spikes poking up from the ground and pulls zombies to the Spikerock.  
**Threepeater**: Shoots a wildfire of peas across the area.  
**Split Pea**: Both heads shoot peas like fast-shooting Gatling Peas. The Repeater head fires a big pea at the end.  
**Chili Bean**: Launches 3 extra beans randomly.  
**Lightning Reed**: Makes a storm cloud that damages the zombies with lightning.  
**Tall-nut**: Gives it a hard armor for extra strength like Wall-nut.  
**Pea Pod**: Gains a giant Peashooter head that shoots five big peas which do a lot of damage.  
**Melon-pult**: Launches melons out from the top that does 2x the damage to all zombies.  
**Winter Melon**: Same as Melon-pult with added slowing effect.  
**Imitater**: As the Imitated Plant  
**Snow Pea**: It shoots a lot of frozen peas  
**Torchwood**: The fire becomes napalm.

For full information there is the website above.

  [1]: http://plantsvszombies.wikia.com/wiki/Plant_Food