Fume-shroom

The Fume-shroom is the first avaliable direct-damage attack plant with an area-of-effect attack, as the fumes hit everything within range. They have the same rate of fire as a Peashooter and do one Normal Damage per fume burst, although this hits all zombies nearby. They can be upgraded to the Gloom-shroom once its seed packet is purchased from Crazy Dave's shop.

Suburban Almanac Entry
Fume-shroom

Fume-shrooms shoot fumes that can pass through screen doors.

Damage: normal

Range: all zombies in the fume cloud

Sleeps during the day

"I was in a dead-end job producing yeast spores for a bakery", says Fume-shroom. "Then Puff-shroom, bless 'im, told me about this great opportunity blasting zombies. Now I really feel like I'm making a difference."

Cost: 75

Recharge: fast

Strategy
Being able to damage multiple zombies at a time gives the Fume-shroom a big advantage over Peashooters.Try putting two or three in a row behind a Wall-nut or Tall-nut to maximize the damage, while still protecting them. They are absolutely essential on any level with Screen Door Zombies (or Ladder Zombies, unless you hope to grab their doors with a Magnet-shroom or hit them with a catapult plant. They are also good against Dancing Zombies, because they are able to damage the lead dancer as well as the shielding Backup Dancers. Another good strategy requires the purchase of the Gloom-Shroom. By putting the Gloom-shroom right infront of the Fume-Shroom, the Fume-Shroom can actually fire into the upgrade plant and fire more fume in all eight directions.

Trivia

 * Fume-shrooms are the only non-Lobbed-shot Plants able to shoot up the slant of the Roof.
 * This does not mean they should be used there, due to requiring a Coffee Bean and their limited range which can cost a lot.