A deck that fulfills most of your needs. Bamboo Shoots bombard the zombies as the crux of the defense, and use Sweet Potato + Potato Mine OR Squash to take care of any problems that occur. Flak Seed or Kernel Pult take care of flying threats, but beware this is a high sun combo.
Explosive Combo deck, but with cheaper plants and easier setup but less efficiency. Butternut Squash allows for a little more removal due to less offense, and he does it cheap too!
Gravitree is a really powerful plant, but he requires some setup first before he can go fully aggressive. Garlics and Sweet Potatoes move zombies where you want, and Kernel Pult goes on sky patrol to make sure flying zombies do not harm your Gravitrees. Shuffle Truffle keeps zombies in Gravitree apple zones, and Squash for emergency zombie removal.
Want to only focus on 2 lanes? with Sweet Potato, you can! With 4 Bamboo Shoots in each lane, there's sure to be mass destruction in clustered amounts! Gravitree is optional, but can be used for attacks from the empty lanes.
This is a good deck for beginner free-to-play players. With only commons and rares, and with one plant of each damage type, this deck is a great jack-of-all-trades.
My default setup that I use in all situations that allow it, Lightning Reed is an ally.
Fairy Ring Mushroom's Army (created by DavetheFave11)
Fairy Ring Mushroom has a war to rage on the lawn! Garlic keeps the zombies away from Gloom-Shroom and Fairy Ring Mushroom. Chard Guard waits at the end of the empty lanes to bounce zombies back. Cabbage Pult as a cheap air guard (because this setup takes a lot of sun) and Squash for emergencies.
Primary objective is to control the zombie horde. Use Sweet Potato to lure them in while Bonk Choy and Spikeweed decimate the large groups at a time. Use Butternut Squash and Potato Mine to neutralize groups and brutes or pick off the early game. Lightning Reeds can be planted in the back to counter flying threats and provide greater control over the horde.