ZomBotany is a portmanteau of the words zombie and botany, hence, the zombies in the mini-game are plant-zombie hybrids.
The Hypno-shroom has disappointingly incomplete effects on plant-zombie hybrids. Although hypnotized Peashooter Zombies do the about face and munch their normal brethren, they continue to fire peas towards the player's house (apparently from the back of their head) which continue to damage the player's plants. They also are not harmed by peas fired by normal Peashooter Zombies and so do not run interference for the player's plants. Unfortunately, these bugs have yet to be fixed, except for the iPhone version (however, hypnotized Jalapeno Zombies will still destroy the player's plants).
Spikeweed, Potato Mine, Spikerock, Sun-shroom, and Puff-shroom are surprisingly effective since the peas fired cannot harm them. Instead, it goes over them and harms the next plant in the row. However, when the player plants a Coffee Bean on a Puff-shroom or Sun-shroom, the Coffee Bean gets damaged by peas until it disappears.
In the ZomBotany mini-game, most plants can take 16 peas worth of damage before being destroyed.
The ZomBotany mini-game in the iPod Touch version is worth $10,000.
It is also the only mini-game on the iPod Touch version that is not available in a game pack.