The UnderGarden Cheats

Trophies
There are 9 Bronze Trophies, 3 Silver Trophies, and 1 Gold Trophy.

A very good year (Silver): Collect 17 crystals in the game
Blown away (Bronze): Grow 50% of plants in 'Wind Surfing', 'Kaboom!', 'Blown Away', and 'Handle With Care'
Color your world (Gold): Grow all the flowers on every level
Happy birthday to me (Bronze): Complete 'Grab Hold', 'Watch Out, They Spit', and 'Hold on Tight' in under 20 minutes
I wanna be a rock star (Silver): Pick up every musician in the game at least once
Let's clear the air (Bronze): Clear most of the smog in the smoggy levels
Listen to the flower people (Bronze): Re-bloom some flowers carrying 3 musicians at once
Rainbow collection (Silver): Collect all the bonus flowers in the game
Someone set us up the bomb (Bronze): Drop a bomb on the second player in a co-op game
Sowing the seeds of love (Bronze): Grow your first fruit tree
The devil wears produce (Bronze): Hold a musican, heavy fruit, lantern fruit, and explosive fruit while wearing red horns
Time to hit the sack (Bronze): Hit every pollen sack in 'Batteries Not Included', 'Zap!', and 'Into the Machine'
Turn that thing off (Bronze): Drop a bomb on a musician