During gameplay, hold teh C+Z buttons on the Nunchuk, then use the directional pad on the Wii Remote to enter these cheats.
Down Down Left Left Left Left Up Left- Earn 9999 Gopher Bucks
Down Down Up Right Left Left Right Up- Earn all Flower Pack and Knapsack items
While on the Main Menu screen hold C + Z on the Nunchuk and enter these codes with the Wii Remote
Up Left Down Right Right Down Left Up- Unlocks all Antics
Up Right Down Left Left Down Right Up- Unlocks all bonus items