Here's To Nature
Lower level players will have their level determined for them by the game, but if you have previously earnt and built the Large Waterfall deco you can decide for yourself whether or not you want to be sensible or go daft:
For any other information regarding the event, check out the Big Farm wiki - it's full of really useful hints: Big Farm Wiki
For more information on which products give the best drop rates fro collectibles, check out Larino's Corner
For more information on which products give the best drop rates fro collectibles, check out Larino's Corner