FrontierVille Prairie Pile

 Prairie Pile is part of the manure collection in FrontierVille, you will need to get five of it to help complete the collection. This is part of the collection in order to get Saltpeter. which in turn helps you to craft the Fireworks Goal.

Prairie Pile is obtained from the Mule and the Horse. 

Mule: harvests in 1 day 12 hours, can be bought with  3 horseshoes + 2000 coins

Horse: Harvests in 2 days 12 hours can be bought with 4 horseshoes + 10000 coins