pretty clever idea. i just watched it on "dirty jobs". they are pots made of cow manure. you can plant them straight into the ground or a bigger pot. 
CowPots in the news! Read excerpts from past articles and stories.
CowPots Pots made from Nutrient-Rich, Recycled Cow Manure
CowPots in the news! Read excerpts from past articles and stories.
CowPots Pots made from Nutrient-Rich, Recycled Cow Manure