Iris lilies, you made me think of the time my dad asked the guy across the street if he could have some of his horse manure. The guy asked "how many buckets?" And my father pictured 20 gallon buckets. He said "well, maybe ten if you don't mind - would you like me to move it?" And the guy said "no , it's no problem, I have to scoop it up anyway. Where would you like it?" And dad said "oh, just pile it anywhere along the side of the garden."
then he came home from work and discovered that the guy meant "tractor buckets" there was a huge mound of uncomposted manure all down the side of the garden.