Laurw...
Wow....that is amazing! Who da thunk?
(that the hay didn't decompose, not the tubers up the wazoo.)
One year I put a 3" layer of fresh grass clippings at the bottom of one of my barrels before I planted it with lotus....it did better than all the rest. Of course when I did dump it out, it stunk to high heaven.
But apparently lotus loves to grow in stinky stuff.
By the way, the grass clippings were decomposed down to about a 1/2" layer, if that.
Peeyooooo....my hands still stink.
And I even used Crabtree & Evelyn Gardeners handsoap and then the same Hand Cream.