Caroline?? Strontium??? REALLY!! I bought the 44# bag also and kept 10# for me and gave the rest to the botanical garden. They are really touchy about non-organic stuff (have to look up strontium - I associate it with bombs)
I also spread mine in fall. Buying it locally in 5# boxes is way expensive so it is worth paying the freight (and transshipping in Portland, OR) and buy a big bag. I was surprised that it was powdered (guess it pays to read more carefully) as I was used to the granular stuff. Seems like that would last longer breaking down. And I also put it on other things after all the peonies were seen to.
Liz, how much per peony did you apply?
