Hi Anna, sorry, I returned home last evening after being away for a few days.
I don't add anything to the planting hole, although I've heard other folks say they do. In the spring I normally work a section or entire bed doing spring cleanup - removing old foliage, leaves, weeding, dividing, moving etc. When that section is done each cultivar in the bed gets a handful or two of milorganite and alfalfa pellets spread around it, a few inches outward from the crowns. Then I top dress the entire area with a 2 inch mix of ground leaves and horse manure. When cleaning the beds and dividing in the fall I do not add anything in the planting hole or on top.
