I want to try super phosphate as a means to nudge more blooms out of some of my perennials. I once saw a gorgeous flower bed on a garden tour. I asked the gardner how she got so many blooms. She said she dug up the bed ever spring, added super phosphate and replanted. Well, I don't have that much ambition. If I sprinkled it on in the fall, so it could work down over the winter, would that work? Or would it lose its punch over the winter, being a chemical, not a rock fertilizer?
TIA
LAS
Super phosphate in the fall?
