This week I'm visiting the garden of my friend Frank Pizzi, former curator of Horticulture and Ground at the Pittsburgh Zoo and Aquarium. We've known each other for decades and I was excited to see his garden which was a decade in the making. I'm also planning for fall bulb planting, and have a great trick to mark the areas for planting. For "You Should Grow This," I highlight an indestructible, deer resistant perennial that's a beauty. Rob Kruljac from Davey Tree explains what black knot is and how homeowners can deal with the disease.
