Cedar is good!! Limestone -I just got regular road limestone. Cheap. With bark mulch- just make sure doesn’t touch tree.... protect trunk & keep it clean/clear. Voles & mice r issue. Dwgh- think they may bounce back if keep em Sprayed. Insecticide & fungicide...... u will b reading labels & using multiple. Some “look expensive” but they are low rate so if u spend a few hundred bucks- realize it’s gonna last long time.... I have all these on hand off top of head: Merivon Copper spray Myclobutinyl Captan Propiconazole Mancozeb streptomycin for blight & few other antibiotics out there if blight is issue. Insecticides.... some of these I only use in specific careful cases (some nasty, some not & depends if I eating or not) read labels- some aren’t for certain things or times. Just do homework: Neem oil Malathion Perythrins like permethrin & bifenthrin triazicide Imacloprid (nasty but does have place in my scenario with no risk to bees) Few others. Even a miticide if needed.