I installed some new shrubs to my existing landscape and I'm looking for a "dummy proof" fertilization schedule. Based on what I've found from my local university they recommend a spring fertilization before new growth and a fall fertilization after the first hard frost. They recommend this at 1 lb N per 1000 or based on a soil test. I'm assuming something along the lines of 10-10-10 or 16-4-8? I want to go with a granular. I have been using a foliar fertilizer about once a month to keep them healthy since I had some leaf yellowing which much have been a nutrient defeicentcy. I believe it was a 20-20-20 with micros. Is this adequate? How is my timing? Tis is for my personal landscape and being a lawn guy I'm not too familiar with shrubs/trees.