Jack’s 3-2-1 Part A & Part B is our base.
The first formula removes Epsom Salt from Jack’s 3-2-1 which brings us into range for magnesium. I added Liquinox Iron & Zinc to bring iron and zinc into the recommended range.
The second formula adds AgSil16H at .75g/gallon. This increases silica by 104.5ppm and potassium by 53ppm. The potassium is still in range if we use the article by Science in Hydroponics as a reference but it is out of range from the formulation here which lists 200ppm as a peak.
Silica helps roses produce more compounds to fight off fungi, pests, and also build healthier stems.
Info used to make the fertilizer:
Jason from Fraser Rose Valley Farms Lists iron at 5-10ppm
Lists 100-150 Nitrogen, 30-50 Phosphorous, and 100-150 Potassium.