i would say the phosphate over the magnesium
but you still need a more balance in the npk with potasium and generally tiny amount of nitrogen.

its ok to sprinkle some as a top dressing and it would be good to make a tea out of it(soak the fert in a 5 gal bucket with airstones to aerate the water)

what type of stores do you have around?
texas grass Reviewed by texas grass on . nutes for flowering? I've been looking around everywhere for plant food without nitrogen and the only things I can find around here besides bone meal and blood meal are super phosphate which is 0-18-0 and magnesium sulphate which says 9.5% magnesium total and 12.5% sulfur these are the only products I can find around here that seem close to match with what I need for flowering would it be good to use these through flowering?? Rating: 5