Lawn fertilizers usually have numbers around that range. I'm sure you 'could' mix it weak and get away with it for a while, but even
at 1/2 strength, 16 seems a little high for N. Don't mj nutes usually have N in the single digits? I (personally) have never gone above
10. It seems to me like if you dilute it to the point where you're not gonna fry your plants, you might be good to go with the N, but
you're just asking for some kind of deficiency somewhere else. Regardless, I wouldn't use it for flowering.