Ah, it’s got more going on than I thought. It could burn but I wouldn’t be too concerned about it. It’s harder to burn plants with amendments than say with salt fertilizers. Start slow, maybe at half the amount they recommended. Crank it up if the plants don’t show any negative affects.
in my actual garden I don’t really worry about burning plants. I rarely measure my amendments and I never experienced plants freaking out and getting burnt. Now I have a bunch of miracle grow that I occasionally use in my house plants (trying to get rid of it but people keep giving me more) and I’ve definitely burnt plants with it.
People keep giving me chemical fertz and I can’t figure out how to ethically use it all. I feel like it’s wrong to just toss it.