Using old orchid fertilizer on veggie?
I have some old MSU formula granular orchid fertilizer that I perhaps won't need anymore. I'm thinking of applying them to my vegetable garden. I have some tomatoes, corns, and some greens. My garden's soil is poor (clay-ish), and I don't care much about being organic so using chemical fertilizer is totally fine. I'm just wondering whether there's anything in this orchid fertilizer that might be harmful to human (when the plants are eaten as food). The fertilizer seemed produced by a small local vender using the MSU formula, and there's not much information on the package other than the recommended dose (no detailed ingredients).
Or to put it this way, have you heard of any commercial fertilizer that cannot be used for plants that are intended to be eaten?
Thanks in advance.