can you flush?.......

im using miracle grow organic and im ready to go into flowering the soil has too much nitrogen in it should i flush to get rid of the nitrogen are will that harm the plant

it will most definitely not ruin your plant. in fact its good to flush your plant every so often. flushes out everything you dont want in there.
but also remember it will flush out a lot of nutrients from you miracle gro soil, so you will have to raise your ppm.

if you have time release nutes in there, flushing will make more nutes release thus give your plant too much food. is your plant showing n toxicity? if it isn't, there is really no reason to worry about lowering n. it will lower as the plant uses it. if you have toxicity, that is another thing tho.

Unless your leaves are nearly black from too much nitrogen, or you have burning I wouldn't worry about it.