I recently found this easy to read article on plant nutrients: http://www.ncagr.gov/cyber/kidswrld/plant/nutrient.htm
Apart from a well balanced fertiliser and good soil, does anyone feeds their plants human supplements, vitamins, minerals or multivitamin tablets? The search engine shows a bit of use but I'm wondering if anyone here has tried it?
Are any of the vitamins humans need detrimental to plant health?