Personaly I think this would probably be a big help IF Its the first couple years starting a new garden, or if you are a chemical only fertilizer gardener. However I think it would be almost usless on a well manure/compost based garden. In 1995 I bought some stuff from Gardens Alive, they sent a sample package. I applied it to 1 of 6 Brandywines, I could not tell the difference. But I had added manure/compost for 21 years. "If it works, use it; If it don't, try something else" You learn the most by doing Byron