I saw a broken bag if alfalfa at tractor supply half price and gave it a try. I love it for amending planting holes. I think it won't burn the roots like some fertilizers or even putting medium. I like to add banana weeks, egg shells, coffee grounds, etc.when planting a rose. My grandmother used to add fish heads when planting. Don't have as many fish heads available as my grandmother.... need a live in viking, but can't find one worth the bother.