Yeah, I've NEVER heard of greensand having a thing in the world to for with taste... I do firmly stand behind it's use in soil recipes, however... The Espoma Greensand I use is an 0-0-0.1, and is a wonderful addition to any good, home-made soil recipe... It helps with aeration and irragation, and contains some nice marine derived glaucomite and has iron-potassium silicate in it.... It helps to make the medium looser which is a good thing to use in conjunction with different things like peat moss, coco coir, cotton burr, dolomite lime, epsom salt, kelp, and vermiculite (all in the correct portions to the amount of medium), which all contain good trace minerals and micronutes, that are essential in a well-rounded base for a soilmix including the ingredients that contain good macro-nutes, of which, although natural and organic in nature, are often slow-acting, like rock phosphate and bone meal, along with other soil-additives like feather meal, alfalfa meal, cocoa meal, blood meal, worm castings, P- and N- rich bat guanos(usually adminestered at the proper stages of development, via teas), and so forth, and so on... I use a little plastic kiddie pool and a yard rake and hoe to pour my pre-measured amounts of these various things into, and thoroughly mix them all together, and then scoop into my five-gallon buckets, about every two or three grows, and I will add some of these things from time to tim, as my plants show me they need them, and then discard the old dirt into my "pile" in the corner of my buddies yard, where I grow at... I use liquid seaweed that I dilute with distilled water for weekly waterings, as well as foliar sprays during the vegetative stages, which helps protect the leaves and stems, by putting on a natural barrier, of sorts that safeguards against certain pests and diseases, and I also use black strap molassas, diluted in water during flowering, once or so a week, and it seems to enjoy the natural sugars it provides the Mycorrhizae, which is the living fungi in the soil, which are divide into two types-endomycorrhizas, and ectomycorrhizas... It all works together in healthy soils to breakdown the elements and minerals and prepare them to be taken up into the plants in quite an effective manner... It acts as a natural protection against pathogens and root predators, and also helps water's relationship with the medium, especially during a dry spell, which is essential if u r growing outdoors, where u cannot or do not go every single day, and may not have a controlled watering system in place... There is much to be said and learned from such home-made soil mixes, and it is interesting to know exactly what is in everything to do with your medicine's life...