Re: How to select a good organic fertilizer
Greensand is great to use generally. It is usually recommended to be applied at 2-4 pounds per 100sq.ft. It is a valuable soil conditioner as well as a slow release source of Potash (K) and many trace minerals. When added to clay it loosens the soil and when added to sand it improves the water holding capacity of the soil. This is because while it flows like sand, it holds a lot of water. Because it makes many minerals available it will improve the microbial life of the soil as well.
However, it will raise the pH of the soil slightly, so for acid loving plants or soil that is already very alkaline you should add sulfur at the same time. Perhaps this is why you read that it is recommended to go easy with it.