Re: Experimenting with creating filtered coarse sand for corms
If anyone is curious about the yellow powder on the cut part of the rhizome, it's 99.99% pure sulfur. Sulfur is very inexpensive when purchased pure but is more expensive when purchased as a plant fungicide powder. It works great and also repels moisture where it is applied. I don't know what it sells for now but when I bought it was less than a Dollar a pound.
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