Sulfur Powder for Plants | Pure Sulfur PowderGot Sulfur? Pure Sulfur powder dusts plants against certain pathogens, adds Sulfer to soil and can lower Ph faster than other Sulfer additives. Atomic number sweet 16 on the Periodic Table (remember from high school?) and denoted by its telltale symbol S, Sulfur was referred to Biblically as brimstone and often reviled for its odiferous compounds. Today, of course, we know that elemental sulfur powder is an essential element used by various forms of