- Sulfur is the 10th most abundant element in the universe and serves many purposes. It is used as an organic fungicide, as an ingredient in fertilizers and for industrial purposes.
- Sulfur can be applied to the garden in two forms: spray or dust. Spray is often the preferred method, as dust is more likely to cause irritation if it is inhaled or comes into contact with skin.
- Vegetable garden plants that sulfur can be used on include peas, beans, potatoes, tomatoes, cucumbers and pumpkins, according to the University of California.
- Sulfur fungicide may damage some squash and melon varieties. According to West Virginia University, sulfur can kill some beneficial insects, including spiders and beneficial mites. Before mixing, spraying, dusting or storing sulfur, read all instructions and safety precautions on the package label. Do not apply sulfur in temperatures above 85 degrees.
- Other uses for sulfur fungicides include treating fruit crops such as apples and grapes and ornamental garden plants like roses, bee balm and phlox.
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