Sulphur is a natural resource that is great for organic gardening. Sulphur can be used as an insecticide and and fungicide on various plants such as roses, shrubs, ornamental, and vegetables.
Some plants can not tolerate Sulphur. Avoid putting Sulphur on plants that advise against it. For more information on using Sulphur on plants and vegetables, including those to avoid, read Using Sulphur In Flower Beds and Gardens