Sulfur burners are extremely effective and will control mildew by increasing the pH of the leaf surface, thus making the environment unsuitable for mildew to establish itself. Vaporized sulfur has also been found to interfere with the eggs of most insect pests preventing them from hatching. Sulfur burners should not be used within 30 days of an oil based product being applied to the crop (e.g. Neem Oil) or when the leaves are wet. Once the burner is being used in the garden, the grower should not enter the growing area. Do not breathe in the sulfur vapor. It is best if the room is left alone during hours of operation.
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