Sulfur dust, an organic way to prevent pests and diseases on tomato plants

I have been using and testing sulfur dust on tomato plants. Sulfur dust is used as a preventative fungicide. Apply it before you get the pests and / or diseases. It has worked quite well during the warm summer weather and I will use it also during the cooler spring months next season. Rather than die from some sort of pests and diseases, tomato plants treated with sulfur dust now seem to die of old age. My experience shows sulfur dust prevents powdery mildew. The white leaves, the brown and yellow leaves that eventually dry up and kill the leaves. I experienced little or none.  

       There are 100’s of types of powdery mildew.  Above are common looks of powdery mildew

Also, spider mites that always seem to come during warm weather. When you see little spider type webs on the tomato leaves you know you have them and they will kill the plant. I experienced no spider mite activity. Sulfur dust is used to prevent pests and diseases. It’s best not to wait until you have problems although even applying sulfur dust after experiencing powdery mildew stopped the spread of the disease.  

Sulfur dust is organic; it comes from Mother Nature. It is not a man-made pesticide. How to apply sulfur dust?  I learned this from a person in northern Spain who saw pictures of my tomato plants and passed on the sulfur dust information.  

Always follow the manufacturer directions when applying. Directions say you can mix it in water and spray on or apply as a dust. For tomatoes, apply as a dust. You can use a duster which makes it easy for large areas or you can take and cut about a 12 inch section out of a women’s nylon stocking. Tie one end, fill through other end with sulfur dust. Then tie that end and shake the dust onto tomato plants.   

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Wear long sleeve shirt, use a dust/painters/medical type breathing mask. Wear goggles and plastic/latex gloves. You must purchase sulfur dust.  Sulfur powder is too coarse. Sulfur dust is very, very fine fine — exactly what you need. Apply a light coating every week to 10 days right up to harvesting tomatoes. As new leaves and stems grow they need a protective coating of sulfur dust. Sulfur kills the disease spreading powdery mildew spores. Prevents them from reproducing. Sulfur dust does not work on all plants. It burned my cucumber plant.