Sulfur is the stuff of brimstone.
This bright yellow mineral has anti fungal properties that make it valuable to gardeners facing brown spot, crown rot, and other fungal diseases. Sulfur can also be used to acidify soil that has a pH that is too alkaline. Sulfur is an essential nutrient used by plants. It helps plants form proteins and specific enzymes. Sulfur in the soil also helps reduce salt levels.
Creating chemical balance in the garden
Most plants prefer a relatively neutral to slightly acidic pH. Some plants, such as blueberry, prefer more acidic soil. Sprinkling sulfur throughout the garden and then watering it in creates sulfuric acid. This is not the acid that will dissolve your car’s paint, but it will help make many nutrients available to plant roots. Before treating soil with sulfur to adjust the pH, it is important to get a soil test from a reputable lab. Too much of a good thing is a bad thing….
Sulfer as fungicide
Dusting plants with sulfur can prevent or counteract many fungal diseases, such as powdery mildew, brown spot, and others. Fungi generally avoid acidic environments, which is what makes sulfur so effective as an organic fungicide.
Do not use horticultural oil within 2-4 weeks of applying sulfur. Sulfur and horticultural oil combined are phytotoxic (poisonous to plants) when combined. Also, it is better to use fixed copper, rather than sulfur, on apricot trees.
You can grow a surprising amount of food in your own yard. Ask me how!