Sulfur

Granular sulfur is used to acidify soil, which is necessary for acid-loving plants, increasing the acidity of alkaline soils. Over time, any soil needs additional acidification. If you notice a delay in plant growth, various developmental disorders, or a decrease in yield, this is a clear sign that the soil needs to be acidified.

Granulated sulfur for blueberries dissolves gradually, ensuring a stable acidity level over a long period of time. This helps to lower the pH of the soil, allowing blueberries to better absorb nutrients from the substrate. The product begins to work approximately six months after application to the soil, providing long-lasting and uniform acidification.

When planting blueberry seedlings, granular sulfur is added to the planting hole, mixing it evenly with peat. For existing plantings, sulfur is applied twice a year — in early spring and mid-summer. For an effective oxidation process, the soil must be moist and well aerated.

The application rate of granular sulfur for blueberries depends significantly on the mechanical composition of the soil. Soils rich in organic matter, as well as clay soils, are characterized by high cation exchange capacity and, therefore, high buffer capacity. In such soils, the application rates of sulfur for blueberries are significantly higher than on light sandy soils. Moreover, several applications of sulfur may be required to achieve the desired acidity level.