Long-lasting fertiliser for hydrangeas 100 days - Substral - 1 kg is a specialist soil-applied product designed for comprehensive care of hydrangeas and other acid-loving plants grown outdoors. This product combines regular feeding with simultaneous regulation of the growing medium reaction, helping create optimal conditions for vigorous plant growth and root system development.
Hydrangeas gain vivid colour and abundant buds thanks to the systematic release of nutrients, which continues uninterrupted for more than three months. A high assimilation rate of 70% means that most of the substances contained in the granules are effectively absorbed by the plant, resulting in a stronger structure and long-lasting flowering. The fertiliser lowers soil pH, which stimulates shrubs to absorb minerals more effectively and promotes a change in flower colour to blue or violet shades in the case of pink and red varieties.
EC fertiliser NPK (Mg) 19+05+13 (2) m/m containing ureaform with a mixture of micronutrients. Total nitrogen (N) accounts for 19%, of which 3.0% is ammoniacal nitrogen, 0.8% amidic nitrogen, and 15.2% ureaform (5.1% soluble in cold water and 5.1% in hot water). Phosphorus pentoxide (P2O5) amounts to 4.5% in water-soluble form and 5% in neutral ammonium citrate and water. Potassium oxide (K2O) soluble in water is 13%, while magnesium oxide (MgO) accounts for 2%. The composition is supplemented with a mixture of micronutrients: boron (B) 0.02%, copper (Cu) 0.050%, iron (Fe) 0.30%, manganese (Mn) 0.08%, molybdenum (Mo) 0.02% and zinc (Zn) 0.02% - all water soluble.
The product is intended exclusively for outdoor use in cultivation in the ground of ornamental shrubs. Due to its extended action period, the hydrangea fertiliser only needs to be applied once or twice during the growing season. This helps maintain continuous feeding without the risk of over-fertilisation, which is crucial for the stable development of acid-loving plants.
The dosage of the product should be adjusted to the age and size of the plant, calculating the rate per m². In the first year of cultivation, apply 20 g of fertiliser and 10 g of acidifying agent. In the following years of care, increase the dose to 30 g of the main fertiliser and 15 g of growing medium pH-lowering product. These proportions ensure that the soil is properly supplied with the necessary elements.
Spread the granules evenly under the shrubs within a radius of up to 80 cm, which corresponds to the typical extent of the hydrangea root system. Both sachets included in the pack should be used at the same time, while keeping the different doses indicated above for each of them. After application, water the area thoroughly, as this activates the release of nutrients and allows them to penetrate deep into the soil structure.
The pack contains 1 kg of Long-lasting fertiliser for hydrangeas 100 days - Substral. It is an efficient and modern 2-in-1 solution that provides plants with complete feeding and the correct growing medium pH throughout the season. We invite you to place your order and give your hydrangeas the best conditions for flowering.