Soft rock phosphate (SRP) is a mineral powder phosphate source, that provides a long lasting, slow release source of phosphate that can be applied in a variety of ways. It can be top-dressed, mixed into your soil or even used as a 'spike'.
What are the benefits?
SRP does not leach nutrients over time.
Furthermore SRP is also a great mineral to increase the tilth and improve overall structure of the soil.
SRP has an abundant source of trace elements, which assist your plants to grow and function at their optimal activity.
With 9% Phosphorus 25% Silica and 19% Calcium you have three of the major elements needed for a fast and productive flower period, allowing your plants to reach their full potential.
Soft Rock Phosphate
We recommend a rate of 1.5 cups per 75L of growing medium for a first application and another 1/4 cup each subsequent cycle depending on your nutrient demands.
For Plants & Soil Only
McDowell's staff Herbalists can not diagnose you or your companions disease or illness. What they can do is offer a herbal program to assist with healing, after you have had advice from your doctor or specialist. If you have unexplained pain or symptoms, seek medical advice.
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