Phosphate That Won't Leach

Soft rock phosphate is a bio-friendly, colloidal clay-based calcium phosphate that can never lock up, in stark contrast to all other phosphate sources. This exceptional fertiliser includes 8 – 9% phosphorus, 19.3% calcium, a high analysis of silicon and a rich lode of trace elements. A microbe friendly bio-phosphate, which is an integral part of our soil regeneration program. This is one of the few phosphate sources that do not have problems with high levels of the heavy metal cadmium.

Recommended Usage

Topdress with CalPhos and Gypsum along with Worm Castings to ensure the proper nutrients are available as you go into flowering.

Use at 1/4 Cup 30 litres of soil mix, top dress or put directly into transplant hole