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For Organic & Conventional Production

Grower's Secret Phosphorus Fertilizer 0-9-0

Grower's Secret Phosphorus Fertilizer

For correction of Phosphorus and Calcium Deficiency in plant production.

Grower’s Secret Phosphorus 0-9-0 is a mined fertilizer used for the correction of phosphorus deficiencies in organic and conventional crop production. It can be applied dry or in a liquid suspension to the soil to prevent or correct phosphorus deficiencies which can negatively affect root development, fruit and flower production, plant growth and yields. For best results apply Grower’s Secret Phosphorus Fertilizer according to recommendations based on plant tissue or soil analysis for a given crop.

Use in organic crop production to promote greener looking plants. Suitable for use on all plant types as a soil fertilizer. 


Guaranteed Analysis

Available Phosphate (P2O5) 9.0%
Calcium (Ca) 30.0%
Derived from: Rock phosphate

Product sizes and weights

Grower's Secret Phosphorus, 50 lb. bags
Grower's Secret Phosphorus, 2000 lb. super sacks
Grower's Secret Phosphorus, 44 x 50lbs pallet
2024 OMRI + CDFA-4-color

How is Grower's Secret Phosphorus 0-9-0 applied?

Grower's Secret Phosphorus 0-9-0 can be applied pre-plant or in-season with standard application equipment.  Grower's Secret 0-9-0 can be applied in a liquid suspension or dry. Consult your local equipment representative for calibration and application information. 

Will Grower's Secret Phosphorus 0-9-0 burn my crop?

Phosphorus rich fertilizers will normally not burn crops. However, it should not be applied to crops under drought  conditions. Since it is impossible to test on every crop in all situations it is always advisable to run a small test on a portion of the crop before broad-scale applications. 


What is the shelf life of Grower's Secret Phosphorus 0-9-0?

The shelf life of Grower's Secret Phosphorus Fertilizer 0-9-0 is at least 2 years if stored in unopened bags under standard storage conditions for packaged fertilizers.

What package sizes is Grower's Secret Phosphorus 0-9-0 sold in?

Grower's Secret Phosphorus 0-9-0 is available in the standard 2000 lb. super sack and may be available in 50 lb. bags.

Can Grower's Secret Phosphorus 0-9-0 be used through irrigation systems?

Yes,  Grower's Secret Phosphorus 0-9-0 is screened to 100 microns, and only partially water-soluble.  It can be applied through irrigations systems but requires constant agitation and flushing of the system after application. 

What is the proper application rate of Grower's Secret Phosphorus 0-9-0?

The application rate is dependent on corp, crop stage, weather and soil conditions and nutrient availability.  It is recommended that a leaf and soil analysis are conducted to determine the correct rate of product to be used.  


For correction of Phosphorus and Calcium deficiency in plant production.

Grower's Secret Phosphorus 0-9-0 delivers organic nutrients for healthier, more robust plants.

  • calendar-icon-white-400-for-70
    Year Round

  • Low Salt

  • Low Nitrate