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ICL SPECIALTY FERTILIZER
Peters Professional 20-20-20 General Purpose Fertilizer
Peters Professional 20-20-20 General Purpose Fertilizer is an excellent npk-balanced fertilizer that utilizes acidifying action to combat excessive pH levels in mineral-heavy growing media.
As low as
$66.48
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Peters Professional 20-20-20 General Purpose Product Page
Min : 66.48 - Max : 66.48
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Price as of
10/19/25
10/19/25
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Peters Professional 20-20-20 General Purpose Fertilizer, manufactured by ICL Specialty Fertilizer, is an impressive water-soluble fertilizer that prevents excessive pH in various mineral-heavy growing media, completely eliminating plant toxic minerals.
Specially formulated, this product can be used in multiple water types on a wide range of crops, either alone or rotated with a C (customizing) component.
Peters Professional 20-20-20 General Purpose Fertilizer encourages healthier ornamental growth with minimum micronutrients, especially during the spring and summer months.
Tools Needed
This fertilizer may be applied with a backpack sprayer or spray rig.
How to Use
- Step 1: Consult rates written on the Peters Professional 20-20-20 General Purpose Fertilizer as ppm N levels and application equipment will vary. Apply 1 tsp of Peters Professional 20-20-20 General Purpose Fertilizer with 1 gallon of water for a 238 ppm N. For a 357 ppm N, use 1 tbsp of product with 2 gallons of water. For a 457 ppm N, apply 1 cup of product in 25 gallons of water.
- Step 2: Fill the sprayer with half the amount needed, then add measured Peters Professional 20-20-20 General Purpose Fertilizer. Pour the remaining half of the water into the spray tank and agitate until the granules have dissolved.
- Step 3: Spray the Peters Professional 20-20-20 General Purpose Fertilizer mixture to the top and bottom of foliage leaves until wet, but not to the point of runoff.
Where to Use
Apply Peters Professional 20-20-20 General Purpose Fertilizer to ornamental crops in growing media.
When to Use
Use Peters Professional 20-20-20 General Purpose Fertilizer when you need to combat excessive pH or reduce micronutrients in growing media containing mineral soil.
Safety Information
Peters Professional 20-20-20 General Purpose Fertilizer is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when applying this product.
Special Considerations
This fertilizer is appropriate for water types 2, 3, and 4 as a drip, drench, or foliar feed.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions * = not registered** = restricted use | 25 Pound: VT** |
| Brand | ICL SPECIALTY FERTILIZER |
| Keith's Pro Tips | "Soil is often heavier than other media, so you will need to replenish the soil to increase air and nutrient flow occasionally. Otherwise, compacted soil can risk injuries or death to foliage." |
| Product Drawbacks | Peters Professional 20-20-20 General Purpose Fertilizer is toxic to ruminant animals. |
| Application Equipment | Backpack Sprayer, Spray Rig |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Nitrogen 20%, Phosphate 20%, Soluble potash 20%, Magnesium 0.05%, Boron 0.0125%, Copper 0.0125%, Iron 0.05%, Manganese 0.025%, Molybdenum 0.005%, and Zinc 0.025% |
| Product Type | Fertilizer |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | Apply 1 tsp of Peters Professional 20-20-20 General Purpose Fertilizer with 1 gallon of water for a 238 ppm N. For a 357 ppm N, use 1 tbsp of product with 2 gallons of water. For a 457 ppm N, apply 1 cup of product in 25 gallons of water. |
| Shelf Life | Peters Professional 20-20-20 General Purpose Fertilizer will last for 3 years when stored in a clean, cool, dry place. |
| Yield | 25 lbs. of Peters Professional 20-20-20 General Purpose Fertilizer will cover a wide range of ornamentals. |
| Use Sites | Outdoors |
| Time to Kill | Peters Professional 20-20-20 General Purpose Fertilizer will last for several weeks. |
| Comparable Products | Peters Peat Lite Special 20-10-20 |
| EPA Registration # | N/A |
| Restricted Use | No |
|---|---|
| Availability | Online |
| Keith's Pro Tip | "Soil is often heavier than other media, so you will need to replenish the soil to increase air and nutrient flow occasionally. Otherwise, compacted soil can risk injuries or death to foliage." |
| Time to Kill | Peters Professional 20-20-20 General Purpose Fertilizer will last for several weeks. |
| Chemical Type | Fertilizer |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Peters Professional 20-20-20 General Purpose Fertilizer is toxic to ruminant animals. |
| Active Ingredient | Nitrogen 20%, Phosphate 20%, Soluble potash 20%, Magnesium 0.05%, Boron 0.0125%, Copper 0.0125%, Iron 0.05%, Manganese 0.025%, Molybdenum 0.005%, and Zinc 0.025% |
| Application Equipment | Backpack Sprayer, Spray Rig |
| Mix Rate | Apply 1 tsp of Peters Professional 20-20-20 General Purpose Fertilizer with 1 gallon of water for a 238 ppm N. For a 357 ppm N, use 1 tbsp of product with 2 gallons of water. For a 457 ppm N, apply 1 cup of product in 25 gallons of water. |
| Use Sites | Outdoors |
| Yield | 25 lbs. of Peters Professional 20-20-20 General Purpose Fertilizer will cover a wide range of ornamentals. |
| EPA Registration No. | N/A |
| Shelf Life | Peters Professional 20-20-20 General Purpose Fertilizer will last for 3 years when stored in a clean, cool, dry place. |
| Comparable Products | Peters Peat Lite Special 20-10-20 |
| Children or pets? | No |
| Property Characteristics | None |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.