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ICL SPECIALTY FERTILIZER
Peters Excel 21-5-20 Multi Purpose
Peters Excel 21-5-20 Multi Purpose is an excellent water soluble fertilizer that counters high alkalinity in water types 2, 3, and 4 to serve essential micronutrients to ornamentals.
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Peters Excel 21-5-20 Multi Purpose Product Page
Min : 76.35 - Max : 76.35
Price as of
09/27/25
09/27/25
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See how our pricing compares to other online retailers for this item.
Peters Excel 21-5-20 Multi Purpose, manufactured by ICL Specialty Fertilizer, is a superior all purpose fertilizer formulated with patented technology to deliver a complete range of nutrients while also reducing high alkalinity in irrigation water for container ornamentals.
This excellent water soluble fertilizer contains a pure b (base) formulation with no filler substances to safely treat foliage and is flexible enough to be used with c (customizing) component.
Peters Excel 21-5-20 Multi Purpose is a powerful soil nourishment solution that possesses an M-77 chelating formula for fast and efficient nutrient uptake.
Tools Needed
Peters Excel 21-5-20 Multi Purpose should be used with non-injector equipment like a backpack sprayer or spray rig.
How to Use
- Step 1: Depending on the ppm rate, the application rates will vary so it would be best to refer to the bag label. Apply 1 tsp of Peters Excel 21-5-20 Multi Purpose with 1 gallon of water for a 320 ppm. For a 480 ppm application, use 1 tbsp. of product with 2 gallons of water. For a 614 ppm, apply 1 cup of product in 25 gallons of water. For 252 ppm rate, use 1 lb. of product in 100 gallons of water.
- Step 2: Fill the sprayer with half the amount of water, add measured amount of Peters Excel 21-5-20 Multi Purpose, then add the remaining half of water. Close the spray tank and agitate until the granules have dissolved.
- Step 3: Spray the Peters Excel 21-5-20 Multi Purpose mixture to the top and bottom of plant leaves until wet, but not to the point of runoff.
Where to Use
Apply Peters Excel 21-5-20 Multi Purpose to peat-based cultures (pot plants, bedding plants and container nursery stock.
When to Use
Peters Excel 21-5-20 Multi Purpose can be applied when plants are actively growing or well-established.
Safety Information
Peters Excel 21-5-20 Multi Purpose 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
Peters Excel 21-5-20 Multi Purpose can be mixed with other Peters Excel and Excel pHLow products to create numerous custom formulations.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 25 Pound: VT |
| Brand | ICL SPECIALTY FERTILIZER |
| Keith's Pro Tips | "While Peters Excel 21-5-20 Multi Purpose will replace nutrients, we recommend treating any pest infestations to continue the health of plants." |
| Product Drawbacks | Peters Excel 21-5-20 Multi Purpose residual rate will depend on crop cycle. |
| Application Equipment | Backpack Sprayer, Spray Rig |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Nitrogen 21%, Phosphate 5%, Soluble Potash 20%, Boron 0.0262%, Copper 0.0262%, Iron 0.105%, Manganese 0.0525%, Molybdenum 0.0105%, and Zinc 0.0525% |
| Product Type | Fertilizer |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | Apply 1 tsp of Peters Excel 21-5-20 Multi Purpose with 1 gallon of water for a 320 ppm. For a 480 ppm application, use 1 tbsp. of product with 2 gallons of water. For a 614 ppm, apply 1 cup of product in 25 gallons of water. For 252 ppm rate, use 1 lb. of product in 100 gallons of water. |
| Shelf Life | Peters Excel 21-5-20 Multi Purpose will last up to 3 years when stored in a cool, dry location. |
| Yield | 25 lbs. of Peters Excel 21-5-20 Multi Purpose coverage depends on container size. |
| Use Sites | Outdoors |
| Time to Kill | Peters Excel 21-5-20 Multi Purpose will last up to several weeks. |
| Comparable Products | Peters Excel pHLow 19-11-21 Multi-Purpose with Black Iron |
| EPA Registration # | Not applied |
| Restricted Use | No |
|---|---|
| Availability | Online |
| Keith's Pro Tip | "While Peters Excel 21-5-20 Multi Purpose will replace nutrients, we recommend treating any pest infestations to continue the health of plants." |
| Time to Kill | Peters Excel 21-5-20 Multi Purpose will last up to several weeks. |
| Chemical Type | Fertilizer |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Peters Excel 21-5-20 Multi Purpose residual rate will depend on crop cycle. |
| Active Ingredient | Nitrogen 21%, Phosphate 5%, Soluble Potash 20%, Boron 0.0262%, Copper 0.0262%, Iron 0.105%, Manganese 0.0525%, Molybdenum 0.0105%, and Zinc 0.0525% |
| Application Equipment | Backpack Sprayer, Spray Rig |
| Mix Rate | Apply 1 tsp of Peters Excel 21-5-20 Multi Purpose with 1 gallon of water for a 320 ppm. For a 480 ppm application, use 1 tbsp. of product with 2 gallons of water. For a 614 ppm, apply 1 cup of product in 25 gallons of water. For 252 ppm rate, use 1 lb. of product in 100 gallons of water. |
| Use Sites | Outdoors |
| Yield | 25 lbs. of Peters Excel 21-5-20 Multi Purpose coverage depends on container size. |
| EPA Registration No. | Not applied |
| Shelf Life | Peters Excel 21-5-20 Multi Purpose will last up to 3 years when stored in a cool, dry location. |
| Comparable Products | Peters Excel pHLow 19-11-21 Multi-Purpose with Black Iron |
| 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.