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Peters Professional 21-7-7 Acid Special Fertilizer, 25 lbs.

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Product details

Management number 232558119 Release Date 2026/06/21 List Price $11.70 Model Number 232558119
Category

Peters Professional 21-7-7 Acid Special was designed exclusively for high-acid crops. Offsets high alkalinity water while effectively lowering pH levels in growing media.

N-P-K: 21-7-7

Specifically formulated for acid-loving plants. Provides a rapid correction of high pH conditions; ideal for acid-loving plants in the nursery and landscape. Promotes lush vegetation and better blooms. A favorite for azaleas and rhododendrons! Customizing component for use with a variety of base formulations

Benefits

  • Formulated with extra iron to promote greening
  • Contains NPK, magnesium and micronutrients
  • Developed for peat-based cultures (pot plants, bedding plants and container nursery stock)
  • Exclusive M-77® chelating formula for fast, efficient nutrient uptake

Application Rates

Mix ratios (non-injector)

Fertilizer + Water (gallons) = Approx. N (ppm)

Fertilizer Water (gallons) Approx. N (ppm)
1 tsp. 1 245
1 tbsp. 2 368
1 cup 25 471

Product properties

Potential basicity 1518 lbs. calcium carbonate equivalent per ton
Conductivity (100 ppm N) 0.52 mmhos/cm.
Maximum solubility 4 lbs./gal.

How To Use

  • 1. Consult rate tables printed on bag labels.
  • 2. Verify product analysis, longevity and rate for plants in your production system (for assistance, contact your regional ICL Territory Manager or call the ICL Lab at 877-467-8522).
  • 3. Irrigation frequency and volume should be adjusted during the crop production cycle according to crop type, environmental conditions and desired soluble salt levels.
  • 4. A product trial is recommended before adopting a new fertilizer program or making full-scale changes to standard cultural practices (test several rates on representative plant types).
  • 5. Store in a clean, cool, dry place.

Guranteed Analysis for Peters Professional 21-7-7 Acid Special

N Total Nitrogen
Nitrate nitrogen (N-NO3)
Ammoniacal nitrogen (N-NH4)
21%
10.4%
10.6%
P2O5 Phosphorus Pentoxide 7%
K2O Potassium Oxide 7%
S Sulfur 13%
B Boron 0.0262%
Fe Iron
Iron EDTA (Fe)
0.15%
0.15%
Mn Manganese
Manganese EDTA (Mn)
0.05%
0.05%
Mo Molybdenum 0.01%

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