16-4-8 Root Zone Feeder Packs

Original price was: $30.00.Current price is: $23.99.


Total Nitrogen (N) 16%
0.2% Ammoniacal Nitrogen*
1.8% Nitrate Nitrogen*
2.6% Water Insoluble Nitrogen**
11.0% Urea Nitrogen*
0.4% Other Water Soluble Nitrogen
Available Phosphate (P2O5) 4%
Soluble Potash (K2O) 8%
Calcium (Ca) 2.75%
Magnesium (Mg) 0.75%
Sulfur (S) 1.00%
Iron (Fe) 0.25%
Manganese (Mn) 0.05%


49 in stock

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16-4-8 Root Zone Feeder Packs

SKU 93305 Category


No measuring, no special equipment, no waste. Your plants receive the even feed slow release nutrients over time as needed. The Suståne 16-4-8 Root Zone Feeder Packs feed plants up to 8 months.

Suståne 16-4-8 Root Zone Feeder Paks provide single dose applications of Suståne organic and controlled release fertilizers designed to provide long-lasting plant nutrition in a completely biodegradable paper filter pak. This product is designed to provide a continuous release of nutrients for up to 8 months at 70º F (23º C) soil temperature.

  • For use in all flowers, trees, shrubs and perennials
  • Assures controlled dose applications
  • 50% Suståne® All Natural Compost Based Fertilizer
  • 50% coated 8-month Controlled Release Fertilizers
  • One application per plant per growing season
  • In permeable biodegradable paper filter packets