Osmocote 2w1 Rododendron 300 g

  • Osmocote 2in1 Substral for Rhododendrons and Hydrangeas is a fast and long-acting fertilizer for rhododendrons, azaleas, hydrangeas and acidophilic plants. Visible effects within 7 days! Extra long action up to 6 months!
  • Osmocote 2w1 Rododendron 300 g
Producer: Substral
Product code: 9525
25,00 zł
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Product description


  • fast and long-acting
  • first effects within 7 days
  • extra long action up to 6 months
  • high performance
  • negligible risk of over-fertilization and plant burnout
  • rich in trace elements


Product description:

SUBSTRAL - Osmocote 2in1 fertilizers - is a new generation formulation that provides plants with short- and long-term availability of nutrients. It is a unique blend of slow release coated granules and uncoated fast acting granules.

In the improved technology, Osmocote 2in1 fertilizers not only provide long-lasting effects of up to 6 months, but also immediate results!

Uncoated fertilizer provides the plant with nutrients immediately, and the effects are visible in 7 days.

The coated granules, on the other hand, ensure a constant release of nutrients thanks to the organic resin coating. This protective coating ensures constant fertilization for up to 6 months and no direct contact with the roots, which are then protected against the risk of burns and over-fertilization.

The new formulation of Osmocote 2in1 fertilizers also means greater efficiency and an even greater dose of nutrients.

SUBSTRAL Osmocote 2in1 for Rhododendrons and Hydrangeas is intended for the fertilization of rhododendrons, azaleas, hydrangeas and acidophilic plants.

The fertilizer is released in a small dose daily under the influence of temperature and humidity, and it fertilizes the flowers every day throughout the season (the process is adapted to the growth rate of the flowers). 1 application of Osmocote = 5 applications of normal granules.



Use lower doses for small or sensitive plants. The included measuring cup is 10 g. Use in early spring. After applying the fertilizer, the flowers should be watered abundantly.

The fertilizer contained in the granules is gradually released into the soil under the influence of moisture and temperature of the substrate for up to 6 months.



Dose Handful Spoon
Soil 30-60 g / m2 2.5 3
Pots 15-30 g / bush



Granulated NPK fertilizer (Mg) 20-7-16 (2.5)% (m / m)

with a mixture of micronutrients.

  • Total nitrogen (N) 20%, ammonium 1.7%, amide 16.9%.
  • Phosphorus pentoxide (P2O5) 7.0% soluble in ammonium citrate and in water, including 5.3% in water.
  • Potassium oxide (K2O) 16% dissolved in water.
  • Magnesium (MgO) 2.5%.


  • iron (Fe) 0.18%,
  • manganese (Mn) 0.06%,
  • zinc (Zn) 0.02%,
  • copper (Cu) 0.01%.
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