Complex fertilizer for rhododendrons and hydrangeas NPK (8-11-22)

Balanced mineral fertilizer in granules with microelements for acid-loving plants: erica, heather, rhododendron, azalea, hydrangea, ferns. Does not contain chlorine. 
Complex mineral fertilizer with magnesium, sulfur and microelements (boron, copper, manganese) NPK 8-11-22 (Mg, S) (+4.2+29) + microelements (B, Cu, Mn).
Composition: nitrogen (N) – 8% (ammonium nitrogen N-NH4 – 5.4%, nitrate nitrogen N-NO3 – 2.6%), phosphorus pentoxide (P2O5) – 11.5% (including water-soluble – 9.7%), water-soluble potassium oxide (K2O) – 22.9% magnesium oxide (MgO) – 4.2%, sulfur trioxide (SO3) – 29%, boron (B) – 0.05%, copper (Cu) – 0.05%, manganese (Mn) – 0.25%.
Recommendations for fertilizer application.
Local application directly into the soil: III-VIII.
The fertilizer is applied to the soil before spring planting and 3 times during the growing season: in the spring at the beginning of intensive growth, before flowering and during berry ripening.
Water the soil after you have finished applying fertilizer. Fertilize an area equal to the projection of the plant crown.
Fertilizer application rates:
* Vaccinium family berries - 3 times 30 g / m2 at a time (in April, May and June)
* young rhododendrons, azaleas, hydrangeas and ferns - 30-50 g / m2 (mature plants - up to 80 g / m2)
* plants of the heather family Ericaceae - 30 g / m2.
If stored in a dry place, protected from direct sunlight, the shelf life of the fertilizer is unlimited.