COMPO Expert·Macronutrients
Fully coated controlled-release NPK 12-5-18(+2MgO) with trace elements, releasing over 12 months for potting substrates, ornamentals and P-sensitive crops.
Main advantages
About this product
Basacote High K 12M is a fully polymer-coated, controlled-release NPK fertilizer graded 12-5-18 with 2% MgO and a full set of trace elements. Its potassium-led formula releases nutrients evenly over roughly 12 months, matching plant demand while limiting leaching and salinity. The 2.5-3.5 mm screened granules suit depot mixing into potting soil and substrates, top dressing, or plant-hole placement. It fits flowering ornamentals, container nursery stock and phosphorus-sensitive crops.
At a glance
Nutrient composition
NPK blend
Values are % nutrient by mass. Balanced blend for starter nutrition.
Nitrogen (N)
12%
Vegetative growth, leaf mass
Phosphorus (P₂O₅)
5%
Root development + flowering
Potassium (K₂O)
18%
Hardiness + grain fill
Application
Full specifications
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Questions & answers
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