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Top Vulcan is a product based on selected volcanic ash by Top Crop from Indonesia, serving as a soil amendment, providing various microelements needed for cannabis plants.


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Type and Use

Top Vulcan is a powdered soil amendment of mineral origin. As it is unprocessed, it can be used as a supplement in organic farming. It originates from the volcanic ash of Java, the main island of Indonesia.

Benefits to the Plant

It provides a large quantity of micronutrients, and thanks to its cation exchange capacity, it buffers the action of other types of fertilizers. This prevents overfertilization and stress due to excessive salts.


Calcium (CaO) 2,400 ppm
Copper (Cu) 51 ppm
Magnesium (MgO) 3,900 ppm
Manganese (Mn) 540 ppm
Zinc (Zn) 26 ppm

How to Use and Dosage

Add a thin layer of Top Vulcan to the substrate after transplanting, approximately 1 gram per liter of substrate.

In outdoor grows, you can add 100 grams per square meter.

La Huerta's Opinion

This product is designed to be used together with other substrate improvers by Top Crop such as Nitroguano and Superguano.

It has a neutral pH, making it especially interesting to apply in calcareous soils.

Data sheet

Type of composition
Bio or organic
Growth stage
Type of stimulant or additive
Growth stimulant
Nutrtional complement
Type of grow
Aeroponic grow
Coco grow
Hydroponic grow
Soil grow

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