Heavy Mix 50 L Substrate Top Crop

HEAVY MIX 50 L TOP CROP - COMPLETE SUBSTRATE FOR VEGETATIVE GROWTH

Heavy Mix 50 L by Top Crop is a complete professional substrate designed to give plants a rich, stable and well-aerated base during vegetative growth. Its blend includes coconut fibre, blonde sphagnum peat and black sphagnum peat, creating a ready-to-use growing medium with good water retention and strong support for root development.

This substrate is ideal for growers looking for a soil mix already enriched with high-quality nutrients. The presence of expanded clay, lava flour, bat guano and leonardite improves the physical structure of the medium and supports gradual nutrition. Its specific particle size helps retain the correct level of moisture without causing excessive waterlogging. This allows roots to breathe better and absorb water and nutrients more efficiently.

Heavy Mix Top Crop 50 L is suitable for pot cultivation, transplanting and crops that need a fertile, balanced and well-draining substrate. Its composition helps reduce soil compaction and promotes more even plant development. It is a practical choice for growers who want to start with a rich substrate that remains simple to manage.

MAIN FEATURES HEAVY MIX TOP CROP 50 L

1. Complete substrate: made with selected raw materials to support vegetative growth.
2. Strong root structure: the blend of peat, coconut fibre and expanded clay supports air, drainage and stability.
3. Integrated nutrition: contains NPK fertiliser with calcium, magnesium and micronutrients.
4. Natural support: bat guano, leonardite and crushed lava improve substrate fertility.
5. Good water retention: the specific grain size helps keep the right moisture level without making the medium heavy.

COMPOSITION:

1. Coconut fibre: improves aeration, lightness and water management.
2. Blonde sphagnum peat H2-H4: supports water retention and substrate structure.
3. Black sphagnum peat H6-H7: improves soil stability and organic matter availability.
4. Expanded clay 0-4 mm: supports drainage and reduces the risk of compaction.
5. Mixed NPK Ca-Mg fertiliser with micronutrients: included at 3 g/L.
6. Leonardite: included at 2 g/L, useful for improving the agronomic quality of the substrate.
7. Bat guano: included at 1.2 g/L, a natural organic source.
8. Crushed volcanic gravel: included at 0.6 g/L, useful for structure and drainage.

PHYSICAL AND CHEMICAL CHARACTERISTICS:

1. Organic matter on dry matter: 66.1%.
2. Electrical conductivity in water: EC 800 µS/cm at 25°C, ratio 1:5 V/V.
3. Apparent dry density: 171 g MS/L.
4. pH in water: 6.7, ratio 1:5 V/V.
5. Class: Class A substrate, with heavy metal content below the authorised limits for this classification.

INSTRUCTIONS FOR USE:

1. Preparation: fill the pot with Heavy Mix Top Crop 50 L without pressing the substrate too much.
2. Transplanting: place the plant carefully, cover the roots well and press the medium lightly.
3. First watering: water evenly, avoiding standing water in the saucer.
4. First irrigations: do not use intensive fertilisation during the first few waterings, as the substrate is already enriched.
5. Later management: add fertilisers only when the plant shows a higher nutritional demand.

WHY CHOOSE HEAVY MIX TOP CROP 50 L

Choosing Heavy Mix Top Crop 50 L means using a rich, technical and ready-to-use substrate designed to support the early stages of plant development. The blend combines organic, mineral and structural components in a balanced way. Coconut fibre improves oxygenation. Peat helps retain water. Expanded clay and volcanic gravel improve drainage. Guano and leonardite complete the formula with natural support for soil vitality.

This product stands out from many common soils because it offers a more complete structure and built-in initial nutrition. It is especially useful for growers who want to reduce mistakes during the first cultivation stages while keeping good control over moisture, oxygen and nutrient availability. Compliant with the provisions of Royal Decree 865/2010 of 2 July on growing media, Heavy Mix Top Crop 50 L is a reliable solution for high-quality professional and hobby cultivation.