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Plagron Grow-Mix with Perlite 50 l
Sending a bag is €12.95 (Belgium) per bag, register on the site to see the shipping costs. Plagron Grow-Mix with Perlite 50 l is a premium pre-fertilised growing medium built from the finest hand-selected peat types, perlite and Plagron's exclusive worm castings. Pre-loaded with a balanced NPK 12-14-24 mineral feed for the first 3 weeks, it delivers a fast, hassle-free start with no additional nutrients required. The perlite addition creates an exceptionally airy structure for optimal root-zone oxygen and rapid establishment. Purpose-built for professional growers targeting consistent, repeatable yields. Order Grow-Mix and grow with confidence in Belgium.
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Plagron Grow-Mix with Perlite 50 l — 3-Week Pre-Fertilised Professional Substrate
Root-zone performance is the single most decisive variable in any cultivation setup. Plagron Grow-Mix with Perlite 50 l addresses this from day one with a precisely engineered blend of premium peat, perlite and Plagron's proprietary worm castings. Explore the full range alongside products like Plagron Coco 50 l to find the substrate that matches your grow style and feeding strategy.
Technical Specifications
Grow-Mix is pre-fertilised for 3 weeks with a refined combination of mineral fertilizers at 1.8 kg/m³ (NPK 12-14-24). pH is stable between 5.7 and 6.7 (1:1.5), with an EC of 1.0–1.7 mS/cm (1:1.5). These parameters are dialled in at production for consistent, repeatable results across every bag.
- Premium selected peat types: homogeneous structure, high water retention and excellent airiness from day one.
- Integrated perlite: enhanced drainage, faster oxygen delivery to roots and prevention of substrate compaction.
- Plagron worm castings: active biological soil life for improved water uptake and root vigour.
- 3-week pre-fertilisation (NPK 12-14-24): zero nutrient input required for the first three weeks.
- Professional-grade repeatability: consistent results run after run, indoors and outdoors.
Feeding Schedule Integration
After the three-week pre-fertilised window, switch to Plagron Terra Grow for the vegetative phase, then transition to Terra Bloom at the onset of flowering. If your plants enter the flowering stage before the end of week three, skip Terra Grow entirely and go straight to Terra Bloom. Plagron additives are designed to stack on top of this base schedule for maximum output.
How Grow-Mix Compares to Other Plagron Substrates
Grow-Mix sits in the middle of the Plagron soil range. It offers more nutritional autonomy than Plagron Light-Mix (1-week pre-fertilised, minimal nutrients) but delivers a shorter pre-fertilisation window than Plagron Bat-Mix. Choose Grow-Mix when you want a solid, nutrient-rich start with professional-level performance and the flexibility to take full control of your feeding program from week four onwards.
Order Plagron Grow-Mix with Perlite 50 l now and benefit from fast delivery across Belgium. A proven substrate trusted by Belgian professional growers for consistent, high-yield results season after season.
When should I start fertilising with Plagron Grow-Mix with Perlite 50 l?
Grow-Mix is pre-fertilised for three weeks, meaning no additional nutrients are needed during that initial period. From week four, begin feeding with Plagron Terra Grow during the vegetative phase. If your plants transition to flowering before the three weeks are up, skip Terra Grow and start Terra Bloom immediately. This makes Grow-Mix one of the most plug-and-play substrates in the Plagron range.
What is the difference between Plagron Grow-Mix and Light-Mix with Perlite?
Grow-Mix is pre-fertilised for three weeks (NPK 12-14-24) and contains worm castings for an active soil biology — ideal for growers who want a hands-off start. Light-Mix is pre-fertilised for just one week at a minimal nutrient load, giving the grower full control of the feeding program from the very start. Choose Grow-Mix for a fast, complete start; choose Light-Mix for maximum feeding precision.
Can I mix extra perlite into Plagron Grow-Mix with Perlite for better drainage?
Yes. Plagron recommends mixing 10–35% additional perlite into any of their soil substrates if you need increased airiness or faster drainage. This is particularly useful in warm grow rooms or for high-frequency watering schedules. Use Plagron Perlite for best compatibility with the existing substrate blend.
Is Plagron Grow-Mix with Perlite 50 l suitable for both indoor and outdoor growing?
Yes, Grow-Mix is a versatile substrate suited for pot cultivation both indoors and outdoors. Its pre-fertilised formula and perlite-enhanced structure make it particularly effective in controlled indoor environments where root-zone aeration is critical, but it also performs excellently in outdoor raised beds and containers where drainage and water retention need to be balanced.