Premium Coco Substrate Pre-Fertilized Plagron – 70/30 Mix for Explosive Roots

Premium Coco Substrate Pre-Fertilized Plagron is the ultimate growing medium for growers who want the speed of hydroponics with the forgiveness of soil, offering a perfectly balanced mix of 70% coconut fiber and 30% perlite to maximize root oxygenation. Unlike standard coco bricks, this substrate comes treated and enriched, ensuring your plants get a flying start from the very first day.

Why choose this substrate?

Are you tired of dealing with slow growth or the dreaded root rot caused by heavy, compacted substrates? Many growers struggle to find the sweet spot between moisture retention and drainage, often resulting in plants that drown or dry out too quickly.

There is nothing more frustrating than watching your seedlings stall because the medium is inert and you missed the initial feeding window, or having to buy separate bags of perlite and make a mess mixing it yourself. That extra hassle and the risk of nutrient lockout due to unstable pH can ruin your crop before it even really begins.

The solution is Premium Coco Substrate Pre-Fertilized Plagron. It eliminates the guesswork by providing a buffered, stable pH medium with the perfect ratio of perlite already mixed in. It offers the ideal structure for roots to expand rapidly while holding just enough water to keep your plants hydrated without suffocating them.

The perfect balance for your day-to-day growing

Using this substrate changes the game because it combines the best of two worlds. The coconut fiber acts like a sponge, holding moisture and nutrients efficiently, while the perlite creates air pockets that allow the roots to breathe. This means you can water frequently—which drives rapid growth—without the fear of overwatering that you get with soil.

Plus, since it is pre-fertilized with a light nutrient charge, you don't have to worry about immediate deficiencies. It gives you a safety buffer during the first week, making it incredibly forgiving for beginners and a high-performance tool for experts using Hydroponic and Aeroponic Systems or drip irrigation.

How to use Premium Coco Substrate Pre-Fertilized

Getting started with this substrate is straightforward, but following the right steps ensures you get the most out of its airy structure.

1. Preparation: Fill your Indoor and Outdoor Planters with the substrate. Do not compress it; keep it fluffy to maintain aeration.
2. Planting: Place your seeds or rooted clones directly into the medium. The texture is soft enough for delicate roots.
3. First Watering: Water slowly until you see a little runoff. Since it's pre-fertilized, use plain water (pH adjusted) or a very mild root stimulator for the first few days.
4. Nutrition: After the first week, start your feeding schedule using specific Cannabis fertilizers designed for coco coir (A+B formulas are best).
5. Monitoring: Check the pH of your runoff regularly. Ideally, keep it between 5.5 and 6.5 for optimal nutrient uptake.

Key advantages and benefits

• 70/30 Ratio: Because it contains 30% perlite, you get superior drainage, which means faster root expansion and zero risk of waterlogging.
• Pre-Fertilized: Because it contains a starter charge of nutrients, you avoid early yellowing, which means healthier, greener seedlings right out of the gate.
• Buffered & Washed: Because Plagron treats the coco to remove salts and stabilize pH, you avoid nutrient lockouts, which means stress-free growing.
• RHP Certified: Because it meets strict quality standards, you are guaranteed a pathogen-free medium, which means total peace of mind for your crop.
• High Aeration: Because the structure is light and airy, oxygen reaches the root zone easily, which means explosive vegetative growth.

Care and maintenance

To keep this substrate performing at its peak, never let it dry out completely. Coco coir can become hydrophobic (repel water) if it gets bone dry. Keep it consistently moist but not soaking wet. If you are using automatic watering, this mix is perfect as it drains quickly.

If you plan to reuse the substrate for a second cycle, make sure to use enzymes to break down old roots and flush it thoroughly to remove accumulated salts. However, for the absolute best results and hygiene, starting fresh with a new bag is always recommended.

Frequently Asked Questions

How long do the nutrients in the substrate last?

The pre-fertilization is designed to support the plant for approximately the first week of growth. After that, you should start adding liquid fertilizers with every watering.

Do I need to wash or buffer it before use?

No, Plagron has already washed and buffered this substrate. It is ready to use straight from the bag, saving you time and effort.

Can I use soil fertilizers with this mix?

While you can, it is highly recommended to use nutrients specifically formulated for Coco. Coco coir has different cation exchange properties than soil, and specific fertilizers prevent Calcium and Magnesium deficiencies.

Personal Experience of Pevgrow’s CEO (Alan)

I've always been a fan of mixing perlite with coco, but honestly, mixing it by hand is a dusty mess and hard to get consistent. This Plagron mix is a lifesaver because the 70/30 ratio is spot on. I've used it for autoflowers, and the root speed is incredible—the plants just explode in size during the first few weeks because the roots encounter zero resistance.

One tip from my experience: even though it's pre-fertilized, don't get complacent. Start introducing your root stimulator early, and by day 7, be ready with your grow nutrients. It drains fast, so if you're hand watering, you might need to water a bit more often than with pure soil, but the yield increase is totally worth it.