Plagron Royalmix - Premium Organic Pre-Fertilized Substrate

🌱 Type: Organic
Nutrients come from natural sources (like guano, worm castings, or plant matter) and are broken down slowly by soil microbes before your plant can use them. This makes it very hard to overfeed or burn roots, and it builds long-term soil life over time. The tradeoff: it acts more slowly than mineral feeds, and nutrient levels can vary slightly batch to batch since it's a natural product rather than a lab-blended formula.

Grow organically, from the ground up. Plagron Royalmix is Plagron's premium, organic pre-fertilized substrate — a rich blend of carefully selected peat, perlite, and unique Plagron worm castings that gives your plants everything they need for up to six weeks of vigorous, natural growth.

Why Growers Choose Plagron Royalmix

Six Weeks of Organic Pre-Fertilization
Royalmix comes richly charged with organic, time-released fertilizer (NPK 5.5-11-5.5) that feeds your plants for up to six weeks. Because it's so heavily fertilized, we recommend flushing with water before use if potting very young plants, or waiting 1-2 weeks before transplanting.

Genuinely Airy, High-Oxygen Structure
A high percentage of perlite gives Royalmix a lightness and oxygen level that's a genuine hallmark of Plagron's substrates — not just good drainage on paper, but a structure that stays airy and well-oxygenated even while holding plenty of moisture from the worm castings. That combination of frequent-watering tolerance and strong drainage is exactly what suits regular fertigation or drip-feed routines, where the soil needs to accept water often without ever staying waterlogged.

Built for Root Development & Drainage
A carefully selected blend of peat varieties and a high percentage of perlite creates an airy, oxygen-rich structure. Roots get more room to develop, uptake of nutrients improves, and the risk of over-watering drops thanks to excellent drainage.

Genuinely Organic
Royalmix is suitable for organic cultivation, good for people, animals, and the environment. Rich worm humus supports vibrant soil life, helping your plants grow and flower naturally — which shows through in the quality of the final result.

Best For Heavy Feeders, Not Rot-Prone Aroids

Worth being upfront about: this is a peat-heavy, richly-charged soil, which is exactly the wrong combination for Monstera, Alocasia, Philodendron, and other rot-prone Aroids that want fast-draining, low-EC conditions — that's what a chunky coco/perlite mix is for. Royalmix earns its keep instead with plants that genuinely want to feed hard for weeks on end, and with frequent, regular watering routines thanks to its airy structure:

• Patio & Container Edibles: Tomatoes, chillies, peppers, and other heavy-feeding crops that benefit from a sustained, rich organic charge and tolerate frequent watering well.
• Established, Robust Houseplants: Pothos, Spider Plants, mature Peace Lilies, and Rubber Plants that are settled in and ready to feed heavily, rather than delicate new cuttings.
• General Garden Containers: Bedding plants and patio pots that want a strong, natural start without needing supplementary feed for weeks.

If you're repotting a delicate cutting or a rot-prone Aroid, this isn't the right bag — but for a hungry tomato plant, an established Pothos, or any container you're watering on a regular fertigation-style schedule, it's a genuinely strong, natural choice.

Pairs Perfectly With Organic Liquid Feeds
Once the initial six-week charge tapers off, Royalmix responds beautifully to organic liquid feeding programmes for continued strong growth and flowering.

Trusted, Premium Quality
Royalmix is Plagron's flagship, premium substrate — rated 4.7/5 by growers for consistent, high-quality results.

📦 Please Note: Sample, 1L, 5L, 10L, and 20L sizes are carefully decanted from original manufacturer packaging into secure, unbranded packaging to offer flexible quantities for every project size.

Ideal For: Organic growers wanting a strong, natural start; heavy-feeding edibles and flowering plants; regular fertigation or drip-feed watering routines; anyone who wants weeks of worry-free feeding before needing to introduce their own nutrient programme.