Growing in soil is the most natural cultivation method, but top yields demand more than good earth. You need plant nutrition specifically formulated for the buffering character of soil substrates. Bionova's Soil Supermix was the world's first single-component main fertilizer, launched in 1993 and still one of the most trusted liquid soil fertilizers in professional horticulture today.
All-in-one NPK fertilizer for soil from seedling to harvest
Soil Supermix (NPK 7-3-6) covers the full vegetative and bloom cycle in a single bottle. Its unique blend of chelated trace elements and food-grade minerals is directly absorbed by the plant, giving you precise control from week one until a week before harvest. At a 1:400 concentration ratio it's also one of the most cost-effective plant nutrients on the market, available from 250 ml up to 1000 litres.
For maximum flowering performance, always combine Soil Supermix with PK 13-14 as a bloom booster throughout the flowering period. Pair it with Bionova stimulators like X-cel and The Missing Link to push yield, dry weight, and terpene profiles even further.
Complete your grow setup
Start with the right foundation: our substrates, including the Bio Soilmix, are engineered to work in perfect synergy with the Soil nutrient line. Prefer a fully plant-based approach? Explore our Vegan nutrients 100% animal-free and equally suited for soil cultivation. Growing in a different medium? Check out the Hydro, Coco, or A+B fertilizer lines, each precisely formulated for its substrate.
Why Bionova?
30+ years of Dutch horticultural expertise. Fully transparent formulations, you always know exactly what's in the bottle and why. Every product is designed for the highest possible concentration, so you get more from every millilitre.
- Food-grade minerals for direct plant uptake
- Perfectly pH balanced, no adjustments needed
- Suitable for indoor & outdoor soil growing
- Proven in professional cultivation since 1993
