Green Planet Horti Grow 2.3kg | (8-11-21) + Mg + S + Micronutrients | Premium Dry Fertilizer for Vegetative Stage

What is Green Planet Horti Grow and when should I use it?

Green Planet Horti Grow is a water-soluble dry base fertiliser for the vegetative stage. With an NPK of 8-11-21 plus magnesium, sulphur, and micronutrients, it's built to support lush growth, tight internodes, and strong root development before flowering begins.

Can I use Green Planet Horti Grow in hydro, coco, and soil?

Yes—Horti Grow works in hydroponics, coco coir, and soil. It’s also suitable for DWC, drip, and run-to-waste systems when fully dissolved. For seedlings or clones, start at a lighter dose. It's not recommended for foliar spraying.

How do I mix Green Planet Horti Grow correctly?

Fill your tank with room-temperature water, add Horti Grow slowly while stirring, and fully dissolve it before adding anything else. For dosing or injection systems, prepare separate stock solutions to prevent precipitation. Avoid mixing directly with concentrated calcium products.

How much Green Planet Horti Grow should I use?

The quick-start dose is 0.85 g per litre. That’s 8.5 g for 10 L, or 42.5 g for 50 L. For stock tanks, dissolve about 0.9 kg per US gallon of water. Always use a scale—guessing leads to inconsistent EC and plant stress.

Should I check EC and pH when using Horti Grow?

Yes. EC/PPM helps prevent overfeeding, especially in hydro and coco. Horti Grow is pH stable, but always test your final mix and adjust to your usual target range for the medium you're using.

Does Green Planet Horti Grow help with root and plant development?

Yes—it supports healthy roots, strong stems, and vigorous veg growth. While it includes magnesium, it doesn't replace Cal-Mag in every setup. You can use it with Cal-Mag, microbes, or additives—just avoid combining concentrates before dilution.

Can Green Planet Horti Grow cause nutrient burn or lockout?

Yes, if overapplied. Signs include burnt leaf tips, dark or shiny leaves, and slowed growth. Underfeeding shows as pale or weak growth. Track EC, increase gradually, and avoid stacking products too aggressively.

How often should I feed Horti Grow, and when do I switch to bloom nutrients?

Hydro and coco benefit from consistent feeding; soil may need lighter, less frequent applications. Once your plant transitions to flowering, switch to a bloom base to match its changing nutrient needs.

Is Green Planet Horti Grow clean and safe for irrigation systems?

Yes—it's formulated without fillers or sediment, making it clean for drippers and reservoirs. Fully dissolve it before use to avoid clogs or residue in lines or filters.

How should I store Green Planet Horti Grow?

Store it tightly sealed in a cool, dry place. Moisture causes clumping and can affect solubility. If it does clump, break it up before mixing. Properly stored, it has a long shelf life.

Is Green Planet Horti Grow safe around pets and kids?

Yes—when handled responsibly. Keep it out of reach, avoid inhaling dust, and wash hands after use. Like any fertiliser, it should be stored securely and away from food areas.

What should I do if I spill Green Planet Horti Grow?

Sweep up dry spills gently and wipe the area with water. Avoid creating dust clouds and don’t leave it sitting on damp surfaces, where it can form a slippery or salty residue.

Does Green Planet Horti Grow expire or go bad?

Dry fertilisers like Horti Grow don’t expire quickly. The main issue is moisture—if exposed, it can clump or harden. Store it properly to maintain flow and solubility over time.

What’s the most common beginner mistake with Horti Grow?

Going in too strong, skipping EC or pH checks, and mixing incorrectly. It’s a concentrated product, so starting low, measuring properly, and watching plant response helps avoid issues.

What’s the simplest way to start using Horti Grow?

Begin at 0.85 g/L, use room-temp water, mix thoroughly, and measure EC and pH before feeding. Observe your plants for a few days, then adjust your dose if needed. Keep your mixing clean and consistent.