• Future Harvest Holland Secret Grow - 23 Litre
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Product benefits

  • All-Stage Support
  • Complete Nutrition
  • Stronger Structure
  • Growth Support
  • Bloom Support
  • pH Buffered
  • Clean Formula
  • Micronutrient Support

This product may offer additional benefits beyond those listed.

Frequently purchased together

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Official Reseller

Provision Gardens is an official reseller of this brand.

Our inventory is sourced directly from the manufacturer and/or authorized distribution partners. We do not sell used items or unverified/old stock. This helps ensure product authenticity, freshness, and the high standard you expect.

Future Harvest Holland Secret Grow - 23 litres

Vegetative Stage Flowering Stage Indoor Outdoor Regular Watering Watering Systems Hydroponics Coco Coir Safe Soil Soilless
$138.76
$138.76
Frais d'expédition calculés à l'étape de paiement.

OTHER AVAILABLE SIZES / MODELS:

Store Availability
In-Store Pickup Only

Manufacturer Recommended Products

Future Harvest Holland Secret Bloom - 23 Litre
Future Harvest Holland Secret Bloom - 23 litres
$138.76
Future Harvest Holland Secret Micro - 23 Litre
Future Harvest Holland Secret Micro - 23 litres
$157.62
Ces produits recommandés par le fabricant sont conçus pour être utilisés avec ce produit afin de garantir des performances optimales et les meilleurs résultats. Dans les systèmes à composants multiples, tous les composants recommandés doivent être utilisés ensemble comme indiqué pour garantir une utilisation efficace.

Product benefits

  • All-Stage Support
  • Complete Nutrition
  • Stronger Structure
  • Growth Support
  • Bloom Support
  • pH Buffered
  • Clean Formula
  • Micronutrient Support

This product may offer additional benefits beyond those listed.

Description
Description
Future Harvest Holland Secret Bloom, Grow, Micro est un système d'engrais de base en trois parties pour une nutrition végétale complète tout au long du cycle de croissance, du début de la croissance à la floraison. C'est une gamme d'engrais en trois parties conçue pour que votre nutrition de base reste simple et cohérente tout en répondant aux besoins spécifiques à chaque étape du développement des plantes.

Holland Secret est conçu autour de trois liquides coordonnés qui agissent en harmonie pour créer un environnement nutritif idéal pour les plantes. Future Harvest positionne cette gamme comme compatible avec n'importe quel substrat de culture, y compris la terre, la fibre de coco et l'hydroponie, ce qui en fait un choix d'engrais de base pratique pour un large éventail de jardins. Il est également conçu pour les systèmes d'alimentation goutte à goutte, hydroponiques et d'irrigation, ce qui le rend bien adapté aux cultivateurs qui souhaitent une base fiable sur différentes configurations sans changer de produits.

Chaque partie a un rôle clair dans la gamme. Holland Secret Micro est décrit comme le point de départ de la nutrition végétale et se concentre sur les micronutriments essentiels du semis à la maturité, favorisant un développement fort et sain à chaque étape. Holland Secret Grow est décrit comme essentiel pendant la phase végétative, avec un accent sur le développement des feuilles et des tiges pour encourager une croissance luxuriante et vibrante à mesure que les plantes se structurent. Holland Secret Bloom complète le système en tant que booster de floraison adapté à la phase de floraison, favorisant des floraisons abondantes et saines lorsque les plantes entrent dans leur phase reproductive.

Pour les acheteurs qui souhaitent des informations rapides, le NPK du système est indiqué par Future Harvest comme suit : Micro (5-0-2), Grow (2-1-7) et Bloom (0-6-4). Cette répartition prend en charge une nutrition adaptée à chaque étape tout en gardant l'approche globale simple : un apport fondamental en micronutriments via Micro, une focalisation sur la croissance végétative via Grow, et un soutien à la floraison via Bloom.

Future Harvest met également en avant les avantages pratiques de la formulation pour une fiabilité au quotidien. La gamme Holland Secret est décrite comme étant sans sédiments et sans urée, ce qui favorise des performances plus propres dans les systèmes où la cohérence est importante. Elle est également décrite comme étant à pH équilibré pour une facilité d'utilisation, ce qui simplifie la gestion de la nutrition de routine pendant que vous vous concentrez sur les performances des plantes.

Future Harvest Holland Secret Bloom, Grow, Micro convient aux cultivateurs qui souhaitent un système d'engrais de base en trois parties avec les avantages d'une formulation à pH équilibré, sans sédiments et sans urée, une grande flexibilité d'utilisation sur la terre, la fibre de coco et l'hydroponie, et un soutien clair pour la phase végétative et la phase de floraison dans une seule gamme nutritive cohérente.

Avantages du produit : Stade végétatif ; Stade de floraison ; Intérieur ; Extérieur ; Arrosage régulier ; Systèmes d'arrosage ; Hydroponie ; Compatible fibre de coco ; Terre ; Sans sol ; Soutien toutes étapes ; Nutrition complète ; Structure plus forte ; Soutien à la croissance ; Soutien à la floraison ; pH équilibré ; Formule propre ; Soutien en micronutriments.

Analyse garantie : Azote total (N) : 2,0 % ; Azote ammoniacal (N) : 0,3 % ; Azote nitrique (N) : 1,7 % ; Phosphate disponible (P2O5) : 1,0 % ; Potasse soluble (K2O) : 7,0 % ; Soufre (S) : 1,0 %.

Dérivé de : Phosphate monobasique de potassium ; Sulfate de magnésium ; Nitrate de potassium ; Sulfate d'ammonium.

How To Use

How to Use Future Harvest Holland Secret Grow - 23 litres

Step-by-step mixing and feeding instructions for Future Harvest Holland Secret Grow - 23 litres.

Mixing & preparation

Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Future Harvest Holland Secret Grow - 23 litres well before every use. Using the feeding schedule below, measure the recommended dose and add it directly to the water while stirring. Allow the solution to mix fully before adding any other fertilizers, additives, or supplements.

Always add nutrients to water — not the other way around. Mix thoroughly between products to ensure an even, stable nutrient solution.

Week-by-week feeding schedule

Vegetative stage — Grow

  • Week 1: mix 2.64 ml per litre of water or nutrient solution.
  • Week 2: mix 3.17 ml per litre of water or nutrient solution.
  • Week 3: mix 3.96 ml per litre of water or nutrient solution.
  • Week 4: mix 4.49 ml per litre of water or nutrient solution.

Flowering stage — Grow

  • Week 1: mix 1.32 ml per litre of water or nutrient solution.
  • Week 2: mix 1.06 ml per litre of water or nutrient solution.
  • Week 3: mix 0.79 ml per litre of water or nutrient solution.
  • Week 4: mix 0.53 ml per litre of water or nutrient solution.
  • Week 5: mix 0.53 ml per litre of water or nutrient solution.
  • Week 6: mix 0.53 ml per litre of water or nutrient solution.
  • Week 7: mix 0.26 ml per litre of water or nutrient solution.
  • Week 8: mix 0.26 ml per litre of water or nutrient solution.

Vegetative stage — Grow

  • Week 1: mix 2.64 ml per litre of water or nutrient solution.
  • Week 2: mix 3.17 ml per litre of water or nutrient solution.
  • Week 3: mix 3.7 ml per litre of water or nutrient solution.
  • Week 4: mix 3.7 ml per litre of water or nutrient solution.

Flowering stage — Grow

  • Week 1: mix 0.79 ml per litre of water or nutrient solution.
  • Week 2: mix 0.79 ml per litre of water or nutrient solution.
  • Week 3: mix 0.79 ml per litre of water or nutrient solution.
  • Week 4: mix 0.79 ml per litre of water or nutrient solution.
  • Week 5: mix 0.79 ml per litre of water or nutrient solution.
  • Week 6: mix 0.53 ml per litre of water or nutrient solution.
  • Week 7: mix 0.26 ml per litre of water or nutrient solution.
  • Week 8: mix 0.26 ml per litre of water or nutrient solution.
Tips for best results
  • Maintain pH and EC/ppm within the range recommended for your growing medium and crop.
  • Use fresh nutrient solution whenever possible and avoid leaving mixed solution stagnant for long periods.
  • Store nutrients in a cool, dark place away from direct sunlight and extreme temperatures.
  • Keep bottles tightly sealed when not in use to reduce air exposure and preserve product quality.
  • Use clean measuring tools and regularly rinse or clean your reservoir, lines, and irrigation equipment.
Common mistakes to avoid
  • Do not mix different nutrients or additives together in concentrated form before adding them to water.
  • Do not exceed the recommended dosage unless you are following a tested, crop-specific feeding plan.
  • Do not skip pH or EC/ppm checks when growing in hydroponic or soilless systems.
  • Do not allow the nutrient solution to freeze or overheat, as this can damage the formulation.
  • Do not ignore the directions on the product label for your specific crop, growth stage, and system type.

Warnings & Safety
Important – Safety Information

This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.

General Safety Precautions

Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.

Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.

First Aid – Skin Contact

IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.

First Aid – Eye Contact

IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.

First Aid – Ingestion

IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.

First aid – Inhalation

IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.

Storage And Handling

Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.

Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.

Important – Medical

If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.

Guaranteed Minimum Analysis
Total Nitrogen (N) 2.0%
Ammoniacal Nitrogen (N) 0.3%
Nitrate Nitrogen (N) 1.7%
Available Phosphate (P2O5) 1.0%
Soluble Potash (K2O) 7.0%
Sulfur (S) 1.0%

Derived From
Potassium Phosphate Monobasic
Magnesium Sulfate
Potassium Nitrate
Ammonium Sulfate

Frequently Asked Questions
Why is total nitrogen (N) important for plant growth, and what makes it different from other nutrients?

Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.

Read the full guide

What Is ammoniacal nitrogen (N) and why do plants need It?

Ammoniacal Nitrogen (N) is a plant-available form of ammonium (NH₄⁺) that provides a steady, gentle source of nitrogen for healthy green growth. Unlike fast-release nitrogen types, ammoniacal nitrogen feeds plants slowly, helps stabilize root-zone pH, and works well in cooler temperatures. It is commonly used during early vegetative growth because it supports strong leaf development without burning young roots. If plants show pale leaves, slow growth, or weak stems, they may need more available ammoniacal nitrogen.

Read the full guide

What does nitrate nitrogen (N) do for plants?

Nitrate Nitrogen provides a stable, easy-to-absorb form of nitrogen that supports steady growth, strong foliage, and reliable plant development without sudden nutrient swings.

Read the full guide

What does available phosphate (P₂O₅) do for plant growth?

Available Phosphate (P₂O₅) supports root development, energy transfer, and early structural growth by providing a form of phosphorus that plants can absorb and use quickly.

Read the full guide

Why is soluble potash (K2O) important for plants?

Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.

Read the full guide

Why is sulfur (S) important for plant growth?

Sulfur is important because plants need it to build key amino acids and proteins that drive real growth, strong structure, and efficient use of nitrogen, making it uniquely different from “look-alike” nutrients that may change leaf color without supporting the plant’s core building process.

Read the full guide

What makes ammonium sulfate different from other nitrogen sources for plants?

Ammonium sulfate is unique because it delivers fast ammonium nitrogen plus plant-ready sulfate sulfur in one ingredient, and it can gently acidify the root zone over time, which matters for nutrient availability. This makes it especially useful when plants are pale and slow from true nitrogen and sulfur shortage, but it also means overuse can cause salt stress or pH drift faster than many other options.

Read the full guide

What makes potassium phosphate monobasic different from other phosphorus sources for plants?

Potassium phosphate monobasic is unique because it supplies both phosphorus and potassium with no nitrogen while also tending to be mildly acidifying in solution, which can help phosphorus stay available in the root zone. That combination makes it especially useful when plants need energy support and sugar movement for rooting, flowering, or fruit fill without pushing extra leafy growth.

Read the full guide

What does magnesium sulfate do for plants?

Magnesium sulfate supplies magnesium for chlorophyll and sugar movement plus sulfur for protein building, helping plants stay efficient and green during high-demand growth. It’s unique because it adds magnesium without extra nitrogen or calcium, so it corrects magnesium issues with fewer side effects when balance is the real goal.

Read the full guide

Is potassium nitrate better for quick deficiency correction than other potassium sources?

Potassium nitrate is often better for quick correction when the plant needs both potassium and fast nitrate nitrogen, because it dissolves cleanly and is taken up quickly, unlike potassium sources that don’t supply nitrogen. It’s unique because it can restore leaf color and growth momentum while also improving water regulation, but it can backfire if nitrogen is already high or if salt levels are already stressing the roots.

Read the full guide

Safety & Technical Documents

Frequently purchased together

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Nutrient Feed Chart

Vegetative — Week 1

  1. Micro
    —
  2. Grow
    —
  3. Bloom
    —
  4. Calnesium
    —
  5. Super B+
    —
  6. Royal Gold
    —
  7. Plantacillin
    —
  8. Carbo Blast
    —
  9. Prop-O-Gator
    —
  10. Royal Black
    —
  11. Bud Start
    —
  12. Ton O Bud
    —
  13. Bud Boom
    —

Flowering — Week 1

  1. Micro
    —
  2. Grow
    —
  3. Bloom
    —
  4. Calnesium
    —
  5. Super B+
    —
  6. Royal Gold
    —
  7. Plantacillin
    —
  8. Carbo Blast
    —
  9. Prop-O-Gator
    —
  10. Royal Black
    —
  11. Bud Start
    —
  12. Ton O Bud
    —
  13. Bud Boom
    —

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