• Grotek Heavy Bud Pro - 1 Litre
1 2

Product benefits

  • Denser Flowers
  • Finish Quality Support
  • Better Flavor
  • Aroma Boost
  • Soil Biology Support
  • Energy Production Support
  • Multi-Media Ready
  • Multi-System Use

This product may offer additional benefits beyond those listed.

Frequently purchased together

Grotek CA flag

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.

Grotek Heavy Bud Pro - 1 Litre

Flowering Stage Indoor Outdoor Regular Watering Watering Systems Hydroponics Coco Coir Safe Soil Soilless
$27.39
$27.39
Shipping calculated at checkout.
Store Availability
Qualifies for Free Shipping Promotion

Product benefits

  • Denser Flowers
  • Finish Quality Support
  • Better Flavor
  • Aroma Boost
  • Soil Biology Support
  • Energy Production Support
  • Multi-Media Ready
  • Multi-System Use

This product may offer additional benefits beyond those listed.

Description
Grotek Heavy Bud Pro™ is a ripening stage bloom additive built to improve harvest quality in the mid to late stages of floral development. This ripening supplement supports flower density and fruit quality as plants finish.

Heavy Bud Pro™ is built around quality-focused outcomes that show up in the final stretch of flowering. A fusion of ingredients supports improved flavour and aroma, plus better shelf life, when plants are concentrating resources into finishing. The formula is designed to help improve metabolism while supporting sugar content, essential oils, and key metabolites tied to late-stage flower and fruit development.

This product also targets the root-zone side of finishing with benefits that keep the medium performing during the ripening stage. It supports soil biology and provides plant energy, helping maintain a more active growing environment late in bloom. By supporting conditions for improved flower development, it helps promote better fruit set while encouraging increased sugar flow to developing flowers.

Heavy Bud Pro™ contains plant-based sugars to deliver extra energy during rapid flower development. It includes carbohydrates such as fructose, glucose, maltose, and cellulose. The plant-based sugars come from a multistage fermentation process using sugar beet molasses and glucose syrup, which is also associated with nutrients being more readily available. Organic matter from this fermentation process is described as helping improve the physical properties of soil and soilless media.

Heavy Bud Pro™ is suitable for soil, soilless, and water culture systems, with compatible systems listed as soilless (peat/coco). It’s a good fit for growers who want a ripening stage bloom additive that improves harvest quality while supporting soil biology, plant energy, and the late-stage drivers of flavour, aroma, and finish quality.

Product benefits: Flowering Stage; Indoor; Outdoor; Regular Watering; Watering Systems; Hydroponics; Coco Coir Safe; Soil; Soilless; Denser Flowers; Finish Quality Support; Better Flavor; Aroma Boost; Soil Biology Support; Energy Production Support; Multi-Media Ready; Multi-System Use.

Guaranteed analysis: Total Nitrogen (N): 1.0%; Soluble Potash (K2O): 3.0%; Boron (B): 0.1%.

Derived from: Potassium Hydroxide; Fermented Molasses; Boric Acid.

How To Use

How to Use Grotek Heavy Bud Pro - 1 Litre

Step-by-step mixing and feeding instructions for Grotek Heavy Bud Pro - 1 Litre.

Mixing & preparation

Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of Grotek Heavy Bud Pro - 1 Litre 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 — Heavy Bud Pro

  • Week 1: do not use this product during this week of vegetative growth.
  • Week 2: do not use this product during this week of vegetative growth.
  • Week 3: do not use this product during this week of vegetative growth.
  • Week 4: do not use this product during this week of vegetative growth.

Flowering stage — Heavy Bud Pro

  • Week 1: do not use this product during this week of flowering.
  • Week 2: do not use this product during this week of flowering.
  • Week 3: do not use this product during this week of flowering.
  • Week 4: mix 1.0 ml per litre of water or nutrient solution.
  • Week 5: mix 2.0 ml per litre of water or nutrient solution.
  • Week 6: mix 2.0 ml per litre of water or nutrient solution.
  • Week 7: mix 2.0 ml per litre of water or nutrient solution.
  • Week 8: do not use this product during this week of flowering.

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

Warning – 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 and inhalation

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

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: 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) 1.0%
Soluble Potash (K2O) 3.0%
Boron (B) 0.1%

Derived From
Potassium Hydroxide
Fermented Molasses
Boric Acid

Frequently Asked Questions
What makes boric acid important for plants compared to other micronutrients?

Boric acid supplies boron, which plants need in extremely small amounts to build healthy new growth and support flowering and fruit development, but the safe range is very narrow. It’s unique because deficiency shows up first in the newest tissues while excess often burns older leaf edges, so accurate diagnosis and tiny, careful corrections matter more than with most nutrients.

Read the full guide

Why is boron (B) essential for strong plant development, and what makes it different from other micronutrients?

Boron is essential because it stabilizes cell walls, supports root and shoot growth, and regulates sugar movement throughout the plant. What makes boron unique is its limited mobility and extremely narrow range between deficiency and excess, which causes new growth to show symptoms rapidly when levels fall out of balance.

Read the full guide

What does fermented molasses do for plants?

Fermented molasses mainly feeds and activates beneficial microbes in the root zone, helping them cycle nutrients into plant-available forms and improving overall uptake and vigor. It’s different from plain sugars because fermentation pre-processes it, so it can stimulate biology faster, but overuse can reduce root-zone oxygen and mimic nutrient deficiencies.

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 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

Is potassium hydroxide just a potassium fertilizer?

No, potassium hydroxide is mainly a strong pH-raising ingredient that changes how nutrients behave and how roots can access them, and its potassium addition is usually secondary. It’s important because stable pH prevents false deficiency symptoms and uptake stress, and it’s unique from other potassium sources because it’s used for acidity control rather than primarily for plant nutrition.

Read the full guide

Safety & Technical Documents

Frequently purchased together

View full details
Nutrient Feed Chart

Vegetative — Heavy Bud Pro

Flowering — Heavy Bud Pro

Product Comparison