Browse Products by Technology

Browse Products by Market

"Grotek, a greenstar Plant Products brand, has been providing growers with quality science and exceptional results for over 20 years. Our high-performance products have earned the trust of both hobby and commercial growers worldwide. Grotek has been an industry pioneer, combining key organic extracts with mineral fertilizers, giving growers the opportunity to vastly improving harvest quality.

​

To cultivate mutually beneficial long-term relationships built on trust, quality horticultural products, and world-class service. Our mission is to have our exceptional team empowered to make continuous improvements so that we become the industry leader in our areas of the horticultural industry. We strive to deliver strong financial performance, safe environmental practices, and effective corporate governance"

Privacy

Terms & Conditions

Terms of Sale

Cookie Policy

GROWTH MAX™ Kelp has long been known as an incredible natural fertilizer. GrowthMax™ is a highly concentrated, cold-processed kelp rich in organic compounds and minerals. This product helps plants in all stages to achieve their maximum potential. The carbohydrates found in kelp also help support soil microorganisms, which in turn provide key compounds directly to plant roots. GrowthMax™ is a must in any garden.

GROWTH MAX

Biofuse™ is a water-soluble inoculant containing microorganisms that come to life when applied to soil. These beneficial microbes colonize the soil mmediately surrounding plant roots, adding biodiversity that is often lacking in soilless environments.

BIOFUSE

Black Pearl™ is more than just high-quality charcoal. It is ladened with high-grade ingredients like biochar, volcanic rock dust, low molecular weight humates, and kelp. The harmony between ingredients in the soil provide a dramatic boost to crops when added to any nutrient program.

BLACK PEARL

CARBO-MAX™ is Simple sugars are a great way to impact the root zone of plants and provide the energy required to produce a quality harvest. Carbo-Max™ is based on simple sugars that provide a rapid energy source for soil organisms and plants, which enhances the metabolism of minerals to positively impact the ripening stage. Use throughout the blooming cycle with every fertilizer application/nutrient change.

CARBO-MAX

Growth Booster™ is a fully soluble, high nitrogen and phosphorus fertilizer for vigorous vegetative growth. Supplementing your existing fertility program with Growth Booster ensures a strong crop with improved leaf, shoot, and root development. Start applying Growth Booster when the crop transitions from seedling into the phase of rapid, vegetative growth. Growth Booster is ideal for vegetables, ornamentals and medicinal plant production.

GROWTH BOOSTER

Fish Plus™ is an all-purpose, liquid fish-based fertilizer blend, producing great results on everything you grow. An enzymatically digested product to ensure the highest quality nutrients and organic acids. This formula works well with plants that prefer acidic soil and nutrients.

FISH PLUS

BUD FUEL™ is nutrients in this formula help support flower development and overall root structure. Using during pre-flower and through early bloom development can help each flowering site grow and produce a more uniform fruit set. Bud Fuel™ is recommended for use on all annual flowers, vegetables, herbs, containers, and hanging baskets.

BUD FUEL

Light Mix is a professional growing medium for potted plants. High-quality peat, perlite, and a highly effective combination of premium fertilizer and additional micronutrients are the basis for this professional mixture. Grotek Light Mix is a ready-to-use, all-round mixture that provides for healthy growth and a plentiful harvest.

LIGHT MIX

CORE™ the heart of our line is the essential NPK that provides a foundation for our multi-product Grotek Green Line. Core™ is based on plant matter, which not only provides key nutrients but also plant and mineral derived metabolites. This formula can be used to support beneficial soil biology in the rhizosphere, increasing production of substances known to benefit plant growth. Just like the rest of the Grotek Green Line, Core is suitable for all types of growing from gardens to water-based hydroponic systems.

CORE

GROWTH MAX™

GROWTH BOOSTER™

CARBO-MAX™

FISH PLUS™

Cal-Max™ works to charge soilless media and bring plants back from common minor nutrient deficiencies resulting from nutrient imbalance, rapid growth, or overly humid conditions. A must for growers using coir based soils. Available nitrogen fuels chlorophyll and protein production to quickly re-green starved plants. Chelated iron adds more deficiency fighting power for lush green growth. Added calcium helps to improve plant vigor and assist in times of peak growth. Apply as a foliar spray for fastest recovery from nutrient deficiencies. Excellent for pre-charging coco coir.

CAL-MAX™

CORE™

BUD FUEL™

BIOFUSE™

Light Mix™ is a professional growing medium for potted plants. High-quality peat, perlite, and a highly effective combination of premium fertilizer and additional micronutrients are the basis for this professional mixture. Grotek Light Mix is a ready-to-use, all-round mixture that provides for healthy growth and a plentiful harvest.

LIGHT MIX™

Grotek

"Grotek, a greenstar Plant Products brand, has been providing growers with quality science and exceptional results for over 20 years. Our high-performance products have earned the trust of both hobby 

Grotek - Plant Products - Organic Extracts - Knowde

Website

Identification

Applications & Uses

BLACK PEARL™

Products - Grotek

View all Grotek BLACK PEARL products on Knowde.com. Quickly and easily request a quote, get samples, and download data sheets.

BLACK PEARL - Grotek - Knowde

Job Title

Shipping Terms

Name

and the data associated with it — permanently.

This is a Premium Feature

Changes to filters have not been applied.

Discard changes?

{userCompanyName} notice

In order to join {userCompanyName} on Knowde, you must use your business email address.

Business already on Knowde

{userCompanyName} requires all users on {companyName} to register with their business email address to ensure confidentiality and security.

{userCompanyName} requires registering your business email address

There's only a little ways to go.

Creating an account is free and the only way to directly download documents, order samples, request quotes and use direct messaging.

Quit Sign Up?

Tell us about {userCompanyName}

from concierge@knowde.com

Click the link in the email, or enter the 6-digit code

Verification email sent

Since you’re using a personal email address, we require proof to verify the information you have provided.

Please verify your account

Please go back and enter in an email address that is directly associated with a business.

Knowde is built for businesses

Also, using a personal email for creating your {companyName} account may require additional verification of your company details.

We recommend signing up with a work email address to get faster responses, especially when requesting samples, documents, and more.

Please enter your business email address below.  We’ll send you a confirmation code to quickly verify.

Enter your business email

{companyName} uses Knowde for account management so you can manage all of your sample requests, RFQs, orders and more in one place.

Knowde is for businesses, you may have a hard time receiving responses to your requests if you use a personal email address.

to {email}

We sent an email to {email}

Please click the link to reset your password

Check your email

Create a new password

Password expired

Sign in to {companyName}

Enter a new secure password

Change your password

Enter the email address associated with your account

Reset your password

Enter your password for

Use your Knowde password to sign in:

Please provide additional information to help us verify your company.

Terms and Conditions

Compare multiple products at once and find the best fit for your project needs.

Why is this important?

Enter your password

Unlock your account

Knowde is the world’s biggest marketplace to search for ingredients, polymers, and chemistry. You can:

Welcome to Knowde

View All Products

Cart

Please fix the following before proceeding to payment

An order receipt has been emailed to {email}

Order

This feature is currently unavailable at this screen size.

Payment

Shipping

Checkout

KEEP IN MIND

You will lose any existing chat history by starting a new chat.

Start a new chat?

Compare Products

{price} each for {name}

This document is restricted content.

If you believe you should have permission to this document, please request access.

Restricted Access

It only takes 60 seconds to create an account.

Available {documentType} documents for this product ({counter})

Describe Documents You’d Like to Request

Invalid job title

That’s not the reaction we were expecting.

Page not found - Store for chemicals, polymers and ingredients

Internal Server Error - Store for chemicals, polymers and ingredients

Unexpected error occurred. Please contact us.

Client Side Exception - Store for chemicals, polymers and ingredients

Show products with

Filters

Featured Products

Flavor & Taste Explorer

Flavor Families

Enter your inquiry here, include as much detail as you’re able. *

To submit an inquiry to {companyName}, please fill out the form below and click Submit. They will get back to you as soon as they’re able.

Home Page

Request samples, documents, and quotes directly from suppliers

{companyName} experts - Knowde

Knowde is the first marketplace for chemicals, polymers and ingredients. Our leading-edge digital capabilities connect thousands of suppliers and customers every day.

Chemicals Marketplace - ingredients & raw materials - Knowde

Learn how to take full advantage of the free to use tools that you have unlocked.

Explore the capabilities of the platform and get immediate assistance for your needs with one of our experts.

Schedule a Demo

You’ll meet with Kiana from our Knowde Marketplace Team

Explore the capabilities of the platform and get immediate assistance for your needs.

Learn how you can make the most of the free tools now available to you.

Explore the capabilities of the platform with our dedicated team.

Weekly Webinar

See which others might better fit your needs.

This is just one of {allProducts} products on Knowde.

BROWSE THE MARKETPLACE BY

Knowde for Suppliers

Most popular categories

Gain instant access to our marketplace of over 250,000 chemicals, ingredients and polymers from 8,000 suppliers. Browse, search, and filter to quickly compare products, find information, request documents, order samples, and get quotes directly from suppliers.

Search and filter over 250,000 chemicals, ingredients and polymers, access documents and download starter formulations. Interact with over 8,000 suppliers whose representatives are ready to help. Sign up for a free Knowde Marketplace account today.

Create a free account to gain instant access to our marketplace of over 250,000 products and their documents.

Get new products to market faster with a free Knowde Marketplace account

The fastest way to find the right raw materials for your products

Want to explore more products?

Popular {companyName} Products

Start Order

Get a Quote

1 of {brandProductsCount} products in this brand

This will be used for any follow-up questions so we can best meet your needs

Please fill out the form below to help {companyName} prepare your quote

Your request has been sent to {companyName}

This information will help us get you the right materials.

All Categories

{numberOfResults, plural, one {Brand} other {Brands}}

{numberOfResults, plural, one {Product} other {Products}}

Search Tips

{charactersCounter}/{limitCharacters} Characters

Visit

Your account has been verified. You now have access to the full power of {companyName}

The quantity your business will require annually, if the sample product suits your project's needs.

BLACK PEARL

Grotek Brand

Knowde Brand Summary