planting organic cannabis

So, you want prolific yields and pungent, sticky flowers, and you've decided to accomplish this through natural cannabis soil amendments? Congrats!

Whether you need to learn how to add nutrients to new soil, or you're looking to re-amend your existing soil, you are on your way to growing natural, more affordable, and "mother-nature approved" marijuana.

But how much Gaia Green plant food do you need, when should you top-dress your soil, and what are the best products for each stage of cannabis growth?

This article will explore the benefits of using natural potting amendments and how to use Gaia Green's products in your home-cultivation project. 

We also have a video covering this topic on YouTube. Click here.

Why Choose Gaia Green Cannabis Soil Amendments?

Gaia Green soil amendments give you a simple OMRI Organic Certified way of providing the nutrients your plants need to produce the highest quality and biggest yields from your crops (no chemicals or complicated fertilizers necessary).

Gaia Green amendments are designed to increase the microbial activity in your soil to create living soil that nourishes thriving plants.

Increasing biological activity in the soil is highly beneficial to your plant's health, strength, and nutrient uptake, which means the quality and quantity of cannabis increases.

By feeding your plants with high-quality cannabis soil amendments, you will create an environment for optimal performance, which means bigger buds! 

Gaia Green is also dedicated to social and environmental practices based upon ecological responsibility, another great reason we love to recommend this conscious company.

This all-in-one cannabis soil amendment pack includes everything you need to grow healthy and thriving plants.

Our pack includes 10 products, including beneficial microbes from Xtreme Gardening, that work to create a thriving rhizosphere in your plant's rootzone.

Simply mix the amendment into your soil and watch your cannabis plants flourish!

How to Amend Soil for Cannabis with Gaia Green

First, please note—only amend your soil if you are reusing a medium or working with a medium that doesn't contain plant nutrients. These amounts are to be used with Gaia Green Organic dry amendments only.

While non-toxic, we recommend wearing a protective mask and gloves while handling Gaia Green products. Be sure to avoid contact with eyes and skin.

If you are growing in soil that has been previously amended or are unsure of your soil's nutrient levels, start by doing a soil test before adding any cannabis soil amendments.

Gaia Green All Purpose 4-4-4 Organic Cannabis Soil Amendment is a blend of organic nutrients and soil conditioners specifically formulated for high value crops.

It can be used as a soil amendment to enrich the growing medium or as a top dressing. It is suitable for indoor and outdoor cultivation and is ideal for use in organic or sustainable gardens.

Re-Amending Your Growing Medium

When you start growing, the costs can add up quickly—and soil is one of the main expenses. However, re-amending your growing medium using Gaia Green is a great way to help save you some money.

Soil prices range widely, but generally, you could expect to pay $40-50 USD. That might not seem like a huge cost, but buying fresh soil/coco coir can add up with every new grow. If you were to re-amend that medium three times, you'd be saving $120-150.

Instead, you could use this money to buy seeds, a light upgrade, or a new grow tent.

Before reusing and amending your medium with cannabis soil amendments, I recommend removing any big masses of roots in the soil or coco coir. The smaller roots left behind will break down into nutrients for your plants, so don't worry about getting all of them.


You'll also want to break up any clumps in the medium for a smoother mixture. You may want to encourage better drainage by including around 10% - 15% perlite in the growing medium.

Gaia Green Amendment Calculator

Gaia Green Calculator

Gaia Green's Recommendations:

Power Bloom: x tbsp

All Purpose: y tbsp

Nutrient Schedule for Autoflowers

This schedule is for top dressing plants every 3-4 weeks. Double everything for amending new soil.

Vegetative Stage:

70/30 of All Purpose 4-4-4 & Power Bloom 2-8-4; Add 1 tbsp per gallon of medium. 

(Ex. 7 tbsp 4-4-4 & 3 tbsp of 2-8-4 for 10 gallons)

Blooming Stage:

50/50 of All Purpose 4-4-4 & Power Bloom 2-8-4; Add 2 tbsps per gallon of medium. 

(Ex. 10 tbsp of 4-4-4 and 10 tbsp of 2-8-4 for 10 gallons)

If you top dress twice in bloom, use a 70/30 Power Bloom to All Purpose ratio for the second feeding.

Gaia Green Power Bloom is specially formulated to enhance the growth and blooming of flowers and plants. It is made with natural ingredients, free from synthetic chemicals, and OMRI-certified organic.

This product is perfect for gardeners and horticultural enthusiasts who want to promote healthy and vibrant plant growth.

Nutrient Schedule for Typical Strains

This schedule is for top dressing plants every 3-4 weeks. Double everything for amending new soil.

Vegetative Stage:

70/30 of All Purpose 4-4-4 & Power Bloom 2-8-4; Add 1 tbsps per gallon of medium. 

(Ex. 7 tbsp of 4-4-4 and 3 tbsp of 2-8-4 for 10 gallons)

Transitioning Stage:

50/50 of All Purpose 4-4-4 & Power Bloom 2-8-4; Add 1 tbsp per gallon of medium. 

(Ex. 5 tbsp of 4-4-4, 5 tbsp of 2-8-4 for 10 gallons)

Blooming Stage:

70/30 of Power Bloom 2-8-4 & All Purpose 4-4-4; Add 2 tbsps per gallon of growing medium

(Ex. 14 tbsp of 2-8-4 and 6 tbsp of 4-4-4 for 10 gallons)

Who is Gaia Green Suitable For?

Anyone who wants tasty, dense, resin-covered buds and wants to save money while following organic growing practices will love using this natural fertilizer.

If you have new soil without nutrients or want to re-amend your current soil, Gaia Green is an excellent option that will save you money in the long run. You'll also be using an environmentally friendly product based on social responsibility practices.

While many great Gaia Green cannabis soil amendments are available, having the All-Purpose 4-4-4 and Power Bloom 2-8-4 will be the majority of your nutrient needs.

There are many other ways to amend your soil, and the right balance of nutrients will depend on factors like plant genetics and growing medium.

Keep an eye out for more content on using Gaia Green's other products and more tips on creating outstanding growing mediums for your medicine.

Author Biography | Christopher McDonald

Christopher McDonald, founder of Happy Hydro and avid gardening enthusiast, is devoted to revolutionizing sustainable gardening. As an authority in plant care with over 20 years of experience, Christopher balances leading his thriving company with tending to his lush garden. In his free time, he relishes exhilarating backpacking trips, psychedelic journeys, and cherishing moments with his family.




When making my own soil mix I amend at 4tbsp per gal. Top dress at 3tbsp per gal every few weeks.
Gotten away with 3tbsp mix and 2tbsp per gal top dress, but also faced deficiencies in a couple cultivars. I go heavier and might see a little too burn but nothing major. Front loading with 15-20% Wollastonite has had the most immediate beneficial impact on my grows. Love that shit…



What does it mean by adding 1 tablespoon of medium don’t understand medium



Your calculator is off.



Great info. I use similar ferts in New Zealand and needed a detailed guide on using them. Thanks heaps!

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