Best Store Bought Soil for Autoflowers

Autoflowering cannabis has revolutionized the world of cannabis cultivation. With their rapid growth cycle and resilience, they’ve become a favorite among novice and experienced growers. However, like all plants, autoflowers have their unique needs, and one of the most crucial is the soil in which they grow. Choosing the Best Store Bought Soil for Autoflowers can make a significant difference in their growth and yield.

In this guide, we’ll delve deep into the best store-bought soil for autoflowers, ensuring your plants get the best start in life.

Key Insights:

  • Autoflowering cannabis plants have different soil needs compared to their photoperiod counterparts.
  • The ideal soil for autoflowers is lightweight, aerated, and has a pH level between 6.2 to 6.5.
  • Homemade soil blends can offer more control over nutrient levels and consistency.
  • Organic soils and super soils provide a rich environment for autoflowers to thrive.
  • Premade soils, like Black Gold Soil and Fox Farm Soil Ocean Forest Mix, are trusted choices among cannabis growers.

Introduction to Autoflowering Cannabis and Soil Needs

Autoflowering cannabis plants are a marvel in the world of botany. Unlike their photoperiod siblings, they don’t rely on light cycles to flower. Instead, they transition based on age, making their growth cycle significantly shorter. This unique trait, while advantageous, also means they have specific requirements, especially regarding soil.

Autoflowers are sensitive plants. They don’t like being overfed and can easily get stressed if the conditions aren’t right. This is why choosing the best store-bought soil for autoflowers is paramount. The right soil can distinguish between a bountiful harvest and a disappointing yield.

The Ideal Soil Conditions for Autoflowers

When it comes to autoflowers, not all soils are created equal. Here’s what to look for in the perfect soil:

  • Lightweight and Aerated: Autoflowers love soil that’s easy to navigate. Lightweight, aerated soils ensure their roots can move quickly, promoting better nutrient absorption.
  • pH Levels: Autoflowers prefer a slightly acidic environment. Aim for a pH level between 6.2 and 6.5. Anything beyond this range can stress your plants.
  • Nutrient Sensitivity: Autoflowers are like the Goldilocks of the cannabis world – they need their nutrients just right. Too much can burn them, while too little can stunt their growth.

Making Your Own Autoflowering Cannabis Soil

While there are plenty of store-bought options available, many growers swear by homemade soil blends. Here’s why:

  • Total Control: Making your own soil means you decide what goes into it. This control can be crucial, especially if you’re growing a specific autoflower strain.
  • Tailored Nutrient Levels: Autoflowers don’t need as many nutrients as photoperiod plants. With a homemade blend, you can ensure they get just the right amount.

Recipe for the Perfect Autoflowering Soil:

  • 3 parts peat moss
  • 3 parts compost
  • 2 parts wet perlite
  • 1 part wet vermiculite

Combine these ingredients, and you’ll have a soil blend that’s light, aerated, and nutrient-rich – perfect for autoflowers!

Organic Soils and Organic Super Soil

For those who’d rather not get their hands dirty making soil, there are organic options available. Brands like Kind Soil offer premixed blends that are rich in essential nutrients.

However, if you’re feeling adventurous, you can make your own organic super soil. Here’s a simple recipe:

  • 1 part compost
  • 1 part peat moss
  • 1 part perlite

This blend offers a nutrient-rich environment, ensuring your autoflowers have everything they need to thrive.

Premade Soils for Autoflowering Cannabis

Autoflowers, with their unique growth patterns, require specific nutrients and soil conditions. While making your own soil gives you control, not everyone has the time or resources. Thankfully, there are premade soils that have been specially formulated for autoflowers.

Black Gold Soil: Features and Benefits

  • Lightweight and Aerated: Perfect for autoflowers’ rapid root growth.
  • Rich in Organic Nutrients: Ensures your plants get the right amount of nutrients without the risk of burning them.
  • Widely Available: This can be found in most gardening stores and online.

Fox Farm Soil Ocean Forest Mix: Features and Benefits

  • The blend of Earthworm Castings, Bat Guano, and Sea-going Fish: A rich mix that provides all the essential nutrients for autoflowers.
  • Good Water Retention: Ensures your plants stay hydrated.
  • Trusted by Growers: A popular choice among cannabis cultivators.


Choosing the best store-bought soil for autoflowers is crucial for a successful harvest. Whether you make your own blend or go for a premade option, ensure the soil is lightweight, aerated, and has the right pH levels. Remember, autoflowers are sensitive plants, and the right soil can make all the difference. Happy growing!


1. What is the best organic blend for autoflowers?

Organic blends rich in earthworm castings, bat guano, and sea-going fish are ideal. Brands like Black Gold and Fox Farm offer such blends.

2. How does the percentage of organic soil affect autoflowering cannabis?

A higher percentage of organic soil ensures better nutrient absorption and promotes healthier root growth. However, it’s essential to ensure the soil is not too dense, as autoflowers prefer lightweight soil.

3. Why is clay not recommended for autoflower cannabis?

Clay soils are heavy and can restrict root growth. Autoflowers, with their rapid growth cycle, require soil that’s easy to navigate, ensuring better nutrient absorption.

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