20 Best Soil For Growing Cannabis Indoors (2022 Updated)

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The best soil for cannabis is a mix of organic matter like compost, peat moss, and coco coir. This mixture provides the perfect balance of drainage and water retention for cannabis roots.

20 Best Soil For Growing Cannabis Indoors

1. Roots Organics Original Potting Soil, 0.75 Cu ft

Roots Organics Original Potting Soil, 0.75 Cu ft

  • 0.75 Cu Ft

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Weight 16.5 oz

2. Miracle-Gro 16 qt Indoor Potting Mix

Miracle-Gro 16 qt Indoor Potting Mix

  • 16 Qt

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Organic No
Product Type Potting Soil
Ideal for Growing Indoor Plant
Feed Duration Up to 6 Months
Bag Capacity/Dry Volume 16 qt

3. Minute Soil – Compressed Coco Coir Fiber Grow Medium – 3 Bricks = 4.5 Gallons of …

Minute Soil - Compressed Coco Coir Fiber Grow Medium - 3 Bricks = 4.5 Gallons of ...

  • Compressed Coco Coir Fiber Grow Medium
  • 3 Bricks = 4.5 Gallons of Potting Soil

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Product Dimensions 7.5 x 6 x 3.5 inches
Is Discontinued By Manufacturer No

4. Coast of Maine Stonington Blend Organic Growers Potting Soil Mix (8 Pack)

Coast of Maine Stonington Blend Organic Growers Potting Soil Mix (8 Pack)

  • 8 Pack

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Ideal For Growing Fruits & Vegetables
Bag Weight (lb.) 40 lb
Organic Yes
Soil Matter Organic
Soil Type Potting

5. Espoma Organic Potting Mix (8 qt)

Espoma Organic Potting Mix (8 qt)

  • 8 Quart

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Product Type Potting Mix
Brand Name Espoma
Ideal for Growing All Purpose
Bag Capacity/Dry Volume 8 qt
Primary Usage Gardening

6. Miracle-Gro Indoor Potting Mix 72776430 6 Quart (2 Pack)

Miracle-Gro Indoor Potting Mix 72776430 6 Quart (2 Pack)

  • Blended for a wide variety of container plants
  • Feeds up to 6 months
  • Designed to be less prone to gnats (Contains no compost or bark, which are known to shelter fungus gnats)
  • Contains coconut coir, which holds and releases water and helps soil easily re-wet

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Style Potting Mix,Bark
Item Volume 6 Quarts
Package Dimensions ‎14.5 x 12.9 x 4.6 inches

7. Sun Gro Horticulture Black Gold Natural & Organic Potting Mix 1 CF

Sun Gro Horticulture Black Gold Natural & Organic Potting Mix 1 CF

  • 1 Cu Ft

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8. Black Gold All Purpose Potting Soil – 16 qt

Black Gold All Purpose Potting Soil - 16 qt

  • 16 Quart

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Organic No
Ideal for Growing All Purpose
Product Type Potting Mix
Feed Duration Up to 6 Months
Indoor or Outdoor Indoor and Outdoor

9. Mother Earth Terracraft Potting Soil 12 Quart

Mother Earth Terracraft Potting Soil 12 Quart

  • 12 Qt

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Product Type Potting Soil
Container Size 12 qt
Brand Name Mother Earth

10. Miracle Grow Potting Mix – 8 qt bag

Miracle Grow Potting Mix - 8 qt bag

  • 8 Qt

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Units in Package 1
Unit Size 4.04 lb
Directions Easy-to-Use Instructions: We recommend wearing gardening gloves when using this or other planting materials. 1. Select a pot with a drain hole. 2. Fill pot about 1/3 full. 3. Loosen root ball, place plant in pot. 4. Add more mix, press lightly. 5. Water, let drain. Lighting: Plants vary in their lighting requirements. Refer to plant tags for specific sun or shade needs. Watering: Let mix dry to the touch between waterings. Do not allow plants to sit in drainage water. Outdoor container plants require frequent watering – as often as once per day in hot, dry conditions. To take the guesswork out of watering try Miracle-Gro Moisture Control potting mix! Repotting: To avoid soil compaction and replenish nutrients, all container plants should be repotted annually with fresh Miracle-Gro Potting Mix.
Ingredients This Product is Formulated from (One or More of the Following: Processed Forest Products, Peat, Coir, and/or Compost), and Sphagnum Peat Moss, Perlite, Fertilizer (See Below), and a Wetting Agent. In California, This Product is Formulated from Processed Forest Products, Sphagnum Peat Moss, Peat, Perlite, Fertilizer (See Below), and a Wetting Agent. In Texas and Idaho, This Product is Formulated with Processed Forest Products, Sphagnum Peat Moss, Peat, Perlite, Compost, Fertilizer (See Below), and a Wetting Agent. In New Hampshire, This Product is Formulated from Sphagnum Peat Moss, Processed Softwood Bark, Processed Wood Products, Perlite, Fertilizer (See Below), and a Wetting Agent. In Georgia, This Product is Formulated from (45-55%) Processed Forest Products, Sphagnum Peat Moss, Peat, Perlite, Compost, Fertilizer (See Below), and a Wetting Agent. Miracle-Grow Potting Mix 0.21-0.11-0.16: Guaranteed Analysis: F1144: Total Nitrogen (N) (a Portion of the Nitrogen, Phosphate and Potash Has Been Coated to Provide [0.12%] Coated Slow Release Nitrogen [N], [0.04%] Coated Slow Release Available Phosphate [P2O5] and [0.08%] Coated Slow Release Soluble Potash [K2O]) (0.21%), Ammoniacal Nitrogen (0.113%), Nitrate Nitrogen (0.097%), Available Phosphate (P2O5) (a Portion of the Nitrogen, Phosphate and Potash Has Been Coated to Provide [0.12%] Coated Slow Release Nitrogen [N], [0.04%] Coated Slow Release Available Phosphate [P2O5] and [0.08%] Coated Slow Release Soluble Potash [K2O]) (0.11%), Soluble Potash (K2O) (a Portion of the Nitrogen, Phosphate and Potash Has Been Coated to Provide [0.12%] Coated Slow Release Nitrogen [N], [0.04%] Coated Slow Release Available Phosphate [P2O5] and [0.08%] Coated Slow Release Soluble Potash [K2O]) (0.16%). Derived from: Polymer-Coated: Ammonium Nitrate, Ammonium Phosphate, Calcium Phosphate, and Potassium Sulfate; and Ammonium Nitrate, Ammonium Phosphate, Calcium Phosphate, and Potassium Sulfate.
Warnings Keep out of reach of children.

11. Organic Potting Mix, 20 Qts.

Organic Potting Mix, 20 Qts.

  • Weight: 1 pounds
  • Coverage Area: 1 cubic foot

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Coverage Area 1 cubic foot
Origin made in the USA and imported

12. Rosy Soil – Indoor Potting Mix | 8 qt (default)

Rosy Soil - Indoor Potting Mix | 8 qt (default)

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13. Back to The Roots All-Purpose Soil Potting Mix

Back to The Roots All-Purpose Soil Potting Mix

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Country/Region of Manufacture United States
Indoor/Outdoor Indoor
Organic No
Application Flower Bed
Form Potting Soil
Volume 6 Dry Quarts

14. Back to The Roots Natural & Organic All-Purpose Potting Mix – 25.0 qt

Back to The Roots Natural & Organic All-Purpose Potting Mix - 25.0 qt

  • Weight: 25 Pounds
  • Used For: Growing Vegetables, Growing Flowers, Flowers, Plants, House Plants
  • Capacity (Volume): 1 cubic-ft
  • Features: Organic, Contains Food, Moisture Control
  • Sustainability Claims: Renewable Resource, Contains Recycled Content, Post-Consumer Recycled Material

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Primary Usage All-purpose
Controls Moisture Yes
Lowe’s Exclusive No
For Use in Flower Beds Yes
Contains Recycled Forest Products Yes

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15. Miracle Gro 8 qt. Seed Starting Potting Mix

Miracle Gro 8 qt. Seed Starting Potting Mix

  • Lightweight Mix Of Sphagnum Peat Moss And Perlite
  • Ideal For Germinating Seeds And Rooting Leaf Stem And Root Cuttings
  • Enriched With Miracle Gro Plant Food To Help Build Strong Roots
  • Discovery Acc, Con, Nbr, Nbr, Nbr, Nbr

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Weight 5.2 lb

16. Coast of Maine Stonington Blend Organic Growers Mix – 1.5 Cu ft

Coast of Maine Stonington Blend Organic Growers Mix - 1.5 Cu ft

  • Super Soil- no need for additional nutrients.
  • Excellent mix for patio plants like tomatoes.
  • Saves time and money.
  • OMRI Certified.

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Organic Yes
Ideal for Growing All Purpose
Soil Type Grow Medium
Bag Capacity/Dry Volume 1.5 cu ft
Product Type Growing Mix

17. Gardeners Supply Company 20 Qts Potting Mix | SuperRoot Booster & Moisture …

Gardeners Supply Company 20 Qts Potting Mix | SuperRoot Booster & Moisture ...

  • Weight: 1 pounds
  • Coverage Area: 1 cubic foot

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Coverage Area 1 cubic foot

18. Miracle-Gro Performance Organics Organic in Ground Soil 1.3 Cu. ft.

Miracle-Gro Performance Organics Organic in Ground Soil 1.3 Cu. ft.

  • Organic & natural ingredients, blended with aged compost
  • Plant nutrition feeds all season, for use with vegetables
  • Flowers & herbs, formulated from compost
  • 1 or more of the following processed forest products
  • Sphagnum peat moss, peat, rice hulls &/or coir & fertilizer

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Package Weight 47.25 lbs.
MFG Brand Name MIRACLE-GRO
Coverage Area (ft²) 1.3
Bag Capacity (Measured By Dry Volume) Cubic Feet
Organic Yes

19. Pennington Ultra Grow Potting Soil Mix 1 C.F.

Pennington Ultra Grow Potting Soil Mix 1 C.F.

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20. Black Gold 1302040 8-Quart All Organic Potting Soil

Black Gold 1302040 8-Quart All Organic Potting Soil

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Product Dimensions 12.0 x 3.0 x 17.0 inches

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Best Soil For Growing Cannabis Indoors Buying Guides

The Different Types of Soil for Growing Cannabis Indoors

The three types of soil commonly used for growing cannabis indoors are coco coir, soilless mix, and potting soil.

Coco coir is a type of soil made from the husks of coconuts. It is light and airy, and drains well. This makes it a good choice for growing cannabis.

Soilless mix is a type of soil that does not contain any organic matter. It is usually made from a combination of peat moss, perlite, and vermiculite. This type of soil is good for growing cannabis because it drains well and does not compact.

Potting soil is a type of soil that contains organic matter. It is usually made from a combination of peat moss, compost, and perlite. Potting soil holds moisture well, which makes it a good choice for growing cannabis.

The Pros and Cons of Using Soil for Growing Cannabis Indoors

The pros of growing cannabis indoors in soil are that it is a natural way to grow the plant, and it is easier to control the environment when growing indoors. The cons of growing cannabis indoors in soil are that it can be more difficult to control the environment, and there is a greater chance of pests and diseases.

The Different Ways You Can Prepare Soil for Growing Cannabis Indoors

Cannabis cultivation soil mix must be light and airy to allow proper root growth and drainage. It should be able to hold nutrients and moisture while still allowing excess water to drain away. There are many ways to prepare soil for growing cannabis indoors, but some basic tips include:

-Mixing in organic matter such as compost, manure, or peat moss to improve drainage and aeration while still holding nutrients and moisture.

-Adding perlite or vermiculite to improve drainage and aeration.

-Using a soil testing kit to make sure the pH is between 6.0 and 7.0.

-Making sure the soil is sterilized to prevent the spread of disease.

The Different Nutrients Your Cannabis Plants Will Need When Grown in Soil

Different plants will need different amounts and types of nutrients, depending on the species of plant and the conditions of the soil. In general, though, most plants will need some combination of nitrogen, phosphorus, and potassium to grow well.

Cannabis plants are no different – they will need these key nutrients to grow successfully in soil. In addition, cannabis plants may also need slightly different amounts of these nutrients depending on whether they are grown indoors or outdoors.

For example, cannabis plants grown outdoors in soil may need more nitrogen than those grown indoors.

How to Water Your Cannabis Plants When Grown in Soil

When watering plants grown in soil, it is important to remember that the soil should be moist, but not soggy. Too much water can lead to problems such as root rot. The best way to water plants is to use a watering can with a long spout, or a watering wand.

Water the soil around the base of the plant, being careful not to get water on the leaves. Allow the soil to dry out slightly between waterings.

How to Fertilize Your Cannabis Plants When Grown in Soil

The best way to fertilize your plants when grown in soil is to use a soil mix that is designed for growing cannabis indoors. This soil mix will have the correct nutrients that your plants need in order to grow and thrive.

The Different Pests and Diseases That Can Affect Cannabis Plants Grown in Soil

Pests and diseases that can affect plants grown in soil include:

Fungal diseases such as root rot and powdery mildew

Bacterial diseases such as stem rot and blackleg

Viral diseases such as mosaic virus and tobacco mosaic virus

Insect pests such as aphids, whiteflies, and spider mites

Mammalian pests such as rabbits, deer, and moles

The best way to prevent pests and diseases from affecting your plants is to start with healthy, disease-free plants and to keep your growing area clean and free of debris. Inspect your plants regularly and remove any pests or diseased leaves or stems immediately.

Tips for Getting the Best Results When Growing Cannabis in Soil

There are a few key things to remember when growing cannabis indoors in soil:

1. Make sure your soil is high quality and well-draining – this will allow your plants to thrive and avoid problems like root rot.

2. Be sure to water your plants regularly, but don’t overdo it – too much water can also lead to problems like root rot.

3. fertilize your plants regularly to give them the nutrients they need to grow strong and healthy.

4. Give your plants plenty of light – they need at least 18 hours of light per day to grow properly.

5. Be sure to ventilate your grow room well – cannabis plants produce a lot of moisture and you don’t want it to build up and create problems like mold or mildew.

By following these tips, you should be able to grow healthy and successful cannabis plants indoors in soil.

Conclusion

The best way to grow cannabis indoors is to use a soil mix that is specifically designed for growing cannabis. There are many different soil mixes on the market, but not all of them are created equal.

Some soil mixes are too dense and will not allow the roots to breathe, while others are too light and will not hold enough moisture. The ideal soil mix for growing cannabis indoors is one that is light and airy but still has good drainage.

A good cannabis soil mix will also have a high amount of organic matter, which will help to keep the roots healthy and the plant well-nourished.

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