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Sun Gro Horticulture’s line of Black Gold potting soils, specialty mixes, and amendments have helped many cannabis growers produce big yields and quality flower buds. Knowing how to use Black Gold for growing weed can be essential to a successful harvest.

What Is Black Gold Natural and Organic Potting Soil?

Black Gold's natural and organic potting soil can be used for growing everything, from vegetables to herbs to flowers and cannabis. Many cannabis growers recommend using organic soil to produce the best marijuana plants.

Benefits of Using Black Gold for Growing Weed

Black Gold is certified as a premium potting soil by the Mulch & Soil Council. Here are a few of the benefits of growing with this organic potting mix.

  • All-natural ingredients
  • All-purpose mix, great for containers or raised beds
  • Excellent aeration
  • OMRI-listed
  • Contains RESiLIENCE®
  • Earthworm castings

Organic Ingredients

Black Gold is OMRI-listed for organic cultivation. Black Gold’s organic soil features a wide range of organic ingredients, including:

  • Canadian sphagnum peat moss
  • Bark
  • Compost
  • Earthworm castings
  • Horticultural-grade perlite
  • Pumice or cinders
  • Organic fertilizer


RESiLIENCE® is Sun Gro’s silicon-enriched additive that improves plant growth and resistance to wilting.

Benefits of RESiLIENCE® include:

  • Faster flowering
  • Resistance to wilting
  • Improved root growth
  • Bigger stem diameter
  • Fast recovery from infrequent watering

Sizes Available

Black Gold's natural and organic potting mix are available in the following sizes:

  • 8 qt
  • 16 qt
  • 1 cf
  • 5 cf
  • 2 cf
  • 60 cf

Where to Buy Black Gold Organic Potting Soil

Black Gold's natural and organic potting mix is available at leading garden centers and hardware stores across the country. Ask your local garden center if they have any Black Gold soil in stock.

How Much Is Black Gold Natural and Organic Soil?

Prices for Black Gold natural and organic potting soil vary by retailer. Based on the latest prices (as of December 2021) on Amazon and other online retailers and gardening stores, here is what you can expect to pay for different sizes of Black Gold:

  • 8 qt: $14.91
  • 16 qt: $21.56
  • 1 cf: $21.45
  • 5 cf: $24.95
  • 2 cf: $33.60
  • 60 cf: $663.95

How to Use Black Gold for Growing Weed Plants

black gold for growing weed

If you want to grow healthy cannabis plants with one of the best potting soil mixes available, here is how to use Black Gold for growing weed.

1. Choose a Container

Choose an appropriately-sized pot or container for your cannabis plant. When transplanting your plant, choose a slightly bigger container than the old one. Ensure your container has drainage holes. A saucer on the bottom of the container can help contain runoff water. If you have a large drainage hole, you can use a screen or layer of pebbles to improve water retention.

2. Transfer

Gently tip and remove the cannabis plant from its previous container. Make sure the root ball remains in one piece. If your cannabis plants are pot-bound, carefully loosen the roots to improve the soil-to-root contact.

3. Planting

Add a layer of the Black Gold natural and organic potting mix to the bottom of the new and bigger container. Leave enough space for your plants. The amount of soil you need to use depends on your container and plant size.

Put your plants in your container and cover the roots with fresh soil mix. Leave about 1 to 2 inches of space at the top for easy watering. Gently press the soil down and remove excess soil from the stems and leaves.

4. Watering and Feeding

Water the potting soil until the bottom saucer is full. Keep an eye on the moisture levels of the soil. Water your plants when the top 1-2 inches of soil feel dry.

5. Growing Environment

Understand the environmental requirements (light, temperature, humidity, moisture) for growing a healthy cannabis plant. Give your plants the optimal climate to thrive.

Using Black Gold For Growing Marijuana FAQ's

What is Black Gold soil, and why is it recommended for growing cannabis?

Black Gold is a potting mix that is made entirely of natural ingredients and is claimed to be great for cannabis plants. The product is organic and offers a diverse assortment of nutrients that are necessary for the growth of cannabis. The mix of this product is comprised of premium peat moss, compost, and earthworm castings, which together provide exceptional drainage and moisture retention.

Is Black Gold soil suitable for all growth stages of marijuana?

Black Gold soil is indeed adaptable and may be utilized for the cultivation of cannabis plants at any stage of their development, from seedlings to fully grown plants. Because of its nutrient-dense composition, it is able to meet the many requirements that cannabis plants have during their whole life cycle.

How does Black Gold compare with other potting soils for growing cannabis?

When compared to some synthetic or chemically-enhanced soils, Black Gold is frequently preferred because of its organic composition and balanced nutritional profile. This makes it safer and more effective for cannabis plants than other soils. It is comparable to other organic potting mixes that are available on the market that are of a good quality.

Do I need to add any supplements or nutrients when using Black Gold for cannabis?

Despite the fact that Black Gold offers a sufficient foundation of nutrients, cannabis cultivators frequently supplement their plants with additional nutrients or amendments, taking into account the particular requirements of their plants and the stage of their development. It is recommended to perform routine monitoring of the pH and nutrient levels of the soil.

Can I reuse Black Gold soil for multiple cannabis grow cycles?

It is feasible to reuse potting soil, including Black Gold, although depending on the circumstances, it could need to be rejuvenated with additional compost or nutrients. Prior to reuse the soil, it is essential to make certain that it is devoid of any types of diseases or pests.

How does Black Gold affect the pH balance of the soil for cannabis plants?

Black Gold keeps a pH that ranges from neutral to slightly acidic, which is acceptable for the cultivation of cannabis. On the other hand, in order to keep your plants in the best possible conditions, you might need to perform pH tests and make modifications on a frequent basis.

Is Black Gold suitable for both indoor and outdoor cannabis cultivation?

There is no doubt that Black Gold is an excellent choice for growing cannabis either indoors or outdoors. Its composition encourages the formation of strong roots and provides appropriate drainage, both of which are essential for both settings.

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Are there different types of Black Gold soil for different types of cannabis strains?

Black Gold provides a selection of potting mixes that are customized to meet the requirements of a wide variety of cannabis strains and growth environments. On the other hand, its all-purpose potting mix is generally suitable for the majority of cannabis cultivars.

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Luis Cordova
Luis Cordova

Luis Cordova is a distinguished author, and renowned expert in cannabis cultivation, who possesses a Master's degree in Plant Biotechnology and Pharmaceutical Science. As a valued contributor to highly esteemed publications such as Cannabis Training University and Maximum Yield Magazine, Luis has emerged as a trusted source of guidance and knowledge in the cannabis industry. Having written thousands of informative articles, Luis is widely recognized for his comprehensive expertise on cultivating cannabis, both indoors and outdoors.

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