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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:


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:


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  • 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.

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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.

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