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  • Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt
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Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt

4.5 out of 5 stars 1,359 ratings

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Purchase options and add-ons

Brand HARRIS
Style Modern
Item weight 0.24 Kilograms
Item volume 2.2 Liters

About this item

  • Premium Soil Amendment - Increasing soil carbon, nutrient content, water retention, water-soluble nutrients, and beneficial microbial life.
  • Naturally Derived - Made from plant materials such as hardwoods, grasses, and agricultural and forest residues
  • Easy to Use - Simply mix in with houseplant soil 1 part biochar to 9 parts potting soil
  • Use in Indoor and Outdoor Plants - Use in gardens, ornamentals, terrariums, or small houseplants such as orchid or bonsai
  • Pure - Made with 100% pure biochar, no fillers, additives or colors whatsoever

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This item: Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt
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$27.89
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Product details

  • Product Dimensions ‏ : ‎ 6.35 x 19.05 x 24.13 cm; 240 g
  • Date First Available ‏ : ‎ Nov. 13 2022
  • Manufacturer ‏ : ‎ Harris
  • ASIN ‏ : ‎ B0BC268VT4
  • Item model number ‏ : ‎ CHAR-2
  • 鶹 Rank: #2,550 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
  • Customer Reviews:
    4.5 out of 5 stars 1,359 ratings

Product information

Technical Details

Manufacturer ‎Harris
Item model number ‎CHAR-2
Product Dimensions ‎6.35 x 19.05 x 24.13 cm; 240 g
ASIN ‎B0BC268VT4

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Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt


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Product description

What is Biochar? Biochar is a type of charcoal made from plant materials such as hardwoods, grasses, and agricultural and forest residues that are decomposed at high temperatures, often during renewable energy production. During the process, the physical and chemical properties of the plant material change into a porous, stable, carbon-rich by-product known as biochar. Why use it? Biochar has been used in agriculture for many centuries. Adding biochar to soil has the potential of increasing soil carbon, soil nutrient content, increased water retention and water-soluble nutrients, and increased beneficial microbial life. DIRECTIONS Best results are achieved when adding this mix to your soil at least 5-7 days BEFORE planting. However, this can be used at any time in the planting process. Optimal ratio for most gardeners is 5-10% biochar in the top 6 inches of their soil. (1 part Bio Char to 9 parts planting soil). Indoor Plants(container plants, seeds, cuttings, transplants): Use a small rake or spoon and hand-mix this product around the plant within your desired container. Best results are adding close to the root zone. You can also just layer a light dusting on the top and water in as usual. Outdoor Plants (Gardens, Bedding Plants, Ornamentals): Use your conventional tiller and rake and till directly into the soil. Adding more over time can increase product performance. Trees and Shrubs: Best when applied to the root zone area. Rake into this area and water as desired. Compost Mix: Mix as needed within your compost process - use as desired as you would your final compost. This product is not intended to be used as a soil substitute.

Important information

Safety Information

Avoid inhalation. Do not ingest. Avoid contact with eyes.

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Harris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt
HARRISHarris Horticultural Charcoal, Premium Biochar Soil Amendment for Plants and Terrariums, 2qt
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Price$21.99$25.99-25%$17.97
List:$23.97
$27.95$18.99$27.89
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Get it by Monday, Jul 28
Get it by Tuesday, Jul 29
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Get it by Monday, Jul 28
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Customer reviews

4.5 out of 5 stars
1,359 global ratings

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Horticultural charcoal
5 out of 5 stars
Horticultural charcoal
This item add nutrients to your dead soil
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Top reviews from Canada

  • Reviewed in Canada on August 5, 2024
    Verified Purchase
    Small bags so had to buy several but helps to cover the spread of the juglone from the black walnut in the soil so other plants can grow.
  • Reviewed in Canada on March 10, 2025
    Verified Purchase
    Good price. Great product. For all your planting needs. I bought it here for the convenience was the same price as local. So pricing is par. I just didn't have time to run to the garden center.
  • Reviewed in Canada on March 6, 2025
    Verified Purchase
    J'utilise ce produit dans mon jardin le printemps, en petite quantité le charbon ravive le sol. J'aime ce produit.
    Report
  • Reviewed in Canada on July 18, 2025
    Verified Purchase
    Very useful but I wish there is more contained in the package
  • Reviewed in Canada on March 8, 2025
    Verified Purchase
    This item add nutrients to your dead soil
    Customer image
    5.0 out of 5 stars
    Horticultural charcoal

    Reviewed in Canada on March 8, 2025
    This item add nutrients to your dead soil
    Images in this review
    Customer image
  • Reviewed in Canada on March 13, 2025
    Verified Purchase
    item as described, good value
  • Reviewed in Canada on September 21, 2023
    Verified Purchase
    I was surprised at how small the package was; however I only needed a little bit of charcoal at a time. I use it to keep away the musty smell of a glass plant terrarium. Works like a charm!
    One person found this helpful
    Report
  • Reviewed in Canada on October 14, 2024
    Verified Purchase
    I've only just got this a short while ago but it's perfect for my personal homemade chunky aroid mix

Top reviews from other countries

  • Superb quality
    5.0 out of 5 stars Superb
    Reviewed in Saudi Arabia on February 20, 2025
    Verified Purchase
    Received in good condition. Till next transaction
  • Jesse S.
    5.0 out of 5 stars A Must-Have for Healthy Plants—Superior Quality & Versatile Use
    Reviewed in the United States on February 6, 2025
    Verified Purchase
    If you’re serious about healthy plants, better drainage, and preventing root rot, Harris Horticultural Charcoal is an absolute game-changer. I’ve tried several brands, but this one stands out for its high-quality, fine yet effective texture and multiple uses in both gardening and home applications.

    🌿 Improves Soil & Prevents Root Rot
    As a plant lover, I use this horticultural charcoal in my indoor and outdoor pots to help with moisture control. It absorbs excess water while still allowing soil to retain the right amount of hydration—a lifesaver for plants prone to overwatering! Since using it in my orchid and succulent mix, I’ve noticed healthier roots and less risk of fungal growth.

    💨 Odor Absorption & Air Purification
    Beyond gardening, I’ve also used this charcoal as a natural deodorizer in my home. It works amazingly well at absorbing moisture and odors in areas like the bathroom, fridge, and even my compost bin. If you’re looking for a chemical-free way to neutralize smells, this is a fantastic solution.

    ✅ Premium Quality & Great Value
    The fine, uniform pieces make it easy to mix into potting soil, and it’s not overly dusty like some lower-quality alternatives. A little goes a long way, so this bag offers excellent value for the price.

    🌎 Eco-Friendly & All-Natural
    I appreciate that this is 100% natural charcoal, free of additives or fillers. It’s a sustainable choice for both gardening and household use, and it doesn’t have that artificial or chemical-laden smell that some other charcoals do.

    Final Verdict:
    Whether you’re a plant parent, terrarium enthusiast, or just looking for a natural deodorizer, Harris Horticultural Charcoal is a must-have. The quality is top-tier, the benefits are undeniable, and the versatility makes it a staple in my home. I highly recommend it—this is one of those products you don’t realize you need until you try it!

    💡 Pro Tip: Rinse before use to remove excess dust, and mix it with potting soil for optimal results.
    Customer image
    Jesse S.
    5.0 out of 5 stars
    A Must-Have for Healthy Plants—Superior Quality & Versatile Use

    Reviewed in the United States on February 6, 2025
    If you’re serious about healthy plants, better drainage, and preventing root rot, Harris Horticultural Charcoal is an absolute game-changer. I’ve tried several brands, but this one stands out for its high-quality, fine yet effective texture and multiple uses in both gardening and home applications.

    🌿 Improves Soil & Prevents Root Rot
    As a plant lover, I use this horticultural charcoal in my indoor and outdoor pots to help with moisture control. It absorbs excess water while still allowing soil to retain the right amount of hydration—a lifesaver for plants prone to overwatering! Since using it in my orchid and succulent mix, I’ve noticed healthier roots and less risk of fungal growth.

    💨 Odor Absorption & Air Purification
    Beyond gardening, I’ve also used this charcoal as a natural deodorizer in my home. It works amazingly well at absorbing moisture and odors in areas like the bathroom, fridge, and even my compost bin. If you’re looking for a chemical-free way to neutralize smells, this is a fantastic solution.

    ✅ Premium Quality & Great Value
    The fine, uniform pieces make it easy to mix into potting soil, and it’s not overly dusty like some lower-quality alternatives. A little goes a long way, so this bag offers excellent value for the price.

    🌎 Eco-Friendly & All-Natural
    I appreciate that this is 100% natural charcoal, free of additives or fillers. It’s a sustainable choice for both gardening and household use, and it doesn’t have that artificial or chemical-laden smell that some other charcoals do.

    Final Verdict:
    Whether you’re a plant parent, terrarium enthusiast, or just looking for a natural deodorizer, Harris Horticultural Charcoal is a must-have. The quality is top-tier, the benefits are undeniable, and the versatility makes it a staple in my home. I highly recommend it—this is one of those products you don’t realize you need until you try it!

    💡 Pro Tip: Rinse before use to remove excess dust, and mix it with potting soil for optimal results.
    Images in this review
    Customer imageCustomer imageCustomer image
  • C. Luzum
    5.0 out of 5 stars Good for my plants
    Reviewed in the United States on June 6, 2025
    Verified Purchase
    This horticultural charcoal is a good product. The pieces are small & not too dusty. It’s beneficial for houseplants, as it aerates the soil, & protects the roots & soil from bacteria & fungus. I mix up my own potting soil blend, & this brand of charcoal is the one I always have good luck with. I highly recommend it.
  • Happy in Cali
    5.0 out of 5 stars Happy in CALI
    Reviewed in the United States on January 22, 2025
    Verified Purchase
    Exactly as described, well packaged, arrived on time, works well for my purpose
  • Steve
    5.0 out of 5 stars Great for Vivarium builds and Springtail cultures
    Reviewed in the United States on November 10, 2024
    Verified Purchase
    I used this for my all my Vivarium and Bioactive reptile enclosures. This is by far the best I could find anywhere for Horticultural grade charcoal. Bought multiple times and will again.

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