Best Coco Coir for Hydroponic Gardening

Best Coco Coir for Hydroponic Gardening

Coconut fiber, sourced from the husk surrounding the coconut, possesses unique qualities that make it a popular choice in various household products like brushes, doormats, floor mats, and even mattresses. Its moisture-wicking abilities and natural bacteria-inhibiting properties are highly valued.

Coco Coir, a natural growing medium, proves invaluable for gardeners, be they urban, organic, or hydroponic enthusiasts.

Thanks to its rich moisture and nutrient content, it’s a fantastic choice for nurturing your seeds and seedlings.

Incorporating coconut coir into your gardening routine yields numerous benefits, resulting in thriving and content plants. In this article, we’ll explore some of the top Coco Coir products available today.

Our Top Pick for Coco Coir Hydroponics

coco coir hydroponics

Harris Coconut Coir Pit

  • Manufacturer: Harris
  • Weight: 5.57 pounds
  • Dimensions: 8 x 4 x 8 inches

Harris Coconut Coir is a fantastic choice for promoting robust root growth in your hydroponics setup. If you’re aiming for even distribution of nutrients within your soil or potting mix, consider adding Harris Coco Coir.

Mixing coco coir fiber into your soil gives it a lighter, fluffier texture, which helps with aeration and moisture retention.

One of the key advantages of coco coir is its remarkable water-absorbing ability—it can soak up to ten times its weight in water.

This makes it incredibly convenient for maintaining optimal root hydration. Coco coir is an incredibly versatile material that works well for a wide range of applications, from indoor potted plants to outdoor garden soil improvement.

When you’re ready to use coco coir, simply soak one of the bricks in warm water to allow the water to penetrate the fibers.

As the water is absorbed, the coir brick will expand. Keep in mind that it can expand up to eight times its original size when fully hydrated.

After draining off any excess water, you can easily separate the expanded fibers using a trowel or your hands to get the desired quantity.


  • Improves air circulation in the soil
  • Helps retain moisture
  • Suitable for organic gardening
  • Promotes robust root development


  • The cubes may not expand as much as desired, considering the price point.

Our Runner-up Choice: Burpee Organic Coco Coir

  • Manufacturer: Burpee
  • Weight: 2.2 pounds
  • Dimensions: 7.25 x 4 x 6 inches

Burpee Eco-Friendly Natural and Organic Coco Coir stands out as an excellent soil enhancement option that includes garden coir for both organic and traditional gardening.

It’s important to note that while sphagnum peat moss can be endlessly replenished, coconut coir serves as a sustainable, long-lasting resource.

Incorporating Burpee Coconut Coir into your custom nutrient blends can facilitate the growth of plants in various settings, including raised garden beds, containers, hydroponic systems, and more.

This versatile coir medium retains and gradually releases moisture to the plant’s root system, with the capacity to hold up to 150 percent of its weight in water. Horticulturally, it proves to be an exceptional choice.

Consequently, plants receive significant benefits from the addition of nutrient-rich soil amendments. The use of Burpee Coconut Coir enhances aeration and drainage around plants, which typically contributes to overall plant health and growth.


  • Coconut fiber is a renewable and sustainable soil enhancement
  • Promotes enhanced root growth through improved aeration
  • Exhibits good water retention and easy rehydration properties
  • Ideal for hydroponic systems and seed starting


  • May not be the best choice for mature plants.

Best Value for Your Money: Mother Earth Coco Bale

  • Manufacturer: Sunlight Supply Inc.
  • Weight: 10.72 pounds
  • Dimensions: 6.6 x 12.7 x 13.2 inches

The Mother Earth Coco Bale is a smart choice when you’re looking for value without compromising on quality.

This product is made from coco fiber obtained from sustainable sources, ensuring an eco-friendly option for your gardening needs.

By blending coco pith with fibers of various lengths and thicknesses, it creates a soil alternative that excels in water retention, porosity, and efficient drainage.

The versatility of this soil substitute is remarkable, making it suitable for a wide range of agricultural applications.

These coco flakes have been thoroughly washed and feature a lower salt concentration compared to other products by Mother Earth, making them a preferred choice among consumers.

Upon exposure to air for a short period, this item expands to provide an additional 60 liters of volume. When re-exposed to the air, the compression ratio of this product returns to its original state.


  • Crafted from natural Coco Fiber
  • Excellent water retention capacity
  • High porosity and efficient drainage properties


  • Water absorption may take some time.

Alternative 1: Kempf Compressed Coco Coir Pith Block

coco coir pith block

  • Manufacturer: William F. Kempf & Son Inc.
  • Weight: 10 pounds
  • Dimensions: 11 x 11 x 5 inches

When it comes to Kempf Compressed Coco Coir Pith Blocks, plant growth rates are notably higher compared to those in traditional soil.

If you compare the growth of plants in both mediums, the difference is quite noticeable. This remarkable effect can be attributed to the block’s ability to support the development of robust root systems across a wide variety of plant species.

Coco pith has an exceptional water-holding capacity, capable of retaining up to eight times its volume in water.

This makes it an outstanding soil conditioner with excellent water retention properties. You can even find pith in fruits and vegetables like citrus, tucked away in the core.

The Kempf Compressed Coco Coir Pith Block is made from natural and organic materials, and each block can be expanded to produce 17 gallons of potting mix.

You have the flexibility to purchase these blocks individually or in bulk, and it’s an eco-friendly choice that doesn’t harm the environment.


  • Promotes strong root development in all types of plants
  • Excellent water retention capacity
  • Made from natural and 100% organic materials, environmentally friendly


  • The quality is about average.

Alternative 2: Coco Bliss Premium Coco Coir Brick

coco coir brick

  • Manufacturer: Plantonix
  • Weight: 8.8 ounces
  • Dimensions: 6 x 6 x 1 inches

Coco Bliss Coconut Coir is a natural byproduct of coconut harvesting, made entirely from coconut husk fibers found in the outer shell of coconuts.

This coir, known for its excellent water retention, also boasts impressive air circulation and drainage capabilities.

If you’re searching for an eco-friendly alternative to peat moss for your potted plants, containers, and gardens, look no further.

Unlike peat moss, Coco Bliss Coconut Coir hydrates more efficiently and has a longer-lasting impact on soil without depleting natural peat bogs.

With a pH range of 5.8–6.8, it falls within the neutral range, making it ideal for breaking up hard clay soils and enhancing nutrient utilization.

For creating an excellent growing medium in gardens, planters, and raised beds, simply combine one part compost with two parts soil or potting mix.

Coco Bliss Coconut Coir is conveniently stored in 250 gm bricks, tightly compressed into a single piece. Before use, soak the brick in water for at least an hour to expand it.

This fully hydrated brick has the remarkable capacity to retain up to ten times its volume in water, with the final coir volume dependent on the water content during preparation.

To ensure minimal salt buildup in your soil, Coco Bliss Coconut Coir has undergone thorough washing.


  • OMRI Approved, 100% Natural & Organic
  • Premium quality coconut coir with low EC and pH values
  • Offers ample drainage and aeration
  • Exceptional quality with low salt content


  • It gets the job done, but it’s smaller than expected.

Alternative 3: Coco Coir Mega Brick

coco coir mega brick

  • Manufacturer: NUTRIFIELD
  • Weight: 11.68 pounds
  • Dimensions: 12.71 x 12.4 x 5.08 inches

The Coco Coir Mega Brick from Nutrifield is a convenient and portable choice, offering premium compressed coir in two versatile varieties.

Once water is introduced, these bricks transform into the well-recognized RHP-certified Nutrifield Coco Premium product.

The original product’s exceptional liquid retention and crumbly texture remain consistent in this variant. The RHP certification ensures that the coir maintains high levels of quality and consistency, remains free from pests and diseases, holds a stable pH, comes pre-buffered with calcium, and boasts a very low salt index.

Moreover, the RHP certification guarantees that the coir remains pest and disease-free. Both the Coco Brick and Mega Brick have the capability to expand, with the Coco Brick yielding up to 9 liters of fresh, ready-to-use coco, and the Mega Brick providing an impressive 55 liters.


  • Low salt content Coconut Coir pre-buffered with calcium
  • RHP certification ensures top-notch coir quality and consistency
  • High water-retention capacity reduces the need for frequent plant watering


  • Some may find it to be less cost-effective.

Alternative 4: Thunder Acres Coco Coir Brick

  • Manufacturer: Thunder Acres
  • Weight: 8.8 ounces
  • Dimensions: 8.31 x 4.02 x 2.72 inches

Thunder Acres offers coir in convenient 1.5-pound compressed bricks, making storage and handling a breeze. Once fully hydrated, these bricks can absorb an impressive eight to ten times their own volume in water.

With a neutral pH range of 5.8–6.8, Thunder Acres Coco Coir is excellent for breaking up dense clay soils, ensuring nutrients are utilized more effectively.

This versatile coir can be used as a soil amendment for potted plants, containers, and gardens. It’s also a sustainable and eco-friendly alternative to peat moss.

Before use, simply wet the brick with water and let it sit for at least twenty minutes.

While coir occupies more space in the soil and decomposes more slowly than peat moss, it is easier to initially work with.

To create a top-notch growing medium for gardens, planters, and raised beds, blend one part coir with two parts compost-rich soil or potting mix.


  • Excellent for seed germination and soil improvement
  • Easy to break apart and rapidly expands to its full volume
  • Lightweight bricks for easy handling


  • Doesn’t expand significantly when soaked in water.

Alternative 5: Green Dream Premium Coco Coir Brick

  • Manufacturer: Green Dream
  • Weight: 10.69 pounds
  • Dimensions: 15.79 x 14.48 x 5.67 inches

The Green Dream Premium Coco Coir Brick is a standout choice, particularly when it comes to seed sprouting.

It excels as a moisture-retaining medium for newly planted seeds and young plants, ensuring a high germination rate.

This coir brick weighs 11 pounds and, once moistened, can be easily torn into smaller pieces as it expands.

In my experience, it’s also highly beneficial in the garden. When mixed with garden soil, it improves drainage while maintaining soil moisture.

When incorporated into loamy soil around roses, for example, it expands to about five times the size of the original brick.

The results have been promising, although further observations are needed. To prepare the coir, simply add about three to four gallons of water to the brick and let it sit undisturbed for a few hours or even a full day.

However, it’s worth noting that breaking the brick into smaller pieces can be a bit labor-intensive.


  • An excellent and cost-effective addition to your garden
  • User-friendly application
  • Expands nicely to accommodate your gardening needs
  • Promotes self-renewing growth


  • Breaking it into smaller pieces can be challenging.


1. What coco is best for hydroponics?

The best coco product for hydroponics is usually “Coco Coir.” Coco coir is a natural growing medium made from coconut husk fibers.

It has excellent water retention, aeration, and drainage properties, making it ideal for hydroponic systems.

When using coco coir in hydroponics, it’s important to ensure it is properly prepared and supplemented with nutrients, as it may not contain all the necessary microorganisms and elements for plants growth by default.

2. Is coco coir good for hydroponics?

Yes, coco coir is an excellent choice for hydroponics. It’s a natural and sustainable growing medium made from coconut husk fibers.

Coco coir provides good water retention, aeration, and pH balance, making it well-suited for hydroponic systems. It’s also environmentally friendly and versatile, compatible with various hydroponic setups.

However, to maximize plant growth, coco coir may need supplementation with hydroponic nutrients and beneficial microorganisms.

3. Is Coco better than soil for hydroponics?

Coco coir and soilless hydroponic systems are often considered better than traditional soil for hydroponics for several reasons:

  1. Controlled Environment: Hydroponic systems, including those using coco coir, allow for precise control over nutrient levels, pH, and water content, optimizing plant growth.
  2. Water Efficiency: Hydroponics typically use less water than soil-based growing because water is recirculated in the system, reducing wastage.
  3. Faster Growth: Plants in hydroponic systems tend to grow faster because they receive a constant supply of nutrients and oxygen, promoting healthy root development.
  4. Disease Prevention: Soilless mediums like coco coir reduce the risk of soil-borne diseases and pests, leading to healthier plants.
  5. Space Efficiency: Hydroponic systems can be more space-efficient than traditional soil gardening, making them suitable for urban or indoor environments.


Coco coir offers a natural advantage as it provides an excellent environment for beneficial microorganisms like bacteria and fungi to thrive.

However, it’s important to note that these microorganisms aren’t automatically present in your coco coir. You’ll need to introduce them into your system through supplements or organic nutrients and fertilizers.

For an extra boost in microorganism growth, consider adding earthworm castings to the mix.

Our aim in creating this article was to equip you with valuable information to make well-informed choices for your hydroponic garden.

Your gardening success depends on making the right decisions, and we hope this guide has been helpful in your journey.

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