Get the Most Out of Your Coco Coir with Ideal Moisture Retention

Coco coir has become an increasingly popular growing medium over the past decade. Made from the fibrous husks of coconuts, this sustainable material offers a renewable and environmentally friendly alternative to peat moss. One of the main benefits of using coco coir is its excellent moisture retention abilities. Proper moisture management is crucial for healthy plants and high yielding gardens and crops.

When soaked and prepared correctly, coco coir’s natural sponge-like qualities allow it to hold water while still maintaining airflow to plant roots. While plain coco fiber offers decent moisture retention on its own, many gardeners look for products specially formulated to maximize water holding capacity.

In this blog post, we dive into the top coconut coir products for retaining moisture. We also cover key considerations when selecting coco coir for your specific needs. Let’s explore some frequently asked questions about moisture management with coco coir. By the end, you’ll know how to pick the ideal coco coir to keep your plants hydrated and happy.

Top Moisture Retaining Coco Coir Products

Not all coco coir is created equal when it comes to moisture retention. Some products stand out for their exceptional water holding capabilities. Here are the top coconut coir options for maintaining ideal moisture levels in your growing medium.

Coco & Coir Organic Coco Coir Brick

One of the most popular and widely available coco coir products is the compressed brick format. Coco & Coir offers an organic and washed coco brick made from the husks of mature coconuts. The tightly packed bricks expand dramatically when soaked in water, reaching up to 7x their original volume. This tight compression retains more fibers during processing for improved moisture retention.

The bricks rinse clean with no need for buffering. Coco & Coir coir is OMRI listed for organic use and free of trichoderma fungi inoculants. It provides an affordable option for small to medium sized gardens and containers. The compressed bricks save storage space until you are ready to expand them for use.

Canna Coco Natural

Serious growers love Canna’s coconut coir offerings for their outstanding quality and consistent performance. Canna Coco Natural comes pre-rinsed, buffered, and pH adjusted between 5.2-6.2 for optimal growing right out of the bag. The fine grade texture prevents compaction while allowing plenty of air space. This air space is key for healthy roots, while the fine particles retain substantial moisture.

Canna Coco Natural makes rinsing and preparation easy, requiring only a quick soak before use. There’s no dust or large chunks. With pre-treatment to remove salts, this coco coir achieves impressive moisture retention and drainage without inhibiting root development. It’s an excellent choice for containers and hydroponic systems.

Roots Organics Coco Soilless Mix

Roots Organics blends coco fiber, peat moss, perlite, and rice hulls to create their signature Coco Soilless Mix. Adding 15% sphagnum peat moss helps provide nutrients and increases moisture retention. The perlite further amends the mix by improving drainage and aeration. The result is a lightweight and fluffy growing medium with an exceptional balance of moisture retention and air porosity.

This premixed organic potting soil offers outstanding performance for moisture management. The components work synergistically to create ideal conditions for healthy root systems. While suitable for all plants, Roots Organics Coco Soilless Mix shines brightest for transpiration-heavy fruiting plants like tomatoes, cucumbers, and peppers.

Botanicare Cocogro Premium

Botanicare utilizes a proprietary blend of different sized coconut fibers in their Cocogro Premium mix. The combination of fine particulate and long fibers allows growers to maximize moisture retention without suffocating plant roots or encouraging compaction. Reviewers praise the excellent water holding capacity of this mix.

Naturally resistant to compaction, Cocogro Premium maintains the important air pockets that plant roots need to thrive. The pressed cubes and loose fiber blend make for easy application and planting. With enhanced aeration and oxygen flow, Botanicare Cocogro promotes faster growth and higher yields. It requires minimal rinsing and offers water savings compared to soil and peat mixes.

Vermont Organics Reclamation Soil

Vermont Organics utilizes 80% coco fiber and 20% perlite to create their Reclamation Soil. They use an ideal grade of coco with long fibers that resist decay. These unrefined and untreated fibers retain moisture efficiently. The addition of perlite creates the desirable air pockets to prevent saturated, muddy conditions.

With no synthetic additives or trichoderma inoculation, Vermont Organics Reclamation Soil is suitable for organic gardening. The components work together to offer an effective moisture retention solution with reduced environmental impact compared to peat based mixes. This versatile product works for containers, raised beds, and in-ground planting.

How to Choose the Best Moisture Retaining Coco Coir

With so many coco coir products available, it can get confusing selecting the ideal one for your specific needs. Here are the most important factors to consider when evaluating moisture retaining coco coir products:

Coconut Source and Organic Certification

Higher quality coco coir comes from the husks of mature, high-lignin coconuts. The best coco producing regions include Sri Lanka, Mexico, and India. Unrefined coco from high-grade sources will retain more moisture. Look for organic certifications like OMRI to ensure the raw coir and any processing avoids chemical contaminants.

Processing Methods

Mechanical processing preserves more fibers and results in better moisture retention compared to chemical or over-processed coco. Compressed bricks are a good sign of higher fiber content. Excessively fine particles indicate over-processing that damages long fibers needed for water retention.

Buffering and Pre-Treatment

Some coco coir comes pre-rinsed and buffered to achieve an ideal pH between 5.2 and 6.8. This saves work on your end. Pre-treating also removes excess salts that can accumulate during processing and inhibit performance. Excess sodium salt residues should be rinsed away before use.

Fiber Texture and Size

A good coco coir growing medium contains a blend of fine particulate and long, stringy fibers. The fine particles hold moisture while the long fibers maintain porosity and oxygen flow. Avoid products with high amounts of dust-like particles, which overly retain moisture and suffocate roots.

Other Amendments

Some coco coir is amended with materials like peat, perlite, vermiculite or compost. This helps create a well-aerated blend that offers moisture retention while allowing good drainage. Peat in particular can help increase the water holding capacity of coconut coir. Too much added perlite reduces moisture retention.


Dense compressed bricks signal a higher fiber content and better moisture retention capability. Loose bags may act more like peat and break down faster. Compression indicates quality processing that preserves moisture retaining coconut fibers. Expandable bricks provide the best value.

FAQs About Moisture Retaining Coco Coir

Let’s go over some common questions about managing moisture levels with coco coir:

Does coco coir need added nutrients?

Plain coco coir is inert and provides no nutrients on its own. It will require regular fertilizer application, especially for long term crops. Many growers amend coco with compost or nutrient rich castings.

What is an ideal pH range for coco coir?

Coco coir tends to be acidic out of the bag, around pH 5.5-6.5. Most plants grow best in a slightly acidic pH between 5.5-6.5. Coco can be buffered with lime if needed to achieve optimal pH.

How often does coco coir need to be watered?

For containers, coco coir should be watered almost daily, allowing the top inch or two to dry out between waterings. Proper moisture management is key to preventing deficiencies. Use your finger to test moisture content.

Is coco coir susceptible to fungus gnats or mold?

Coco coir’s particle size can allow fungus gnat larvae to thrive. Soaking cubes or bricks fully before use helps limit this issue. Excess moisture can also cause mold with poor air circulation. Allow coco to dry adequately between waterings.

Can too much perlite be added to coco coir?

While perlite improves aeration, too much (over 30%) can reduce moisture retention. Find a good balance of moisture retention and drainage by not over-amending coco coir with perlite.

How long does coco coir last before needing to be replaced?

Unlike peat which decomposes, coco coir can often be reused for several years. Leaching any accumulated salts revitalizes older coco. Just amend with some compost or worm castings to replenish nutrients.

Is coco coir safe for pets and children?

Coco coir is made from harmless natural coconut husks. It contains no toxic chemicals or ingredients. The finished product is biologically stable and safe for people, kids, and pets when used as directed. Always supervise children in the garden.

Can coco coir be reused or recycled?

Coco coir’s sustainability comes from the ability to reuse it. Rinse and revitalize spent coco coir by soaking and leaching salts. Compost spent coco or use it as a natural mulch or soil amendment. Coco biodegrades naturally without contaminants.

Does coco coir change the taste of consumable plants?

Coco coir is flavor neutral and won’t impact the taste of edible crops like fruits, vegetables or herbs. Make sure to thoroughly wash produce. Test pH and nutrients of coco to ensure optimal flavor.

Is coco coir better than peat moss for moisture retention?

Coco coir retains moisture as well as or better than peat moss. Peat decomposes over time, while coco fibers remain stable for years. Coco is more environmentally sustainable long term. Blending peat and coco combines the best of both.


With its excellent moisture retention, coco coir helps provide ideal growing conditions. Look for quality products specifically designed to maximize water holding capacity. Consider variables like source material, processing method, amendments and compression when selecting the ideal coco coir. Follow best practices like attentive watering and adequate drainage to take full advantage of coco coir’s moisture retention abilities.

Coco coir offers an eco-friendly and reusable alternative to peat moss that excels at retaining moisture around plant roots. Take the time to choose a quality coco coir product for your specific gardening needs. With proper preparation and management, coco coir gives gardeners incredible control over moisture levels for healthier, more productive plants.

Hello, everyone! I'm David Henry, a dedicated customer and enthusiastic reviewer of Tractor Supply Company. As a farmer and agriculture enthusiast, I frequently visit Tractor Supply Company to explore and purchase a wide range of agricultural supplies, tools, and equipment. Over the years, I have accumulated extensive experience and knowledge in shopping at Tractor Supply Company, and I aim to help others make wiser choices through my sharing. I understand the importance of selecting the right products for farmers, ranchers, and outdoor enthusiasts alike. That's why I enjoy sharing my insights and recommendations to assist individuals in finding the best-suited products for their needs. Join me as we embark on a journey of discovering quality products and making informed decisions at Tractor Supply Company. Together, let's enhance our farming and outdoor experiences through valuable insights and practical advice.