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Kempf Compressed Coco Coir Pith Block, 10 Pound Block, Natural Potting Mix, Expands to 18 Gallons

4.7 4.7 out of 5 stars 2,537 ratings
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  • 🌱Promotes healthy root growth for all plants, while increasing growth rate compared to regular soil. Coir pith, also known as coco peat or coconut coir, is a natural, organic material derived from the husk of coconuts. It is a byproduct of the coconut industry, making it a sustainable and eco-friendly option.
  • 🌱High water retention, pith can act as the perfect soil conditioner. It can retain moisture up to eight times of its volume. Coir pith has outstanding water retention properties, allowing it to absorb and hold water efficiently. At the same time, it provides good aeration to plant roots, promoting optimal conditions for plant growth. This unique combination makes it an ideal component in potting mixes and soil amendments.
  • 🌱100% Natural Organic and Eco Friendly. Coir pith is pH neutral, which means it does not have an acidic or alkaline effect on the soil. This makes it versatile for a wide range of plants. Additionally, coir pith contains some natural nutrients, such as potassium and phosphorus, contributing to its role as a beneficial soil amendment.
  • 🌱Each block expands to 17 gallons of potting mix.Widely used in horticulture and gardening, coir pith serves various purposes. It can be used as a soil conditioner to improve soil structure, as a component in potting mixes, and even as a mulching material. Its versatility and environmentally friendly nature make it a popular choice among gardeners and growers seeking sustainable alternatives.

Customer ratings by feature

Absorbency
4.5 4.5
Easy to use
4.4 4.4
Value for money
4.2 4.2
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Customer reviews

4.7 out of 5 stars
2,537 global ratings

Customers say

Customers like the weight, value, and ease of use of the outdoor living product. For example, they mention it's lightweight, easy to work with, and economical for shipping purposes. Some are also satisfied with moisture control, and quality. That said, opinions are mixed on expansion, cleanliness, and durability.

AI-generated from the text of customer reviews

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QualityValueMoisture controlEase of useWeightExpansionDurabilityCleanliness
368 customers mention "Quality"339 positive29 negative

Customers are satisfied with the quality of the coco fiber. They mention that it's a great product, and their seedlings appear very healthy. Some say that it is an acceptable quality, inexpensive, non-salty coco. It is a fine coir, and is perfect for smaller reptile species feeding wet prey. Customers also say that the hibiscus plants look very happy so far.

"Perfect for me to use for my plants and garden. Coir holds moisture and I mix it with other mediums like perlite. Fascinating to watch expand." Read more

"I uses thisnun my raised bed garden and it worked very well" Read more

"...Perfect, dark rich potting soil with great drainage and organic nutrients without the need to haul around heavy bags or pay so much at the store...." Read more

"...It is a fine coir so for smaller reptile species feeding wet prey items is not recommended as it risks impaction and nobody wants that!..." Read more

134 customers mention "Value"108 positive26 negative

Customers like the value of the coco peat. They say it's a great product for the price, works well, and is a cheap alternative to premixed potting soils. Customers also mention that it saves money on soil.

"...Smell is okay. Definitely worth the money." Read more

"...First things first - it's acceptable quality, inexpensive, non salty coco coir, so it meets that standard...." Read more

"...I will definitely use this again when I run out. Good Value!" Read more

"...It's an amazingly high quantity...." Read more

85 customers mention "Moisture control"85 positive0 negative

Customers are satisfied with the moisture control of the coir. They mention that it holds moisture quite well, does a great job of keeping the seeds moist, and is impressive in water retention. The coire stays slightly damp in the container, which makes it easier to use whenever it is needed. It provides covering for the garden, keeping it moist. It does not mildew or attract bugs, and it soaks out just fine. Some brands hold water the best and are consistent in quality. It keeps roots protected from drying out and improves drainage.

"Perfect for me to use for my plants and garden. Coir holds moisture and I mix it with other mediums like perlite. Fascinating to watch expand." Read more

"...Perfect, dark rich potting soil with great drainage and organic nutrients without the need to haul around heavy bags or pay so much at the store...." Read more

"...That is where this product shines. It holds humidity extremely I've not had any mold issues even with some of my more humid enclosures...." Read more

"...I depend on this medium to lighten my compost, add moisture retention to ensure all my seedlings sprout and my tomatoes, peppers and eggplants have..." Read more

41 customers mention "Ease of use"33 positive8 negative

Customers find the peat moss very easy to work with, fast to absorb water, and simple to prepare. They also say the fiber is good quality, reconstitutes easily, and is very clean.

"...Although it's not ready- to-use as is peat moss, it's very simple to prepare -- just soak it in water overnight and it expands and becomes all nice..." Read more

"...I did this in a wheel barrow that I found very easy to add water to and use." Read more

"...The fiber is good quality, reconstitutes easily and is very clean - no big chunks/pieces or other debris...." Read more

"...A very easy, organic and sustainable solution to plants needing a boost." Read more

35 customers mention "Weight"30 positive5 negative

Customers like the weight of the product. They say it's lightweight, fluffy, and non-bulky. Some say it is compact to store and easy to handle and store.

"...And I really like having a lightweight option; I am weary of lugging heavy sacks of much of anything around...." Read more

"...I just added water. It was very compact but absorbed water and expanded like very fast...." Read more

"...delivered quickly and came in a smallish dry brick; it is very easy to handle and store...." Read more

"...My deck container garden looks like it's from the prehistoric age! Dense, green, healthy plants...." Read more

96 customers mention "Expansion"62 positive34 negative

Customers are mixed about the expansion of the coir block. Some mention that it expands into a good amount with water added, while others say that it didn't expand as well as other brands. The block is large enough, but the water was trickling down at a slow pace.

"...Fascinating to watch expand." Read more

"...If I miss a day, the plants begin to wilt.The Coir, compost and topsoil mixture appears to hold moisture a bit better...." Read more

"Even though the package was small, it expanded into a good amount with water added. My mom was able to use one package all over her little garden...." Read more

"...The container was large enough, but the water was trickling down at a slow pace that hydrated the coir unevenly...." Read more

47 customers mention "Durability"20 positive27 negative

Customers are mixed about the durability of the product. Some mention that it comes apart easily, while others say that it is very difficult to break apart by hand.

"Very difficult to break up -- I ended up needing to use a pick axe..." Read more

"...chunks that were still semi dry, and was surprised to find how easily it came apart...." Read more

"...Not much luck, it was still hard as a brick and didn't' seem to have absorbed any water. I kept up with using the rake for about a week...." Read more

"...It was easy to break with water and there was no long strands like some other brands. Highly recommended for pets" Read more

29 customers mention "Cleanliness"18 positive11 negative

Customers are mixed about the cleanliness of the outdoor living product. Some mention it's clean, sterile, and less messy than peat moss. However, others say that it has more dirt and saw dust than coco coir, and is dusty when breaking up dry.

"Very high quality coir granular, not stringy or dirty. I rehydrated with very hot water ( + a bit of soap ) in a tub...." Read more

"Be sure to break it up and place the chunks in one at a time or it gets messy. I use this to grow mushrooms and it works well." Read more

"...ORIGINAL review 12/24:this is amazing stuff - clean, sterile, perfect consistency...." Read more

"...It is clean, odorless and was the cheapest price I could find on amazon. It is perfect for an ebb/flow system since it absorbs moisture very well...." Read more

STARTING: How Much Water to Begin
4 out of 5 stars
STARTING: How Much Water to Begin
First time buyer of coco-coir. Here's what you need to know to begin using this product.I put the brick of coir in a wheel barrel with 4 gallons of warm/hot tap water. Use better water if you're extremely serious about ph and all that. I don't go to those measures personally.Walk away. I came back the next day to find the coir brick (saturated) and I began to break it up. 4 HOT gallons of water was perfect.The end of this review is to tell the reader how many US Gallon containers this will fill. If you T A P the pot on a hard surface a few 2-3 times to settle the potting mix you will get 17 gallons of media.If you don't T A P the container you will get barely short of 20 gallons of media. Call it 20.My third photo I made a "snowball" with the potting mix to see if it held together and it DOES NOT. That tells you that it's the perfect moisture consistency (Not TOO WET) to mix in your other ingredients AT THIS LEVEL OF soil-media consistency. My attempt at the snowball fell apart 100% and nothing stuck to my hand. It's the perfect level for mixing in your other organics and perlite or vermiculite or whatever else you may use; sand, etc.Hope this helps you'all!
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Top reviews from the United States

Mynda Taylor
5.0 out of 5 stars Coir Block
Reviewed in the United States on April 10, 2024
Verified Purchase
Perfect for me to use for my plants and garden. Coir holds moisture and I mix it with other mediums like perlite. Fascinating to watch expand.
One person found this helpful
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Laura & Charles Isaac
5.0 out of 5 stars Love it
Reviewed in the United States on June 15, 2024
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I uses thisnun my raised bed garden and it worked very well
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C. Friend
5.0 out of 5 stars Amazing for making affordable, rich, natural pottng mix
Reviewed in the United States on March 30, 2016
Verified Purchase
Wow! Fully impressed by the rate of expansion, absorbency, drainage, and texture. This is my forst experience replacing peat in my homemade potting mix with coconut coir from a brick. I used 1/5 of the large brick to make the equivalent of an 8 cu ft bag of potting mix. I had zero trouble reconstituting it. It was super fast. I had my husband use a vise and sawsall to cut my brick up for me. Then I put one of the 5 slices into a large trash bag in the shower, turned the water to hot and doused it good. I was afraid of overwatering, so I stopped and used my hands to break apart the few chunks that were still semi dry, and was surprised to find how easily it came apart. Within just a few minutes of hand crumbling and adding more water a little at a time, it had grown to 8x its original size and was ready to use. I added about 1 cu ft of perlite (light volcanic mineral balls that keep roots loose for further transplants) and 2 1gal buckets of soil with wormcasings from the area of my yard where bad apples fall. Perfect, dark rich potting soil with great drainage and organic nutrients without the need to haul around heavy bags or pay so much at the store. Repotted my tomatoes already and my order just got here this morning. Super pleased and will be buying more for next spring! Hoffman 16504 Horticultural Perlite, 18 Quarts
7 people found this helpful
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Thuy
5.0 out of 5 stars My mom liked it
Reviewed in the United States on November 8, 2023
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Even though the package was small, it expanded into a good amount with water added. My mom was able to use one package all over her little garden. Smell is okay. Definitely worth the money.
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Evan S.
4.0 out of 5 stars Great Product for the price
Reviewed in the United States on November 9, 2018
Verified Purchase
Let me start by saying I keep reptiles... Lots of reptiles, its hard to find an acceptable solution for those that want a naturalistic substrate that is cost effective when you have 10 enclosures that total up to around 140 foot of floor space. That is where this product shines. It holds humidity extremely I've not had any mold issues even with some of my more humid enclosures. Promotes phenomenal sheds in all my snakes with close monitoring of humidity and temps. It is a fine coir so for smaller reptile species feeding wet prey items is not recommended as it risks impaction and nobody wants that! I would compare this to any number of the other Forrest floor type bedding's that are sold in the pet trade. Be warned though one brick of this will easily fill a large rubber maid tote with coir. So if you are looking to fill a large amount of small enclosures or a few rather large enclosures this a definite option. *A side note... I only gave the product 4 stars because i have found strings and plastic debris in my most recent order of this product*
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Evan S.
4.0 out of 5 stars Great Product for the price
Reviewed in the United States on November 9, 2018
Let me start by saying I keep reptiles... Lots of reptiles, its hard to find an acceptable solution for those that want a naturalistic substrate that is cost effective when you have 10 enclosures that total up to around 140 foot of floor space. That is where this product shines. It holds humidity extremely I've not had any mold issues even with some of my more humid enclosures. Promotes phenomenal sheds in all my snakes with close monitoring of humidity and temps. It is a fine coir so for smaller reptile species feeding wet prey items is not recommended as it risks impaction and nobody wants that! I would compare this to any number of the other Forrest floor type bedding's that are sold in the pet trade. Be warned though one brick of this will easily fill a large rubber maid tote with coir. So if you are looking to fill a large amount of small enclosures or a few rather large enclosures this a definite option. *A side note... I only gave the product 4 stars because i have found strings and plastic debris in my most recent order of this product*
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6 people found this helpful
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Norma McL
5.0 out of 5 stars Directions: (1) Engage brain before adding water . . .
Reviewed in the United States on February 25, 2018
Verified Purchase
I love the convenience of storing small blocks rather than big sacks of soil. And I really like having a lightweight option; I am weary of lugging heavy sacks of much of anything around. This is a coarser product than what you need for germinating seeds, but seed-starting coir blocks are available, and I recommend them for germinating seeds; a lot of potting soils peddled for seed starting are too coarse, and given that a seed already has all its necessary nutrients inside it, the finer coir is a very nice option because it doesn't have all the additives. But this grade of coir is excellent for repotting seedlings and mature plants, and it functions well as a mulch.

I am well familiar with the coir blocks, but this is the largest one I've ever bought. Be advised that it makes a LOT of potting soil, and hydrating it requires a bit of thought (certainly more thought than I gave it initially). Choose a large--and I mean LARGE--container to hydrate it in, and choose one that is wide and low (like a standard galvanized bucket or an oversize plastic storage bin) rather than anything that is taller than it is wide. My experience shows why:

I thought I was safe hydrating the block in a tall, sturdy plastic container of ample size that I use to empty large sacks of dogfood in, and the result was a fiasco. The plastic bowed out to the extent that it seemed close to bursting. The container was large enough, but the water was trickling down at a slow pace that hydrated the coir unevenly. I was right there to witness my mistake, so I tried quickly to transfer it out of my ill-chosen container. Unfortunately the mass seemed stuck and would not budge. I knew I would have to add more water to get it unstuck, but what if the lower chunks hydrated before the top ones and burst the plastic? I had to get water to the lower chunks quickly enough that it would budge but wouldn't have enough time to fluff up fully.

If you've never seen the episode of "I Love Lucy" that focuses on her first bread-baking experience, watch it sometime. I was as rattled as Lucy Ricardo when her bread dough engulfed her stove and threatened to take over her kitchen.

Save your nerves. Be smarter than I was. Give some thought AT THE OUTSET to what kind of container you need, and don't choose anything tall.
28 people found this helpful
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Amazon Customer
5.0 out of 5 stars Great quality!
Reviewed in the United States on May 14, 2024
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Fast shipping and great quality! Has took my gardening skills to the next level.
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David Teston
5.0 out of 5 stars Goid amount of soil
Reviewed in the United States on April 17, 2024
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This block makes a lot of soil.
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