Coco-Fiber Planting Medium
$9.99
Each
Description
The perfect sterile growing medium. Use this expandable brick of all-natural coconut fiber (coir) to enhance your soil, making it easy for plants to stretch out their roots. Loosens hard clay soil and adds water-retaining fibers to sandy soil. Resists compacting and remains porous for air circulation. Made from coconut husks. Expands to over 2 gallons when you add lukewarm water as directed. Each brick breaks down into enough coir medium for approximately 4 trees.
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Customer Reviews
80 Ratings
1 Customer Photo
1-10 of 80 Reviews
Rated 5 out of 5
Jul 21, 2025
Good product
Directions to moisten and expand the blocks are clear and worked when followed. I'm glad they store well, because I bought a 6-pack and didn't use as many as I thought I would. Now, I'll have some ready for early next year projects.
Rated 5 out of 5
Mar 3, 2025
Will keep using as planting.
Every tree I have put this under just before planting it has been growing impressive.
Rated 5 out of 5
Feb 9, 2025
Environmental friendly in a win win
I bought this to try it and see if it was as good as dirt. It worked well. I'm very glad I bought it and ended up buying 3 more. I don't use it buy itself?. I mix it with dirt and perlite. It saves on the cost and helps with the environment so it's a win win:
Rated 5 out of 5
Jan 30, 2025
Soil Bricks
So easy to use and set up plus it's a lot lighter! Helps aerate the soil mixes well and holds water well
Rated 5 out of 5
Oct 8, 2024
great to mix with potting soil.
great to mix with potting soil. I also use this to start seeds. It is great for holding moisture
Rated 5 out of 5
Sep 10, 2024
All of my fruit trees and bushes have been Stark Bros. purchases and are doing very well.
This worked beautifully in helping me fill my planters for a beautiful harvest.
Rated 5 out of 5
Aug 20, 2024
Nice for staring seeds. Holds moisture pretty well. Sometimes I mix it with Promix microrrhiza to get the good fungi.
Rated 5 out of 5
Aug 20, 2024
Excellent soil amendment
I think coir bricks are great! Very useful for improving soil. I happen to like the Stark Brothers coir best. You'd think shredded coconut husks would be interchangeable, but the coir Stark Brothers sells just seems to have a better texture, somehow.
Rated 5 out of 5
Aug 10, 2024
Panting must have!
It's the perfect edition to getting trees and plants off to the best start! It's easy to use and store well when you order items in advance.
Rated 5 out of 5
Jul 10, 2024
Lasts a long time
This was a really great product. The small brick expanded a lot, and it lasted a long time! I just mixed it in with potting soil to make a better potting soil from all my plants and seed starting.
Very effective moisture retainer here in central valley of California
I’ve found that using coir when I’m doing new plantings really does seem to help shrubs and young trees get established. I’ve tried using some other brands of coir, but think that the Stark Brothers…
Want to try this in my greenhouse this winter / spring to start plants.
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