Customer Reviews

65
4.9 out of 5 stars
Hoffman 17502 Charcoal Soil Conditioner, 24-Ounce
Price:$10.69 + Free shipping with Amazon Prime
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21 of 21 people found the following review helpful
on March 22, 2011
Verified Purchase
I had a really hard time trying to find planting charcoal for terrariums, and was so pleased when I finally found a decent size bag for purchase on amazon. I literally went all over nyc trying to find this stuff. My terrariums look great!
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23 of 24 people found the following review helpful
on March 4, 2011
Verified Purchase
Like the first reviewer, I checked a couple of local outlets before finally ordering this from Amazon. I intended to use it not in soil but to filter water, not for drinking but for bathing and for plant use (both collected rain and city water). I take tub baths and had been looking into chlorine filters for the tub, most of them seeming overpriced. I folded about a cup or so into a bandana and tied it around the tub spout. It took a little adjusting to make sure most of the water ran through it but the usually overchlorinated city water was significantly less chlorinated and did not sting my eyes and nose as it normally does. If I used it for nothing else it would be a good bargain. Going to try making 2-3' hose sections with screen ends when the growing season starts, and using those as a filter, as well as a filter from the downspout to the rain barrels.

A good deal, although I do wish I could have found it in my usual shopping areas. I was surprised there wasn't any horticultural/aquaculture charcoal at the home warehouse store near us, especially considering they sell pond equipment.
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16 of 16 people found the following review helpful
on December 12, 2011
Verified Purchase
This plant charcoal works very well, keeps my terrarium fresh and keeps plants disease free. A must have for serious horticulturalists
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13 of 13 people found the following review helpful
on March 25, 2012
Verified Purchase
I use this under the soil layer in my terrariums. It is awesome! No mold or odor with this stuff in a terrarium. Also small flakes so convenient for situating how you want it.
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9 of 9 people found the following review helpful
on March 21, 2013
Verified Purchase
I use this stuff in my own custom orchid mix. I do two parts of orchid bark, one part moss, one part charcoal. The orchids seem to love it. I live in a really humid area and the charcoal helps to absorb any toxins or bacteria gathering on my orchid roots. It's a MUST for people who grow Phals.
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8 of 8 people found the following review helpful
on March 6, 2013
Verified Purchase
I used the charcoal soil for promoting growth and controlling the smell that terrariums may produce due to it's humid nature. I got the idea from Martha Stewart and other DIY terrarium sites. Growth was noticeable within days after the transfer of containers and no smells yet! It's a small bag, but it depends on your mixture of potting soil vs. charcoal soil. Be careful when shoveling or pouring out, especially if used indoors, because it does get dusty.
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14 of 16 people found the following review helpful
on February 11, 2013
Verified Purchase
It's charcoal. It does what it is supposed to do, sweetens the soil. The chip sizes are the right size for small and large pots and if the plant is already potted,I just sprinkle it on the top of the soil and when you water, the dust will trickle on down. It is well packaged in a re-sealable heavy plastic bag so there is no dust everywhere. When repotting, I rinse the dust out with cool water through a sieve, drain well and proceed with the potting. I've used it for years and this is a favorite brand.
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13 of 15 people found the following review helpful
on June 10, 2008
product is great! Size of particles fit nicely in potted houseplant container. Searched many places before turning to the internet.
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4 of 4 people found the following review helpful
on January 6, 2013
Verified Purchase
These are really big bags. I purchased two but only needed about 1/2 of one bag. Volume wise I would say it is about a grocery bag full. This was significanty less expensive then my local garden store (which is why I bought 2 bags, at the price I had thought it would be less product)
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3 of 3 people found the following review helpful
on August 6, 2014
Most people don't know just how valuable biochar is for a garden. I don't have the need for very much as our garden isn't that large (yet) so I bought this. I make worm castings (vermicompost) tea and mix the sludge after straining with this biochar before adding to my soil. Absolutely amazing results, esp if you spray the leaves with the tea. If you have some time to kill, to get an idea of the symbiosis of how biochar works for the roots of plants, you should watch some youtube videos. The best one i've seen is the second in a series by a guy who makes it commercially. The best stuff is starting at about 10 minutes in. Just copy and paste the following into youtube search .... Biochar Workshop Part 2, Why to Make Biochar
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