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cocoa husks as substrate?

jgragg Aug 29, 2009 11:43 AM

Hi all,

I happened to be at the nursery this morning to pick up some nuke-bomb herbicide (f'n ivy!). On my way out I saw an interesting-looking product.

Cocoa husks (the hard shells from cocoa beans, I guess) are apparently bagged and sold as an organic mulch (I saw 2 cu ft for $12). There was some on the ground where a bag had failed, so I got my hands on it. The little pieces are sort of round and cupped, very light-weight, and about the size of my pinky fingernail (whole nail, not a clipping).

It occurred to me that this stuff could serve nicely either as a stand-alone dry substrate, or as a cover-layer for something more moisture-retentive (say, fine coir). Much as one can do with live-oak leaves over soil. I'd think a blood python, gaboon viper, etc would snuggle down very happily into it. Or even something like a sand boa or sand viper in a dry set-up.

It looked really easy to spot-scoop (unlike oak leaves). An added feature is a slight chocolatey aroma.

Anybody else seen or used this stuff? I think it has potential. BUT, on the other hand there's this warning for oral ingestion at least:
http://www.snopes.com/critters/crusader/cocoamulch.asp

Apparently it's loaded with methylxanthine alkaloids (e.g. caffeine). On the basis of this, I wouldn't keep lizards or turtles on the stuff - they'd likely eat some of it, regularly. And of course amphibians are out of the question.

Any veterinarians or physicians here? Is dermal uptake (in squamates) a concern here?

cheers,
Jimi

Replies (1)

markg Aug 30, 2009 10:24 AM

I'm curious too. I've used it in planters in our backyard - makes it smell like chocolate back there for a few days, not kidding.

It is very light in weight, and judging by our garden, it doesn't seem to mold. Hopefully someone can answer about the effect of the natural caffein in it. It would make a good substrate for certain species (I'm thinking milksnakes, boas) if safe.
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Mark

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