grocery store charcoal

[weederwoman]

I just want to double check that no one has had adverse effects from using the all-natural-wood-only type of charcoal sold bagged in the grocery. Got the hint here on the board to buy this and break it up to the size needed for potting. I have lots of very fine horticultural charcoal but it is too fine for my potting and just settles out to the bottom of the pot. I like the idea of custom chunking the charcoal to fit the mix. Yes, I'm prepared to get filthy.

Laurel

[katrina]

What kind are you thinking about getting?

If it's just plain hardwood charcoal it *might* be ok but definitely avoid any that have the accelerants in them as those would be toxic to plants.

[Laserbeak]

I wouldn't use charcoal briquettes meant for grilling. First, they probably have other chemicals added that may be harmful to your orchids. Plus, the whole idea of charcoal is to have intact pieces that have channels that absorb toxins and stuff that go through the pieces, but charcoal briquettes are powdered and then pressed back together, which may make them useless for that task.

[DocRN]

Plain chunk hardwood charcoal is great stuff for orchids. I have used it for years, I just bust it up with a hammer to get the sizes I need. I use large chunks all by themselves for my vandas in baskets. It doesn't rot, it's light weight, and keeps them stable. the only negative is it does absorb chemicals , including fertilizers, so if you use a lot of it, you will need to feed regularly.

[jeremyinsf]

Horticulture-grade stuff is super cheap and comes 'worry free'. Perhaps you need other supplies as well?

http://www.calwesttropical.com/index...ories/charcoal

[weederwoman]

docrn

Yes, the chunk stuff is what I mean. Do you have one brand you use most.

[DocRN]

Yup, 'Cowboy' and I get it at Lowes. Open the bag to it air out, it is often very fresh and still has the 'burnt' smell.

[WaterWitchin]

Been using lump hardwood charcoal for years and years on all kinds of plants, and filtration.

And it also cooks an excellent steak.

[weederwoman]

Thanks. Now you're making me hungry.

Laurel

[WaterWitchin]

MMMMMmmmm... with a salad, perhaps a small baked potato? The steak, of course, not the orchid.