Use of Iodine to Kill Mold

patrick · Feb 19, 2009

Got some spots of mold growing on the top of the soil in a couple of the peppers. I've read here that iodine will kill mold. What is the mixing ratio of iodine/water to effectively kill it?

I spray it directly onto the mold? Will it cause any problems if it gets on any leaves?

Thanks everyone.

POTAWIE · Feb 19, 2009

For mold, some member have had success with cornmeal, I 've also used a bit of baking soda on top of the soil

Hotpeppa · Feb 19, 2009

Hydrogen peroxide in a spray everyother day until gone would do it i think...

patrick · Feb 20, 2009

Cornmeal, baking soda, hydrogen peroxide all work to kill mold eh? Cool.

Does anybody know how much iodine I need to add to a quart of water for it to be an effective mold killer?

Thanks.

TXCG · Feb 20, 2009

AlabamaJack · Feb 20, 2009

Patrick...I don't use Iodine and it doesn't look like many others do either...sorry to be of no help...

patrick · Feb 20, 2009

Crud. Now where in the heck did I get the idea to use iodine as a mold killer? :oops:

OK, thanks anyway everyone, my bad.

How about the peroxide then? Should I mix it with water? What would be a good ratio?

TXCG · Feb 20, 2009

patrick said:
Crud. Now where in the heck did I get the idea to use iodine as a mold killer?

OK, thanks anyway everyone, my bad.

How about the peroxide then? Should I mix it with water? What would be a good ratio?

About 1-2TBSP (of 3% H202) per gallon of water. Doesn't take much.

TXCG · Feb 20, 2009

Willard said:
* Posted by willard3 (My Page) on
Wed, Dec 17, 08 at 9:51

1 tablespoon/gallon of water of 3% hydrogen peroxide or 500-1000 ppm.

Quick google search to make sure I remembered ratio correctly, found this on gardenweb lol. Thanks willard!

fineexampl · Feb 20, 2009

In my research online i came across a much higher ratio for hydrogen peroxide. for 3% it's about 1/2cup per gallon, and 2-3 tablespoons of the higher percentage version. I've done every other watering with 1/2 cup per gallon and had ZERO ill effects. Apparently it doesn't kill plants at all when diluted like that.

patrick · Feb 20, 2009

Thanks guys, I owe you both one.

POTAWIE · Feb 20, 2009

I'd stay away from iodine, as well as peroxide unless you have root rot problems or are using it to pre-sterilize water or equipment. It(h202) can break down nutrient bonds as well as kill beneficial microbes.

fineexampl · Feb 20, 2009

i got this same link from THP. It's an interesting read.

http://www.using-hydrogen-peroxide.com/peroxide-garden.html

patrick · Feb 20, 2009

Thanks Fe, very useful link.

QuadShotz · Feb 20, 2009

Perhaps related, I tried using the weak chamomile tea method on my germination box, and no mold so far.

IDK about using it for regular waterings though. Can't imagine it'd hurt.

POTAWIE · Feb 21, 2009

Here's a good article with both pros and cons of using peroxide.

http://www.maximumyield.com/ask_erik_article_sh.php?articleID=386&yearVar=2008&issueVar=November
Originally from "maximum yield" Canada Janaury/February 2009

AlabamaJack · Feb 22, 2009

I quit using peroxide in my watering mix because:

From FAQ on Botanicare website..

Q: Can I use hydrogen peroxide with Pure Blend Pro or Liquid Karma?
A: No, hydrogen peroxide will kill off the beneficial microorganisms present in Pure Blend Pro and Liquid Karma.

I use both of these in combination...

Pam · Feb 22, 2009

AlabamaJack said:
I quit using peroxide in my watering mix because:

From FAQ on Botanicare website..

Q: Can I use hydrogen peroxide with Pure Blend Pro or Liquid Karma?
A: No, hydrogen peroxide will kill off the beneficial microorganisms present in Pure Blend Pro and Liquid Karma.

I use both of these in combination...

Huh, we're going to get you going natural yet!

Use of Iodine to Kill Mold

Banned