OMRI Clarification - Gardner and Bloome

hops_on_popApril 16, 2014

Been looking for an organic potting soil and was recommended G&B Organic Potting Soil and Blue Ribbon Potting Soil by local hardware store.

I looked them up on OMRI and saw all Gardner and Bloome products are listed as Iron Products and saw this caveat:

May be used as a plant or soil amendment only with a documented iron deficiency.

I'm very new to vegetable gardening and was unsure what ingredient would cause that listing:

Potting Soil:
All organic ingredients of fir bark, forest humus, peat moss, perlite, chicken manure, worm castings, bat guano, kelp meal, alfalfa meal, with oyster shell and dolomite lime for pH adjusters.

Blue Ribbon Mix:
A composted blend of Canadian sphagnum peat moss, screened fir bark fines, forest humus, pumice, chicken manure, worm castings, bat guano, kelp meal & alfalfa meal.

I've seen a few threads on here with others that have successfully used their products and are happy with them but I want to know exactly what's going into my mix.

Thank you for reporting this comment. Undo

It probably has added non-organic iron in the mix...such as ferric oxide or ferric sulfate. It's a legally allowed use of a restricted substance.

One reason I advise most people who want to be organic to form their own opinions/methods on what matters to them and what limits whey want to enforce rather than going by "certified" status is because of stuff like this.

Here we go...

Okay, adding something like this to a soil, potting mix, disease/weed/pest control, or fertilizer can be approved if the product can be proven it's deficient in it and the people producing it pay for each product they want certified to be tested.

You'll also find non-organic copper, zinc, cobalt, manganese, and molybdenum in this same class of "non-organic product in a certified organic product" use occasionally.

For the most part this is allowed because we're talking about extremely small amounts of additions of things which aren't toxic (or even close to it) in the amounts added as well as aren't in danger of leaving harmful amounts of well it being hard to naturally get these substances available and balanced in many applications of use.

Some people find this sketchy...the organizations that certify as well as the industry finds it pretty much harmless even if not fully organic in full faith.

    Bookmark   April 17, 2014 at 2:19AM
Thank you for reporting this comment. Undo

Thank you for the detailed response.

I appreciate the information and wondered if there was an ingredient that wasn't listed or if there was more to one of the listed ingredients that I didn't know about.

    Bookmark   April 17, 2014 at 12:15PM
Sign Up to comment
More Discussions
rescuing a defunct flower bed
We bought our house a year ago and now want to replant...
Need advice on watering succulents with new soil
I recently began using soil-less soil, as has been...
Compost is wet and soggy. Can I use it? It's not done yet..
Hi there. My first compost is almost a year old now....
Mikkel Nielsen
Clay addition to dry sand soil help
I have sugar-fine, sandy soil amended with compost....
Planting in area covered with "playground" wood chips
I need some advice... I recently had a small playhouse...
Sponsored Products
Hudson Valley Gardner Polished Nickel Ceiling Fixture
Lamps Plus
Gardner Semi Flush Mount
Tribal Bloom Clock
$25.99 | Dot & Bo
Graham & Brown Flourish Wallpaper - 30-432
$50.00 | Hayneedle
Home Decorators Indoor/Outdoor Area Rug: Home Decorators Collection Rugs Blooms
Home Depot
Las Cruces Collection Quoizel Three Light Pendant Chandelier
Lamps Plus
Prandina | Gong Mini 3 Pendant Chandelier
Tiger Lily Area Rug - 3'6" x 5'6"
Grandin Road
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™