Where to buy amendments

These minerals should be available at your local farm supply store:

  • Ag Lime
  • Dolomite Lime
  • Gypsum
  • Rock Phosphate
  • Bone Meal
  • Magnesium Sulfate (Epsom Salts) Small quantities are at the drug store in the laxative aisle.
  • Potassium Sulfate
  • Sul-Po-Mag (K-Mag or Langbienite)
  • Ag Sulfur
  • Feather Meal (may be listed as a feed, or available at the feed store instead)
  • Soybean Meal (may be listed as a feed, or available at the feed store instead)
  • Kelp

If you have a small area you may be able to find smaller quantities at your local garden supply store. These amendments may also be found online at Peaceful Valley Farm Supply.

The sulfates are available online from Alpha Chemicals. These include:

  • Iron Sulfate
  • Manganese Sulfate
  • Zinc Sulfate

From the grocery store in the laundry products aisle:

  • Borax

Source for BioMin copper:

Source for Phosphoric acid stabilized fish hydrolysate (approximately 2-4-0)

Other sources for amendments are listed below:

Peaceful Valley Farm Supply, Grass Valley, CA  www.groworganic.com

Black Lake Organics, Olympia, WA  http://www.blacklakeorganic.com/

Seven Springs Farm, Floyd County, VA  http://www.7springsfarm.com/

Lancaster Agricultural Products, Ronks, PA http://www.lancasterag.com/

Concentrates, Portland, Oregon  http://www.concentratesnw.com/
We carry many natural/organic custom fertilizer blends, and we can have custom blends made to your specs or our recommendations in 1 ton lots or more, in bulk totes or bagged. heather@concentratesnw.com

Grow Organic, Hood River, OR  http://groworganics.org/ (no shipping)

Keep It Simple, Inc., Redmond, WA
www.kisorganics.com for online orders
1-425-558-0990. Small quantities of minerals. Potting soil & more.

Where to find minerals in Canada:

I usually buy everything from the local feed store (Buckerfields is one of them, I also buy from a commercial outfilt called Evergrow in Victoria. also Integrity Sales in Victoria ), and there are some stores out here on the West Coast that are more organically oriented and have a better selection (Borden Mercantile in Victoria, for instance). Many of these stores are able to source special products
You can get almost anything online from the Organic Gardener’s Pantry in smaller quantities.


Using different amendments than the ones OrganiCalc recommends?

Click here to calculate the correct amounts using our Amendment Converter

Please be sure to read our General Recommendations. It’s full of timely and pithy information critical to success!