Where to source amendments

From your local farm supply or hydro grower’s supply store:

• Ag lime
• Dolomite lime
• Gypsum
• Soft rock phosphate (see below for Fertoz)
• 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 (Tiger-90)
• 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.

From Alpha Chemicals

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

• Iron sulfate
• Manganese sulfate
• Zinc sulfate
• Copper sulfate pentahydrate
• Sodium molybdate dihydrate

From the grocery store

In the laundry products aisle:

• Borax

Source for BioMin copper:

• Pints
• Gallons

Source for Cobalt sulfate:

• ebay (US) and ebay (Canada)

Source for Fertoz soft rock phosphate:

• Fertoz (offices in the US and Canada)

Source for Wollastonite:

• Concentrates (Portland OR)
• Fedco Seeds (Maine USA)

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

• Peaceful Valley (California) – 1.7-7-0 – Gallons
• Neptune’s Harvest (Online) – also sold on Amazon
• Peaceful Valley (California) – 2-3-0.5 – Gallons
• Also check locally at garden centers and hydro stores

Vermicompost

• Black Diamond Vermicompost

Online amendment sources:

• 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/
• 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.
• New Country Organics, Waynesboro, VA https://www.newcountryorganics.com/

Where to find minerals in Canada:

• Local feed stores. Buckerfields is one of them.  Also a commercial outfit called Evergrow in Victoria. Also Integrity Sales in Victoria. 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
• Black Swallow Living Soils (thanks for the link, David!)
• Alpha chemical resellers may be found on Amazon.ca or ebay.ca