One of my subscribers asked for a source of worm castings in bulk, so I sent out a query to my subscriber list asking for recommendations. Thanks to everyone who provided some leads!
I contacted each of the sources and/or constructed the list below from their websites. However, I’ve indicated which sources haven’t yet responded and so I consequently can’t confirm the information provided by a subscriber or the website.
For the full information I gathered, see the spreadsheet on my website under Weblinks – http://www.gardeninginla.net/web-links.html - at the bottom of the righthand column. I’ll post updates of the list as I receive new information.
I visited the Los Angeles Worm Farm Collective during one of its workdays and talked with the enthusiastic members. Keshy Jeong, was kind enough to take these pictures of the process.
Worm Castings and Tea Resources in Southern California (in alphabetical order)
Anna Marie Carter
Castings in 20, 50, 100 lbs. and bulk orders. Teas in 5 gallons and up.
Compost Worms and Bins (no response)
Da-Le Ranch (no response)
Los Angeles Worm Farm Collective
Norwalk and Atwater Village
Castings $5/gallon or $1,000/cubic yard. 5-50 gallon quantities can be picked up in Atwater (in Northeast LA near Glendale), preferably on the 3rd Sunday morning of the month. Delivery with an additional fee may be possible depending on the location.
Mark LeGrand (no response)
Organic Solution (no response)
Castings, 6 qt, $14.95, and larger quantities. 16 Where To Buy locations in Southern California.
Rainbow Mealworms (no response)
5 lb, $16.97, free shipping
The Worm Wrangler
Castings in 3, 5, 10, 20 lbs. at $1 per lb.
Triformis Corporation (no response)
VermisTerra Organic Soil Amendment (no response)
VermisTerra Earthworm Castings, 10 lb, $35.99. Earthworm Casting Tea, 1 quart concentrate, $26.99. Larger quantities available.
Whittier Fertilizer (no response)
Website information includes no prices or quantities.
Yamada Company (no response)
According to a subscriber, Yamada sells castings and many other garden products, and is generally “something like 40% less than you'd pay most anywhere else. For example, Grow More Seaweed Extract, one quart, is, as I recall, $11.99 at Armstrong and $12.95 at OSH. At Yamada, $5.95.”