Steve Solomon’s Complete Organic Fertilizer
March 9th, 2010 by Farmer K
Steve Swanson is the author of “Growing Vegetables West of the Cascades”, one of only three must-read books for Cascadian farming. (The other two are the “Maritime NW Gardening Guide” from Seattle Tilth and “One Straw Revolution” by Fukuoko.
I have been using variations on Steve Solomon’s Complete Organic Fertilizer (COF) since
2005, in many different locations.
In 2008 and 2009, we reconfigured Steve’s formula with Naomi, who was then at
Concentrates, and now has her own business, Naomi’s Organic Farm Supply, down on
McLaughlin & Tacoma. We found her knowledge very useful, and recommend her custom
“Mineral Mix”.
Here is the COF formula we used in 2009. We made over a literal ton of it, altogether:
- 3 parts alfalfa meal
- 1 part fish meal
- 1/2 part lime (Dolomite and/or Agri-lime)
- 1 1/2 part phosphorus
- 1/2 part trace minerals (1/3 green sand, 1/3 AZOMITE, 1/3 kelp meal)
“part” is by VOLUME and is whatever you decide to use that day. We used 5 gallon buckets
as our “1 part”.
Until 2009, our COF was always vegan, due to 1) ethical (& etc.) concerns of our CSA
customers, and, 2) the sketchy sourcing of animal products such as bone meal, feather
meal, etc. That is to say, who knows what you’re getting, considering everything that’s
used in conventional agriculture these days. Haven’t heard of “free range” feather meal! (As if that would resolve the issues.)
In 2009, we added fishmeal to make up for the relative paucity of Nitrogen in alfalfa
meal, compared to cottonseed or soybean meal. We used alfalfa meal because soybean meal
could be GMO and cottonseed meal is sketchy-as-fuck (cotton, not being regulated as a
food crop, is barraged with toxic chemicals, and yes, that’s the same cottonseed oil that
you see in “Ingredients” on packaged food). Cottonseed was right out, obviously, and we
decided that keeping GMOs out was more important than keeping *all* animal products out,
since the dangers of GMOs are unknown but potentially mutagenic. We went with fishmeal
because it delivers a major bang-for-the-buck (a good thing since it ain’t cheap!) and
fish are: a) often wild, so we are not dealing with animals caged=their-whole-life; b)
are not, to our knowledge, subjected to the same hormones, antibiotics, etc., though we
know farmed fish are also sketchy; and, c) something that were historically introduced to
the soil in this bioregion on a regular basis through their consumption by bears who shit
them throughout the woods.
Does COF work?
In the empirical sense, I do not know. I don’t have enough of a dataset. I have not,
for example, conducted trials with pairs of beds where one is treated and one is for
control. By playing steward to dozens of plots around town over the last few years, I
have observed that using COF at some gardens but not others (which is how it has happened
to go down) has not provided a good comparison. Too many other mitigating factors
prevented that, such as differing soil types, different crops, different
levels-of-attention, different irrigation, different light, etc.
I have used COF when prepping beds, when seeding and transplanting, and as a
side-dressing to growing plants (though not always, for all the times I have down those
things). I feel as though it makes a positive difference, but I cannot provide a record
of physical evidence.
I keep using the COF as an article of faith, frankly.
One amendment I *have* seen work, vividly and undeniably, is AZOMITE. The name stands
for “A to Z Of Minerals, Including Trace Elements”. During the 2009 Staple Crop Project
season, Tom of Mall56 spread a 44 lb. bag of it it in a regularly-shaped rectangular are
in the middle of the field. This was in the Spring, when it was still short. When the
wheat grew taller, months later, there was a *distinct* height difference in that patch;
it was higher. Perhaps in more than one sense of that word; it had a “glow” to it,
somehow, too (which was nothing measurable so if you don’t believe me, I’ve got no
argument with you).
We use AZOMITE when we can’t use the COF, which is often the larger plots for staple
foods, which are measured by the fraction of an acre, rather than square feet. At
Sunroot Gardens, we call it “Magic Fairy Dust” and taste it as we spread it. This year,
I have a small triticale patch that we treated on one side only with AZOMITE, with a
stick marking the halves. We will be watching carefully and can report our findings.













