The Josephine Porter Institute

Biodynamic Pfeiffer™ Field and Garden Spray

$31.16 USD

~~$31.94 USD~~ $31.16 USD

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3 stars: 1 (5%)
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The One

These preparations are the purest quality that I have ever sourced. I know they have been made with tender loving care and the finest of ingredients. Absolutely in line with our farm’s 178 year tradition of biodynamic farming practices.

We are currently amending a large garden with mostly clay soil. Once that has been completed, we will make and spray the product around the area. Unfortunately, we don't have a current experience to offer. Spring may be our best tell tale when it has had time to work with the elements. Thank you

Such high quality products. Bless yall for making these preparations.

Biodynamic Pfeiffer™ Field and Garden Spray

Field and garden spray

It's not only for farms and gardens, but for the whole earth. My flowers and trees are so vibrant from its use, the neighbors are interested in what it is that I'm doing differently in the yard. Essentially the only difference is using field and garden spray. In the light of the harms coming to the Earth from data centers and fracking extraction practices, there are small things we can do to help nature in our yards and communities. Working with the BD preps is one of them. I'm grateful for the Josephine Porter Institute for making these preps available!

BD 508 and Field and Garden spray received safely.

I received both BD prep last week, my daughter hand carried from CA. The BD 508 is being fermented now will be ready for use around 1st week of March. I am reading more about the Field and garden spray for guidance on how to use it. I will surely update you with the results. Thank you for allowing me to be a part of this wonderful mission.

The Place

This is the place of knowledge and understanding of many great ideas. They are My connection to the past.

Eridanus

I mixed the Pfeiffer Field and Garden spray with some lukewarm pond water from my backyard.
Since it has this dusty texture like cocoa powder it takes a bit to absorb with water.
So I did let it settle till following afternoon as recommended and then just kept stirring & stretching it with water.
Over yet another 12 hours I kind of applied all of it to front and backyard.

High expectations !

The Preparation arrived here this morning - i have stored the llittle plastic bag in a big terracotta pot on top of manure-compost made with QR, covered with a fitting wooden lid, dark and moist and cool. Today is a day of 'cosmic chaos', and according to Pappa Wiebe Soepboer, a good time for new beginnings.

Biodynamic Pfeiffer™ Field and Garden Spray

BD Pfeiffer Field & Garden Spray

Thanks for the shipment. I have to admit that the Uline padded mailer #4 was a trifle tight, so the contents were somewhat cumpled. I appreciated being able to pay in Canadian dollars, but resented the customs duty Canada imposed to pass the border. Not your fault, but that of the Orange Man in Washington. I won’t rate the spray, but have no doubt that it wlll be superb. As yet, no time to use it.

It's too early to tell this season.

But in the past I seem to have had good results both in my container garden and when I use it in active aeriated compost tea.

Biodynamic Pfeiffer™ Field and Garden Spray

Magical!

I’ve been using Pfeiffer Spray on our tiny yard several times a year for years. Our plants thrive, and I value its impact on the neighborhood and the universe 💫✨

Field & Garden Spray and my pecan crop

I began using this product 2 years ago. I am not that knowledgeable about biodynamic preparations so using this product was a good start for me. I have lived on my 2 acres (with poor quality soil) for 12 years now. The previous owners used pesticides which I do not use. I have been hoping that eventually the trees would recover from the pesticide use, and then I would have a good crop. Last year was the first year that I had an amazing pecan crop from my 15 trees. (I had even enough to donate to the local food bank.) I wasn't expecting another crop this year because we are in a drought situation. Yet, I have another amazing crop. It has to be the Field & Garden spray. I have done nothing else different than using this product for the last two years.

Too Soon to Tell Much

I did receive my order in a timely manner, and had the instructions as to what to do with it, but did not have time to put it on my compost piles between 8/7 and 8/10 or there abouts. I will update later, after I spy my next window of opportunity, hopefully. I look forward to upgrading biodynamically in the garden!

Biodynamic Pfeiffer™ Field and Garden Spray

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Description

One unit is 2 ounces.
One unit treats up to 1 acre.

At a glance:

What it does:
Supports soil life and field vitality, especially on land that hasn’t yet received regular BD 500 and BD 501. Useful for farms beginning biodynamic work or those needing extra help restoring balance.

How to use:
Moisten one unit in a flat pan or dish with just enough water to make it pasty. Allow it to activate for 12–16 hours or overnight. Dilute the paste in the amount of water your sprayer is calibrated to apply over one acre. Spray close to the soil during the latter part of the day on a calm day.

Ingredients:
Dried blend containing BD 500 Horn Manure and BD 502–507 Compost Preparations, plus beneficial soil organisms and other agents.

🌾 Learn More about Pfeiffer™ Field and Garden Spray

Product Details:

Among our most popular selling items, Pfeiffer™ products were originated in the 1940’s by Dr. Ehrenfried Pfeiffer with the purpose of helping to make biodynamics more accessible to home gardeners, conventional farmers, and composters. JPI is the exclusive owner of these proprietary formulas.

Published grower accounts describe Pfeiffer™ Field and Garden Spray in vineyard practice. Explore the reported results and conditions of use, alongside historical experiments and detailed source notes.

The Pfeiffer™ Biodynamic (BD) Field & Garden Spray contains all components included in the Compost Starter plus additional amount of BD 500. Use when planting or transplanting to stimulate germination and root growth and when turning in cover crops to increase soil microorganisms that aid in decomposition and transformation to stable humus. It may also be used on houseplants or as a bath for seeds and bulbs, as described in the handout. One unit may be divided to treat smaller areas. It is an excellent treatment for gardens, pasture, and hayfields of all sizes.

Composition of the Pfeiffer™ BD Field and Garden Spray
This potent spray contains the biodynamic agricultural preparations BD #500, #502, #503, #504, #505, #506, and #507, which give this product its unique effectiveness. It stimulates and attracts a full range of soil micro-flora and fauna beneficial to accelerate the breakdown of organic matter without tying down nitrogen or other delaying actions. Following such breakdown there is a subsequent build up into helpful humus compounds. Properly activated for use, each ounce can yield more than 5.6 billion CFU’s (colony forming units) of beneficial organisms.

Benefits of the Pfeiffer™ BD Field and Garden Spray
The BD Field ; Garden Spray aids humus formation in organic materials already in the topsoil. It should be used when planting and transplanting to stimulate germination and root growth, and when turning in cover crops to aid the transformation of organic materials into humus.

One unit of BD Field & Garden Spray treats one acre of land. It comes in single or multiple units but one unit is the smallest quantity we can ship. If your garden is less than one acre, activate only 1 level teaspoon (1 tsp.). This will give coverage for 1,000 square feet. Activation of 1 level tablespoon (1 Tbsp.) will cover 3,000 square feet.

Pfeiffer™ Field and Garden Spray Detailed Usage Instructions: English | Chinese

Please note: Quantities over 1 may be bagged together.

Learn more: Pfeiffer™ Field and Garden Spray guide

Published results & grower experience

Bring biodynamic preparations into your soil and field management.

Pfeiffer Field and Garden Spray is formulated for soil and field applications, including work with incorporated crop residues. Published vineyard accounts offer a practical example of its use alongside cover-crop management.^{1, 5, 6}

The Grgich Hills experience

In a published interview, Ivo Jeramaz described a comparison begun in 2007 with fifty treated acres and a fifty-acre control. Juice nitrogen in five of six treated blocks reportedly rose from approximately 150 ppm the previous year to 200 ppm after Field and Garden Spray use.⁵

A later account identifies the measure as yeast-assimilable nitrogen (YAN) and reports no increase in the untreated blocks. YAN describes nitrogen available to yeast in grape juice. These are published grower accounts of a commercial comparison; they do not supply a randomized statistical analysis.⁶

A grower's recommendation

Jeramaz's interview, published in Winter 2010-2011, includes this recommendation:

Nonetheless, I would highly recommend it where possible, especially if you have good moisture and good cover crops.⁵

Moisture and management mattered. The interview reports little improvement in dry 2008 and later discontinuation because of application logistics. The 2015 account describes dry-year exceptions and eventually reducing annual application when YAN became too high for the wine being made. The accounts differ in their follow-up chronology.^{5, 6}

Put the experience to work

Follow the current product instructions for preparation, coverage and application timing. Record your cover crop, soil conditions and application date so that the reported experiences can inform your own observations.¹²

Sources for this product section

Josephine Porter Institute, current product descriptions: Biodynamic Pfeiffer Compost Starter and Pfeiffer Field and Garden Spray. Consulted September 27, 2026. These identify current products and intended applications; the historical comparisons are documented separately below.
Hunter Francis, "Biodynamics Taking Root in the Legendary Napa Valley," interview with Ivo Jeramaz, Applied Biodynamics 71 (Winter 2010-2011), p. 5. Vineyard comparison, follow-up conditions and recommendation.
Abigail Porter, compiler, "Anecdotes: Pfeiffer Biodynamic Field and Garden Spray," Applied Biodynamics 87 (Spring/Summer 2015), p. 17. Vineyard account attributed to Joseph Brinkley's experience. Its phrase "50 mg" lacks a denominator; the surrounding discussion uses mg/l. The numerical table in this guide uses the 150-to-200 ppm values in reference 5.
Josephine Porter Institute, Pfeiffer Compost Starter instructions, Field and Garden Spray instructions, and preparation-instructions directory. Consulted September 27, 2026. Use the current instructions supplied for the product being applied.

Explore the full references and study context →

Frequently Asked Questions

How do I use the Biodynamic Pfeiffer™ Field and Garden Spray?

Moisten one 2-ounce unit with just enough water to make a paste and let it activate for 12–16 hours or overnight. Dilute it in the amount of water your sprayer needs to cover one acre; spray close to the ground on a calm day in the latter part of the day. Clean spray equipment first.

What is included in the Biodynamic Pfeiffer™ Field and Garden Spray?

The dry blend contains BD 500 Horn Manure, BD 502–507 compost preparations, beneficial soil organisms, and other agents. It is intended for biodynamic field and garden soil treatment.

How much area does one unit of the Pfeiffer™ Spray cover?

One 2-ounce unit covers one acre. For a smaller area, activate 1 level teaspoon per 1,000 square feet or 1 level tablespoon per 3,000 square feet; use enough carrier water for even coverage.

Where can Pfeiffer™ Field and Garden Spray be used?

JPI uses this spray to support living soil in gardens, fields, pasture, and hayfields, including land beginning biodynamic care. Current instructions also describe houseplant and seed-or-bulb bath applications. Follow the directions for each use so the preparation is activated, diluted, and applied appropriately.

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Biodynamic Pfeiffer™ Field and Garden Spray