ATTRA's COVID-19 statement

Spring Update: You can now download any of our technical materials for FREE!

Sources of Organic Fertilizers and Amendments
No image available.

Digital Price:


Print Price:


By Andy Pressman

Published: 2009

Updated: 0000





This resource list is intended as a guide for farmers and gardeners to use in identifying specialty suppliers in the United States and bordering countries. Sources are categorized by product type and are based on the compilers' current knowledge of the range of materials available in the marketplace and the specific product offerings of each company listed.

Table of Contents

Note: Digital downloads are in full color. Printed, mailed copies are only available in black & white.


This page was last updated on: May 7, 2019