Publications

Oregon Tilth Organic Land Care Field Guide

The guide works to inform and clarify preferred, required and prohibited practices for use in the Organic Land Care Program. The guide offers a comprehensive view of the foundations and applications of organic land care, including soil health, air quality, storm water management, organic weed and pest management and sustainable landscape design, installation, and maintenance. The 70-page publication includes color photos, figures and tables. Please visit the Oregon Tilth store to purchase the guide.

Oregon Tilth Organic Land Care Policies and Standards

The Organic Land Care Policies and Standards offers detailed information related to OLC practices and what is required to maintain OLC practitioner accreditation. These policies and standards have been developed by a coalition of landscape professionals, horticultural academia, concerned individuals, and the Oregon Tilth. The OLC Standing Committee carries out periodic reviews and revisions of the standards and policies. [Download the PDF - 350 KB]