This document provides a summary of a practical guide to developing marketing campaigns focused on sustainability without engaging in "greenwash". It outlines a three part process: 1) Planning the approach by focusing on fundamentals, getting ahead of issues, and partnering for credibility. 2) Developing communications through honesty, humility, providing details, and showing not telling. 3) Launching and commitment for the long term by being responsive and committed over time. The goal is to provide actionable principles at each stage of development and implementation to help marketers avoid greenwashing and create compelling sustainability marketing.