In partnership with Washington State University and Montana State University 
Building and sharing information and best practices for biodegradable mulch
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What does biodegradable mulch cost?
The purchase price of biodegradable plastic m​ulch varies, depending on factors such as the width and thickness of the mulch as well as the length of the roll. Thickness of products can range from 0.5 to 1 mil, with thinner products generally degrading faster than thicker products. The cost of biodegradable mulch products ranges between 37% and 165% more than conventional polyethylene plastic mulch. More information is available in this factsheet about the economics of using biodegradable plastic mulch. The factsheet addresses purchase cost, as well as end-of-season savings of labor and disposal costs. Prices of cellulose-based (paper) mulch also vary based on thickness and creping, and are similar to biodegradable plastic mulch prices.
[See more information and other FAQ here.]

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New Factsheet! "Micro- and Nanoplastics in Soil: Should We Be Concerned?" authored by Doug Hayes. See i​t and other basic information about biodegradable mulch here.

New Case Study! See the resources page for more information. ​The case study chronicles the experiences of Boxx Berry Farm in Washington state during its trial of different mulches, inlcuding biodegradable plastic mulch.