ROTBLOC LLC was founded by Ken Carhart. He invented and designed ROTBLOC products gleaned from his 18 years of experience with agricultural wood products. 

All our products are certified for use in organic productions and are registered organic devices by the WSDA as an option for growers to use on untreated wood posts and poles. Our products are additionally registered for organic productions in Canada by PROCERT and PACS. 
All of our products are made in the USA from 100% recycled material. All products are solely designed and manufactured in-house 100% by our employees in-house in Bend, Oregon. ROTBLOC products are patented and protected by #8887452.

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ROTBLOC is a non-toxic barrier wrap that can be custom cut on your job site and applied to any round, square, uneven or flat wood unit to protect it from premature ground-line rot.

ROTBLOC is a 100% non-toxic application. No chemicals or adhesives are needed to install or retro-fit your wood posts, poles or garden beds. 

The Adaptive Seal repels debris and water.

Ground-Line Indicator indicates where ROTBLOC should rest, 2 inches above your ground-line.

Cut Guidelines measured every 2 in./5 cm. so you can count and cut easily with a blade.

Bi-Lingual: Instructions in English, Spanish, German and Italian.



Wood rots naturally at the ground-line primarily due to the billions of microorganisms and fungi within our soils that feed on your wood fibers. This abundance of life is fueled by oxygen, water and the sun's UVA rays that are absorbed within your topsoil. As a result, your wood units will begin to rot at the ground-line.


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ROTBLOC is a great solution to meeting organic grower's needs for an environmentally friendly, zero-waste solution. The key is to be educated about the wood species you are using, minimizing irrigation, know the pros and cons or your specific environmental conditions to prepare your wood poles for maximum success. 

Organic growers who have used ROTBLOC on their untreated wood poles have had success compared to the typical rot and decay seen as early as one year on an untreated pole without ROTBLOC.