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Empowering cannabis and hemp stakeholders with information.

Who We Are

Big Tree Grading is the world’s first and leading cannabis and hemp grading and appraisal service. We have decades of experience in cannabis, agriculture, commodity, and supply chain industries. With more than 6 years working directly with 1000s of licensed operators, we know what it takes to produce the best quality product based on best practices and preferred operating procedures. Utilizing the International Cannabis and Hemp Standards (ICHS) we have developed guidelines and technology tools to facilitate the efficient and accurate quality verification of cannabis and hemp. 


of all we do. Utilizing a common language, a verifiable grading scale and a dedicated process, we infuse trust and transparency throughout the supply chain.


we ensure efficiency, accuracy and quality data. Our commitment to quality goes hand-in-hand with the way we operate, bringing you quality verification services, insights and consulting.


in Washington State and continuing towards an international presence.

Our Values

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Being vulnerable takes courage. By being comfortable getting uncomfortable we remain open to growth.

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Knowledge, understanding, intuition, learning, truth. Our curiosity is data driven; we learn by asking questions.

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The core of any relationship is transparency and integrity. Accountability, commitment and respect are fundamental to the way we operate.

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“There is no greater purpose than service to others.” - Socrates

When our clients and industry thrive, we thrive.

We are based in Washington state with a focus on national expansion. If you are interested in our services, reach out! We’d love to connect.

Proud Member and Supporter

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International Cannabis and Hemp Standards
ICHS's mission is to ensure transparency, consistency and integrity throughout the cannabis and hemp supply chains - from the farmer to the consumer.

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The Cannabis Alliance
The Cannabis Alliance's mission as a non-profit is to tell the real story about cannabis through education, advocacy, and setting the highest possible industry standards.

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Cannabis Observer
Cannabis Observer helps dismantle the prohibition of cannabis by creating outstanding information about cannabis policymaking in Washington state for stakeholders, the public, and policymakers themselves.

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The International Cannabis Farmers Association
The ICFA is a group of Cannabis farmers, scientists, and other thoughtful stakeholders working together to promote the unique quality and ecological benefits of sun grown Cannabis products while preserving the heritage of traditional farming communities.