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Hemp in Washington

Open-knowledge reference entry

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 22, 2026
Entity authorityQ55613610
Source-derived summary

Hemp in the U.S. state of Washington has emerged as an experimental crop in the 21st century.

Historical production

The U.S. Government reported no hemp production in Washington in 1890, nor did the state government in 1914 or 1922.

Related crops in Washington

Cannabis and Humulus lupulus are both members of the family Cannabaceae, and a number of similarities in the botany and human use of the two species have been noted. Humulus lupulus produces hops, a crop grown in quantity west of the Cascades historically (especially the Snoqualmie and Puyallup River valleys) and is a major 21st century crop in the Yakima Valley.

Prohibition and legalization

All cannabis was made illegal by the Washington State Legislature in 1923.

Although Washington voters legalized marijuana in 2012 with I-502, the initiative did not authorize hemp cultivation or sales.

In accordance with the Federal 2014 Farm Bill, the state legislature created an Industrial Hemp Research Pilot (IHRP) in 2016 following passage of ESSB 6206 (codified as Revised Code of Washington Chapter 15.120), with regulation by the Washington State Department of Agriculture. Industrial hemp is defined in Washington as cannabis with a THC concentration of 0.3 percent or less by dry weight. Under the 2018 farm bill, the state's Department of Agriculture is recognized by the United States federal government as the regulator for industrial-scale non-experimental hemp production.

State law defines hemp-derived products containing less than 0.3% THC as "Cannabis Health and Beauty Aids".

Editorial summary

This brief starts where responsible research should: with the source description of “Hemp in Washington” as open-knowledge reference entry. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1890, 1914, 1922, 1923—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Hemp, Washington and Open-knowledge can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as open-knowledge reference entry. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated May 22, 2026. The linked authority identifier is Q55613610. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1890, 1914, 1922 and 1923.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from Hemp in Washington” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.