Hop: Ahtanum®


Ahtanum® is named for the location where Charles Carpenter established the first hop farm in the Yakima Valley in 1869. It is the first commercially available bred hop by Yakima Chief Ranches. Used primarily as an aroma hop due to low alpha acid composition.

General Information

Alias YCR1
Profile Citrus (grapefruit), earthy and floral. Piney has been associated as well.
Country United States
Substitutes Amarillo®, Cascade, Centennial, Simcoe®, Willamette
Pairs with Amarillo®, Cascade, Citra®, Crystal, Mosaic®
Purpose Aroma
Yield 1600 - 1800 lbs/acre
Storage Retains 50 - 55% alpha acid contents after 6 months of storage at 68°F.
Beer Styles American Pale Ale, IPA, California Common, ESB
Resistant Downy mildew
Tolerant Powdery mildew


Alpha Acid 3.5 - 6.7%
Beta Acid 4.0 - 6.5%
Cohumulone 30.0 - 35.0%


Total Oil 0.5 - 1.7 ml/100g
Myrcene 45.0 - 55.0%
Humulene 15.0 - 22.0%
Caryophyllene 9.0 - 12.0%
Farnesene < 1.0%
Linalool 0.4 - 0.6%
B-Pinene 0.6 - 0.9%
Geraniol 0.4 - 0.7%

Additional Characteristics

Growth Rate Moderate
Cones Small size with compact density
Maturity Middle
Ease of Harvest Good

Ahtanum Aroma/Flavor Profile


Last Updated
  • 2024-03-30 11:18:59 (Added: 2020-05-10 16:39:08)

Hops Catalog

Did you know?
  • Dwarf variety hops grow shorter in height than traditional varieties but, importantly, produce the same yield. This combination makes harvest easier.
Recently added hops
  • Storage: is based on the percentage of alpha acids remaining after 6 months at 20*F.
  • Oil composition percetages are based on the total percentage of oil in the hop. Example: 10 - 20% means that for the specific oil it is 10 - 20% of the overall oil make up.
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