The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 0543Sativa

Amarillo Sour

Sour Diesel × Tangie × Lemon Skunk × Grapefruit

Amarillo Sour is a sativa-leaning hybrid cannabis strain recognized for its pronounced citrus and diesel aroma profile. It delivers an energetic and uplifting experience, making it a popular choice for daytime use.

May help withStress
AromaCitrusDieselFloralGrapefruitHerbalLavender

Appearance

Amarillo Sour typically presents with medium to large colas that taper to a point, featuring moderately spaced bracts. Its calyxes are elongated, and the buds are densely frosted with trichomes, giving them a sticky texture. The coloration is often lime and spring green, sometimes with hints of lavender or slate hues on the sugar leaves under cooler conditions. Tangerine pistils contrast with the pale green calyxes, and trimmed buds have a medium density.

Growers may observe slight foxtailing in high-heat or high-CO2 environments, though this is usually aesthetic. Maintaining optimal environmental parameters, such as canopy temperature between 24-27°C and VPD of 1.2-1.6 kPa, helps ensure tight bud stacking. Well-cured buds retain intact, glassy trichome heads, often appearing cloudy to amber at harvest, with a tacky yet pliable feel at 10-12% moisture content.

Aroma & Flavor

The aroma of Amarillo Sour is characterized by a bright surge of lemon rind, grapefruit pith, and a sour-candy effervescence. This top note is complemented by a distinct diesel-fuel undertone, reminiscent of classic Sour Diesel, along with peppery spice and herbal resin notes. The overall impression is clean and crisp, favoring sharp citrus over heavy skunk.

The flavor profile mirrors the aroma, delivering a prominent citrus-forward taste with sour undertones and classic diesel notes. This combination makes it appealing to those who appreciate terpene-rich flower where the scent translates directly to taste. The flavor is often described as bright, zesty, and slightly gassy.

Effects

Amarillo Sour is known for providing energetic and mood-elevating effects, positioning it as a suitable choice for daytime consumption. It offers an uplifting experience without the heavy sedation often associated with indica-dominant varieties. Consumers report feeling more creative and productive after use.

Terpenes & Cannabinoids

Amarillo Sour is a THC-dominant Type I chemovar, with total cannabinoid content commonly reported between 20-30% by weight. While specific terpene profiles can vary, aromatic analyses suggest common terpenes include Myrcene, Limonene, Caryophyllene, Linalool, Pinene, Humulene, Terpinolene, Ocimene, and Valencene. The presence of Limonene is strongly indicated by its citrus and grapefruit notes, while Caryophyllene and Myrcene likely contribute to its diesel and herbal undertones.

Origins & Lineage

The exact origin and breeder of Amarillo Sour are not widely documented, suggesting it emerged as a boutique selection rather than a commercially released seed line. Its name points to a flavor profile combining citrus (evoking yellow zest and grapefruit aromatics) with classic diesel notes, placing it near the Sour Diesel and East Coast Sour family. It likely originated from phenotype hunting within craft cannabis circles, possibly on the West Coast or in the Mountain West.

Inferred lineage suggests a cross between a Sour family strain, such as Sour Diesel, and a citrus-forward variety like Tangie, Lemon Skunk, or Grapefruit. This combination would account for the diesel backbone, bright limonene-driven citrus notes, and potential Valencene contributing to grapefruit facets. The strain's popularity has grown through word-of-mouth, appreciated for its consistent sensory signature and upbeat effects.

Frequently asked questions

What is the THC content of Amarillo Sour?
Amarillo Sour typically contains 20-30% THC.
What are the dominant aromas of Amarillo Sour?
Amarillo Sour is known for its bright citrus, grapefruit, and diesel aromas.
What effects can I expect from Amarillo Sour?
Users often experience energetic and creative effects, making it suitable for daytime use.
What is the likely lineage of Amarillo Sour?
It is believed to be a cross between a Sour Diesel relative and a citrus-forward strain like Tangie or Lemon Skunk.