The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 6756Hybrid

Sour Double

Sour Diesel × Sour Bubble

Sour Double is a hybrid cannabis strain recognized for its prominent diesel aroma and complex flavor profile. It is often encountered under aliases such as Sour Dubble or Sour Dubb, and is appreciated for offering a balanced experience that combines the energetic qualities of its Diesel heritage with a more grounded finish.

EffectsUplifting Clarity Relaxing Couch-Lock
May help withStress
AromaDieselCitrusEarthySkunkyCandyFuel

Appearance

This cultivar typically produces medium-sized, conical to oval-shaped colas that are densely covered in trichomes, giving them a silvery appearance. The calyxes are tightly stacked, often resulting in a compact bud structure with minimal leaf protrusion. Pistils can range in color from tangerine to rust, and may darken as the plant matures. Leaf morphology tends towards broader leaflets with serration reminiscent of indica varieties.

Sour Double plants exhibit moderate stretch, generally 1.5-2.0 times their initial height after the light flip. Internodal spacing is moderate, making them suitable for training techniques like topping and screen-of-green methods to promote an even canopy. Coloration can vary from bright lime to forest green, with the potential for purple hues to develop under cooler night temperatures late in the flowering cycle.

Aroma & Flavor

The aroma of Sour Double is characterized by a strong diesel-forward scent, layered with notes of citrus, fuel, and skunky earth. It frequently exhibits a distinct tartness, often punctuated by a noticeable candy-like sweetness derived from its Bubble heritage. The overall sensory profile is intense, offering a complex bouquet that appeals to those seeking pungent and multifaceted aromas.

Flavors mirror the aroma, presenting a dominant sour taste alongside prominent citrus and diesel notes. Hints of chocolate, grape, and grapefruit may also be detected, contributing to a rich and layered palate. The sweetness from the Bubble lineage provides a counterpoint to the more pungent diesel and earthy undertones, creating a unique and memorable flavor experience.

Effects

Sour Double is known to deliver a balanced hybrid effect, often described as providing brisk mental clarity combined with a more grounded, body-friendly finish. While it can offer an uplifting experience, the influence of its indica-leaning traits contributes to a sense of relaxation. This makes it a popular choice for consumers seeking a moderate, well-rounded effect profile.

The effects are generally not overwhelming, providing a noticeable yet manageable uplift. The comedown is often described as smoother compared to more intensely sativa-dominant strains. Some users report experiencing a couch-lock sensation, particularly with higher consumption levels, indicating its potential for deep relaxation.

Terpenes & Cannabinoids

Sour Double is recognized for its significant terpene content, often testing in the 1.5–3.0% total range, with exceptional phenotypes potentially exceeding 2.0%. Dominant terpenes commonly identified include Myrcene, Limonene, and Caryophyllene. Other terpenes frequently present are Linalool and Humulene. These compounds contribute to the strain's distinct aroma, flavor, and effects.

The THC content typically ranges from 15-25%, positioning it as a moderately potent strain. CBD levels are generally less than 1%, meaning the primary effects are driven by THC and the terpene profile. The combination of these cannabinoids and terpenes results in the strain's signature diesel, citrus, and earthy notes, alongside its balanced euphoric and relaxing effects.

Growing

Sour Double is considered a rewarding cultivar for growers, known for its strong lateral branching and medium stretch. It responds well to horticultural techniques such as topping and canopy management, which help to create an even canopy and optimize yields. The plant generally exhibits moderate internodal spacing.

The flowering period for Sour Double typically lasts between 56–63 days indoors. Growers often stabilize phenotypes for consistent fuel-citrus aroma, medium internode spacing, and manageable growth habits. While specific yield data can vary, the plant's structure and response to cultivation techniques suggest it can produce respectable yields when properly managed.

Origins & Lineage

The prevailing theory suggests Sour Double is a hybrid cross between Sour Diesel and Sour Bubble. Sour Diesel contributes its signature pungent, fuel-like aroma and energizing effects, while Sour Bubble, known for its resin production and indica-leaning traits, adds sweetness and a denser flower structure. This pairing is believed to account for the strain's complex flavor profile and balanced effects.

The strain gained further recognition partly due to its lineage connection to Original Glue (GG4), where Sour Dubb is noted as a parental influence. This association highlights Sour Double's pedigree within the breeding community, making it a sought-after genetic for breeders aiming to develop potent, high-terpene hybrids with award-winning potential.

Frequently asked questions

What is the THC content of Sour Double?
Sour Double typically contains THC levels ranging from 15% to 25%.
What are the dominant terpenes in Sour Double?
Commonly found terpenes in Sour Double include Myrcene, Limonene, and Caryophyllene, which contribute to its distinct aroma and effects.
What is the typical flowering time for Sour Double?
The indoor flowering period for Sour Double is generally between 56 to 63 days.
What is the commonly accepted lineage of Sour Double?
Sour Double is widely believed to be a hybrid cross between Sour Diesel and Sour Bubble.