The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 1645Indica

Blues

Skunk × Northern Lights (speculated)

Blues is a classic British indica-dominant strain that gained popularity in the 1990s. Originally a clone-only cultivar, it is recognized for its potent relaxing effects and a distinctive aroma profile.

AromaBerryBlueberryCheeseCitrusCreamEarthyHerbalLavenderSkunkStone Fruit

Appearance

Blues plants typically exhibit broad, dark green leaves and short internodes, characteristic of indica-leaning varieties. They form compact canopies with strong lateral branching, making them suitable for training techniques like topping and screen-of-green. During flowering, the buds develop into dense clusters with significant resin production, often covered in white to amber trichomes. Under cooler temperatures, sugar leaves may display a subtle blue-purple dusting.

Aroma & Flavor

The aroma of Blues is complex and potent, often described as a blend of overripe stone fruit, tangy cheese rind, and fermented skunk. The base notes are earthy and musky, with a subtle sweetness that transitions to savory undertones upon curing. Flavor profiles on the inhale include sweet, earthy, and fermented fruit notes, followed by creamy, tangy dairy impressions mid-palate. The exhale can present peppery and herbal notes from terpenes like caryophyllene and humulene.

Effects

Blues is primarily known for its deeply relaxing and sedative effects, often leading to sleepiness. Its indica-dominant nature contributes to a heavy body feel that can promote calmness and tranquility. Consumers often report a significant sense of relaxation, making it a suitable choice for unwinding or preparing for rest.

Terpenes & Cannabinoids

Myrcene is frequently the dominant terpene in Blues, contributing to its earthy aroma and sedative qualities. Beta-caryophyllene is also commonly present, adding peppery notes and potentially influencing the strain's effects. Humulene, limonene, and linalool may also be found, contributing herbal, citrus, and floral undertones respectively. THC levels typically range from 18-24%, with CBD content generally below 1%.

Growing Information

Blues plants are generally manageable in size, typically growing between 60-100 cm indoors when trained. They respond well to horticultural techniques and develop robust lateral branching. The flowering period results in dense, resinous buds. While specific yield data is not widely published, its structure suggests good production potential under optimal conditions.

Origins & Lineage

Blues originated in the UK during the 1990s and was initially a clone-only strain circulated underground, particularly in Northern England. Its exact genetic lineage is debated, but it is often theorized to be a selection from the Skunk family, potentially influenced by Northern Lights or, less commonly, Blueberry genetics. Its reputation was built on its unique aroma, yield, and profoundly relaxing effects.

Frequently asked questions

What is the origin of the Blues strain?
Blues originated in the UK during the 1990s as a clone-only strain, gaining popularity in the underground cannabis scene.
What are the typical effects of Blues?
Blues is known for inducing a deep sense of calm, relaxation, and sleepiness, making it a popular choice for evening use.
What does Blues smell and taste like?
It has a complex aroma and flavor profile featuring notes of overripe fruit, tangy cheese, fermented skunk, earthiness, and sometimes hints of cream or citrus.
Is Blues a good strain for beginners?
Due to its potent relaxing and sedative effects, beginners should approach Blues with caution and start with a low dose.