The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 4516Indica

Sr71 by Purple City Genetics

Unknown

SR71 is an indica-dominant cultivar from Purple City Genetics, known for its deep coloration and balanced effects. This strain offers a refined version of the classic "purple indica" profile, combining appealing bag appeal with a predictable growth structure.

EffectsCalm Relaxation
May help withStress
AromaBerryCandyEarthyFloralFruityGrapeOrangePeppery

Appearance

SR71 develops compact, dense flowers characterized by significant calyx swelling and a frosted trichome layer that appears early and persists through the cure. Under cooler conditions, buds display striking deep purples, ranging from wine to eggplant hues, contrasting with copper or burnt orange pistils. The plant exhibits a stocky, symmetrical structure with tight internode spacing, typically reaching 70-120 cm indoors, and moderate stretch during flowering.

Aroma & Flavor

The aromatic profile of SR71 features sweet, fruity top notes layered over earthy, spicy, and incense-like undertones, reminiscent of a classic "purple" cannabis scent. Flavors often mirror the aroma, presenting a combination of berry, candy, earthy, floral, fruity, grape, orange, and peppery notes.

Effects

Primarily indica-leaning, SR71 is well-suited for evening use, promoting body-centered relaxation and a calm, clear mental state at moderate doses. It is often associated with heavy relaxation without inducing excessive grogginess.

Terpenes & Cannabinoids

THC content in SR71 typically ranges from the high teens to the mid-20s, with CBD levels consistently below 1%. The terpene profile is described as leaning towards classic "purple" characteristics, with dominant terpenes including Myrcene, Limonene, Caryophyllene, Linalool, Pinene, and Humulene.

Growing

SR71 is noted for its commercial reliability, featuring manageable height and predictable stretch, making it suitable for high-density cultivation. It performs well indoors under high-intensity lighting and benefits from dialed-in environmental controls and consistent feeding. The strain has a relatively fast flowering window of 7-9 weeks.

Origins & Lineage

Developed by Oakland-based Purple City Genetics, SR71 draws inspiration from Bay Area cannabis lore and the SR-71 Blackbird, symbolizing stealthy potency and precision breeding. Its lineage is rooted in classic Kush and Afghani-influenced indica lines, refined to enhance color expression, resin density, and commercial viability while preserving a traditional "purple indica" experience.

Frequently asked questions

What is the THC content of SR71?
THC levels for SR71 typically range from 15-25%.
What are the primary effects of SR71?
SR71 is known for promoting relaxation and a calm, clear mental state, making it suitable for evening use.
What is the terpene profile of SR71?
SR71's terpene profile leans towards classic "purple" characteristics, with notable terpenes including Myrcene, Limonene, and Caryophyllene.
What is the origin of the SR71 strain?
SR71 was developed by Purple City Genetics, an Oakland-based breeder, drawing inspiration from Bay Area cannabis history.