The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 1364Hybrid

Amnesia Sativa by Underground Seeds Collective

Haze × Skunk × Southeast Asian

Amnesia Sativa, a creation of Underground Seeds Collective, is a contemporary interpretation of traditional European sativa lineages. It is specifically bred to deliver a bright, cerebral energy and an uplifted head high, characteristic of the Amnesia family, while maintaining a clean, citrus-forward profile. This cultivar is optimized for daytime clarity and aromatic complexity.

May help withStress
AromaCitrusIncenseFloralHerbalEarthy

Appearance

This sativa-dominant hybrid typically grows tall with long internodes, promoting light penetration. Its leaves are narrower than average, reflecting its sativa heritage. During flowering, it exhibits significant stretch, often doubling or tripling in height. The flowers form long colas composed of stacked calyx clusters, rather than dense nuggets. Mature buds display lime to forest green hues with bright orange pistils that can darken to amber. Heavy trichome coverage creates a sparkling frost over the calyx surfaces, and the calyx-to-leaf ratio is favorable for trimming.

Aroma & Flavor

Amnesia Sativa presents an unapologetically bright sensory profile. Its bouquet leans fresh, zesty, and incense-like, with prominent citrus notes. Consumers can expect a complex aroma and flavor experience that often includes hints of lemon, alongside floral, herbal, and sometimes earthy undertones. The overall impression is clean and aromatic, reminiscent of classic Haze-dominant strains.

Effects

True to its name, Amnesia Sativa delivers an uplifted, fast-rising head high. It is known for inducing a bright, cerebral energy, making it a popular choice for daytime use. The effects are characterized by a buoyant euphoria and mental clarity, aligning with its sativa-major phenotype. This strain is often sought after for its stimulating and invigorating qualities.

Terpenes & Cannabinoids

While specific percentages vary, Amnesia Sativa is noted for a terpene profile that often features Limonene and Terpinolene, common in Haze-dominant sativas. Other terpenes such as Myrcene, Caryophyllene, and Ocimene may also be present, contributing to its complex aroma and effects. The THC content typically ranges from 15-25%, with CBD levels below 1%, indicating a potent psychoactive experience.

Cultivation

Underground Seeds Collective has refined Amnesia Sativa for improved vigor and mold resistance compared to older lines. It exhibits significant stretch during flowering and requires proper training, such as trellising or SCROG netting, to manage its height and maximize canopy. The flowering time indoors is typically 70-84 days (10-12 weeks), making it suitable for quarterly production cycles. Yields can be high with proper climate control and training, and its favorable calyx-to-leaf ratio aids in post-harvest processing.

Origins & Lineage

Amnesia Sativa by Underground Seeds Collective is a modern iteration of classic European sativa genetics, tracing its roots to the late 1990s and early 2000s Dutch coffeeshop scene. While its precise parentage is proprietary, it is understood to be a Haze-dominant lineage, likely incorporating influences from Skunk and Southeast Asian varieties. USC's work focuses on stabilizing these genetics for a more consistent seedline with enhanced vigor and resin coverage, while preserving the signature cerebral effects and citrus-incense aroma.

Frequently asked questions

What is the THC content of Amnesia Sativa?
Amnesia Sativa typically has a THC content ranging from 15% to 25%.
What are the dominant terpenes in Amnesia Sativa?
Dominant terpenes often include Limonene and Terpinolene, contributing to its citrus and incense-like aroma.
What effects can I expect from Amnesia Sativa?
Users commonly report uplifted, cerebral, and euphoric effects, making it suitable for daytime use.
How long does Amnesia Sativa take to flower?
The flowering period for Amnesia Sativa is generally between 10 to 12 weeks indoors.