Written by Ad OpsOrigins and Breeding History
Amnesia Automatic is Hempbrothers' autoflowering interpretation of the celebrated Amnesia family, designed to capture a classic sativa haze experience in a fast, day-neutral format. By pairing a vigorous Amnesia-selected sativa with a stabilized Cannabis ruderalis donor, Hempbrothers preserved the cerebral sparkle and citrus-incense profile while removing the dependence on photoperiod change to initiate bloom. The result is a cultivar that transitions from seed to harvest without light schedule manipulation, meeting the needs of growers who value speed and reliability.
Autoflowering cultivars have grown from niche to mainstream over the past decade, with market analyses in Europe indicating autos accounting for an estimated 30 to 50 percent of home-grow seed sales by the early 2020s. This shift was propelled by shorter crop cycles, compact stature, and improved potency that now rivals many photoperiod lines. Amnesia Automatic sits squarely in this evolution, delivering recognizable Amnesia character within 10 to 12 weeks of sowing under optimal conditions.
Hempbrothers' approach reflects a broader breeding trend: keep the iconic sativa personality while refining agronomics such as internode spacing, resistance, and terpene retention. Ruderalis brings hardy traits—cold tolerance, rapid maturation, and day-neutral flowering—that allow cultivation at latitudes where season length is limited. Growers who previously considered Amnesia too long or unwieldy can now experience a condensed, more manageable cycle without compromising the uplifting effect that made Amnesia famous.
Genetic Lineage and Inheritance
The declared heritage of Amnesia Automatic is ruderalis and sativa, a pairing that shapes both plant architecture and chemical expression. The sativa parent contributes elongated internodes, slender leaflets, and a terpene matrix dominated by terpinolene, limonene, and myrcene, a profile widely associated with Amnesia-type hazes. The ruderalis donor contributes the autoflowering gene complex that decouples flowering from the 12-12 photoperiod trigger, typically initiating bloom around days 21 to 30 from germination.
In practice, the genetic balance manifests as a taller-than-average autoflower that still finishes quickly, commonly in 70 to 85 days seed to harvest. Phenotypes lean sativa in both effect and form, but the ruderalis background tempers stretch and shortens maturation by several weeks compared to photoperiod Amnesia lines. The breeding objective is clear: compress the flowering calendar while retaining the signature Amnesia citrus-incense bouquet and bright, cerebral lift.
Hempbrothers' selection work likely emphasized a stable chemotype and uniform onset of flowering, two traits critical to reliable auto production. In grow rooms, this translates into coordinated development among plants, which improves canopy management and predictability of harvest windows. For consumers, the inheritance shows up as consistent potency with modest batch-to-batch variance when grown under similar environmental and nutritional regimes.
Botanical Appearance and Morphology
Amnesia Automatic displays a distinctly sativa silhouette, with medium to long internodal spacing and narrow, serrated leaflets that allow deep canopy light penetration. Mature plants commonly reach 60 to 110 cm indoors in 11-liter containers under strong LED lighting, with some phenotypes grazing 120 cm if left untrained. Stem structure is flexible but resilient, supporting elongated colas that develop an elegant, slightly fox-tailed calyx stack late in bloom.
Buds are spear-shaped and moderately dense for a sativa-leaning auto, with a high calyx-to-leaf ratio that eases trimming. Pistils emerge cream to tangerine and mature into deeper orange hues by the final two weeks. Trichome coverage is generous, and well-grown flowers exhibit a frosted sheen with bulbous capitate-stalked glands densely populating bracts and sugar leaves.
Colors remain lime to mid-green in warm rooms, but cooler night temperatures of 16 to 18 Celsius during late bloom can coax faint purples along petioles and sugar edges. The canopy generally expresses symmetrical branching and responds well to gentle low-stress training that flattens the top and distributes light. Overall, architecture is tidy and manageable, making it suitable for tent grows where ceiling height is a constraint.
Aroma Profile and Volatile Bouquet
The aroma of Amnesia Automatic is vivid and assertive, leaning into lemon zest, sweet citrus, and crisp pine set against an incense-like haze backbone. Terpinolene-driven notes create a bright, almost effervescent top end, while limonene reinforces the citrus peel quality that many associate with classic Amnesia. Underneath, myrcene and beta-caryophyllene add soft herbal and faint peppery tones that round the bouquet.
In mid-flower, the aroma intensifies sharply as total terpene concentration rises, often peaking in the final 3 to 4 weeks before harvest. Properly grown specimens produce a room-filling scent that necessitates carbon filtration in small spaces; a 4-inch inline carbon filter rated near 200 to 300 cubic meters per hour is commonly used for tents up to 1.2 meters squared. Outdoors, downwind neighbors may notice lemon-citrus and sappy pine hints from 10 to 20 meters depending on wind and humidity.
Post-cure, the bouquet refines into a balanced arrangement where citrus and incense coexist with a faint floral sweetness. Jar opening releases a high note of lemon oil followed by a polished wood-resin character reminiscent of frankincense. The overall aromatic intensity sits medium-high for an auto, a testament to the sativa influence preserved by Hempbrothers in their selection.
Flavor and Aftertaste
On inhalation, Amnesia Automatic delivers immediate lemon-lime brightness with a flash of sweet grapefruit and green apple skin. The mid-palate brings gentle herbal complexity, with pine needle, lemongrass, and a trace of white pepper attributed to terpinolene and beta-caryophyllene. Vaporizing at 175 to 185 Celsius emphasizes the citrus and floral facets, while combustion lends a toastier, resin-forward edge.
Exhale tends to be smooth when properly cured, offering incense, cedar shavings, and a subtle anise finish that lingers on the tongue. The aftertaste is clean and slightly sweet, and many users describe a mouthwatering effect akin to sucking on a lemon drop. Higher temperature vaping above 195 Celsius deepens the resinous and peppery notes but may overshadow the delicate top notes.
Terpene preservation during drying and curing is crucial to this flavor profile. A slow dry of 10 to 14 days at 18 to 20 Celsius and 55 to 60 percent relative humidity can retain 20 to 40 percent more monoterpenes versus a 3 to 5 day fast dry, according to controlled craft-cannabis drying observations. When maintained at 58 to 62 percent jar humidity during cure, the citrus-incense spectrum stabilizes and remains expressive for 8 to 12 weeks.
Cannabinoid Profile and Potency Data
As an autoflower derived from sativa Amnesia stock, Amnesia Automatic typically tests in the moderate-to-high THC bracket for autos, with many batches reported between 14 and 20 percent THC by dry weight. Select phenotypes and dialed-in grows can push above 20 percent, but a realistic average across home and craft grows sits around 16 to 18 percent. CBD is generally low, often in the 0.1 to 0.6 percent range, maintaining the classic sativa-leaning psychoactive balance.
Minor cannabinoids appear in trace to low levels. CBG commonly registers between 0.2 and 0.8 percent, and CBC often appears below 0.2 percent, though environmental stress and late harvest can nudge minor cannabinoid expression upward. Total cannabinoids in well-cured samples frequently fall in the 16 to 22 percent window, with the remainder composed of terpenes, flavonoids, lipids, and structural biomass.
Potency is influenced by light intensity, spectrum, and nutrition. Indoor grows delivering an average PPFD of 600 to 900 micromoles per square meter per second across an 18 to 20 hour photoperiod can achieve daily light integrals between 39 and 65 mol per square meter per day, supporting dense resin production. Properly managed VPD, moderate nitrogen in bloom, and adequate potassium in weeks 6 to 10 commonly produce the most consistent potency outcomes for this cultivar.
Terpene Profile and Chemotype Insights
Amnesia Automatic expresses a terpene profile typical of Amnesia-influenced sativas, with terpinolene as a frequent lead. In lab-tested Amnesia autos from comparable lineages, total terpene content commonly ranges from 1.5 to 3.5 percent of dry weight, with terpinolene measuring 0.3 to 0.8 percent, limonene 0.2 to 0.6 percent, and myrcene 0.2 to 0.5 percent. Beta-caryophyllene often tracks between 0.15 and 0.35 percent, with ocimene and linalool present in smaller yet perceptible amounts.
This chemical arrangement explains the cultivar's citrus, pine, and incense signatures. Terpinolene is strongly associated with bright, effervescent aromas and is prevalent in several classic hazes, while limonene underpins lemon-peel zest and a perceived mood-elevating quality. Myrcene adds a soft herbal cushion and helps weave the top notes into a cohesive whole.
Environmental management can measurably impact terpene totals. Cooler night temperatures in late bloom and a longer, low-and-slow dry regimen often retain higher monoterpene fractions. Excessive heat above 28 to 30 Celsius or extended light stress near harvest can reduce volatile content by 15 to 30 percent, manifesting as flatter aroma and flavor in the jar.
Experiential Effects and Consumer Reports
The effect profile of Amnesia Automatic leans uplifting, clear, and mentally engaging, consistent with its sativa heritage. Users commonly report an onset within 5 to 10 minutes by inhalation, with a swift rise in mental energy, focus, and a buoyant, upbeat mood. Music, conversation, and creative tasks tend to feel more immersive, and many describe a sense of lightness and mental clarity rather than heavy sedation.
Physically, the body load is typically light to moderate, allowing for daytime functionality at modest doses. At higher doses, especially in sensitive individuals, the pronounced cerebral stimulation can feel racy, occasionally provoking transient anxiety or an elevated heart rate. Duration averages 2 to 3 hours for inhalation, with the more intense arc subsiding after the first 60 to 90 minutes.
Compared to heavier indica-leaning autos, Amnesia Automatic is less likely to produce couchlock and more likely to encourage activity and social engagement. This makes it a popular choice for daytime sessions, mood-lifting routines, and brainstorming. Beginners are best served by conservative dosing at first contact to calibrate their comfort with the cultivar's brisk mental tempo.
Potential Medical Applications and Considerations
While individual responses vary, Amnesia Automatic's uplifting tone is frequently sought for mood support and energy during the day. Anecdotal reports and general cannabinoid-terpene literature suggest potential utility for low-motivation states, mild depressive symptoms, and fatigue, owing to limonene- and terpinolene-forward chemotypes that many users associate with brighter affect. Some consumers also report episodic relief for tension headaches and migraines, attributing benefit to reduced rumination and improved outlook rather than direct analgesia alone.
The cultivar's low CBD and stimulating profile mean it may be less suitable for anxiety-prone users at high doses. Those sensitive to rapid heart rate or racing thoughts should start with small inhaled amounts or consider balanced THC:CBD formulations. Timing also matters: using Amnesia Automatic near bedtime may disturb sleep initiation for some, whereas morning or early afternoon dosing may align better with its energizing arc.
From a symptom-management perspective, light-to-moderate relief has been reported for neuropathic discomfort and musculoskeletal aches, likely via THC-mediated modulation of pain signaling and beta-caryophyllene's CB2 agonism. However, the absence of medical-grade evidence specific to this named cultivar warrants caution. This information is educational only and not a substitute for professional medical advice; patients should consult a clinician familiar with cannabinoid therapeutics and local regulations.
Comprehensive Cultivation Guide
Lifecycle and timing: Under optimized indoor conditions, Amnesia Automatic generally completes in 70 to 85 days from germination. Preflower often appears by days 21 to 30, with a swell phase occurring in weeks 7 to 10. Outdoor timing varies by latitude and season, but many growers can complete two to three successive runs from late spring to early fall in temperate zones.
Germination and seedling care: Fresh, viable seeds often achieve 90 percent or higher germination when handled properly. Soak seeds 12 to 18 hours in room-temperature water, then transfer to a lightly moistened medium at 24 to 26 Celsius; a radicle commonly emerges within 36 to 72 hours. Maintain seedling root-zone temperatures at 22 to 24 Celsius with 65 to 75 percent relative humidity during the first 7 to 10 days to encourage rapid root expansion.
Medium and containers: Autos prefer minimal transplant stress, so sow directly into the final pot where possible. Popular sizes range from 9 to 15 liters (2 to 4 gallons) indoors; larger containers can increase yield but may extend the cycle slightly. Well-aerated soil or coco blends with 25 to 35 percent perlite improve oxygenation; target pH 6.3 to 6.5 in soil and 5.8 to 6.2 in coco or hydro.
Nutrition and EC: Feed lightly at first, as autos can be sensitive to over-fertilization during early vegetative growth. Aim for EC 0.8 to 1.2 in weeks 2 to 4, rising to 1.4 to 1.8 in mid-bloom and peaking near 1.8 to 2.0 only if the plant demonstrates robust appetite. Emphasize calcium and magnesium in LED setups and ensure sufficient potassium from week 6 onward to support turgor and resin production.
Light and photoperiod: Amnesia Automatic thrives under 18 to 20 hours of light daily. Indoors, a PPFD of 600 to 900 micromoles per square meter per second satisfies most phenotypes; with CO2 enrichment to around 1000 to 1200 ppm and careful VPD control, some growers push 900 to 1000 PPFD. Maintain a daily light integral between 35 and 55 mol per square meter per day for consistent growth and terpene retention.
Environment and VPD: Temperature targets of 24 to 26 Celsius daytime and 18 to 21 Celsius night in vegetative stages promote rapid development. During late bloom, easing daytime to 22 to 24 Celsius can help preserve volatile aromatics. Keep VPD near 0.8 to 1.1 kPa in early growth and 1.1 to 1.4 kPa in bloom to balance transpiration with pathogen suppression.
Training and canopy management: Due to the fixed clock of autos, favor low-stress training (LST) from days 14 to 28 to open the canopy and curb vertical stretch. Avoid high-stress techniques like topping after day 21, as growth delays can materially reduce final yield. A simple tie-down to form a flat, multi-cola plane increases light interception and uniformity, improving grams per watt efficiency.
Watering and root health: Water to 10 to 20 percent runoff in soilless systems to prevent salt buildup; allow the top 2 to 3 cm of medium to dry between irrigations for oxygen exchange. Overwatering in early life is a common error and can slow growth by 20 percent or more for a week, effectively shrinking the plant's final size at harvest. Beneficial microbes, such as inoculants containing Bacillus and Trichoderma, can enhance root vigor and nutrient uptake.
Pest and disease management: Maintain intake air filtration and practice routine leaf and substrate inspections. Amnesia Automatic's airy sativa bud structure lowers botrytis risk compared to ultra-dense indica phenotypes, but powdery mildew can still appear in humid rooms; target 45 to 55 percent RH in late bloom. Preventive IPM with insecticidal soaps, neem alternatives, or Beauveria-based biocontrols helps manage common pests like spider mites and thrips.
Harvest readiness: Begin monitoring trichomes from week 8 onward using a 60x loupe. For a sparkling, energetic effect, harvest when trichomes are mostly cloudy with 5 to 10 percent amber; for a slightly more grounded effect, wait for 15 to 25 percent amber. Expect a 7 to 10 day flush in inert media, shorter in living soil if nutrition is balanced.
Drying and curing: Hang branches in darkness at 18 to 20 Celsius and 55 to 60 percent RH with gentle air exchange of 10 to 20 room air changes per hour. After 10 to 14 days, finish-manicured flowers should stabilize near 10 to 12 percent moisture content, verified by 58 to 62 percent humidity packs in the jar. Cure for 4 to 8 weeks, burping weekly at first, to refine flavor and smoothness.
Outdoor guidance: In warm, sunny climates, place in full sun with at least 6 hours of direct exposure, aiming for a daily light integral above 25 mol per square meter per day. Plant after the last frost; autos tolerate cooler nights better than photoperiods due to ruderalis influence, but growth slows below 12 Celsius. Expect 60 to 150 grams per plant outdoors depending on pot size, sun intensity, and season length.
Legal and safety notes: Always cultivate within local laws and regulations. Use carbon filtration to mitigate odor where required, as terpinolene-forward cultivars can be noticeable downwind. Wear gloves and eye protection during trimming if sensitive to resin or airborne particulates.
Harvest, Drying, Curing, and Storage
Harvest timing has a measurable impact on both effect and shelf life. Earlier harvests with 5 to 10 percent amber trichomes skew toward a brighter, buzzy effect with slightly higher monoterpene retention. Later harvests at 15 to 25 percent amber broaden the body effect and can present faintly deeper, resinous flavors, though prolonged delay risks oxidative loss of top-end volatiles.
During drying, aim for a gradual moisture removal curve. A 10 to 14 day dry at 18 to 20 Celsius and 55 to 60 percent relative humidity reduces the risk of terpene loss compared to rapid drying at higher temperatures, which can off-gas 20 to 30 percent of monoterpenes. Keep air movement indirect and gentle, avoiding fan jets directly at flowers to prevent case-hardening.
Curing proceeds best in food-safe, airtight containers filled to 60 to 70 percent capacity to leave headspace for air exchange. Target a stable 58 to 62 percent internal humidity, checking weekly for the first month to avoid mold growth; water activity below 0.65 is generally considered safe for storage. Properly cured and stored at 15 to 18 Celsius in darkness, Amnesia Automatic can retain an expressive aroma and potency for 6 to 9 months, with gradual terpene softening over time.
Quality, Yield Expectations, and Phenotypic Variation
Indoors under efficient LEDs in tents around 1 square meter, Amnesia Automatic commonly yields 350 to 500 grams per square meter with dialed-in environmental control. Individual untrained plants in 11-liter pots frequently return 40 to 90 grams; with careful LST and high DLI, 100 to 150 grams per plant is achievable in optimized setups. Outdoors, typical yields range from 60 to 150 grams per plant depending on sun exposure, pot size, and season.
Plant height indoors usually falls between 60 and 110 cm, though feeding strength, photoperiod length, and genetics can nudge extremes. Stretch from preflower onset to peak height is often 1.5x to 2.5x the preflower height, reflecting the sativa influence. Phenotypic variation is modest but noticeable: some plants lean more citrus-forward with denser bracts, while others show slightly airier colas with stronger incense and spice.
Quality metrics that matter for this cultivar include terpene concentration, uniform trichome maturity, and a clean burn indicating proper flush and cure. Lab results from analogous Amnesia autos frequently report total terpenes in the 1.5 to 3.5 percent range, and consumers tend to favor batches with robust terpinolene and limonene expression. Visual indicators of top-quality samples include intact trichome heads, minimal leaf content, and an even, chalk-white ash under combustion, signaling thorough drying and curing.
