Written by Ad OpsOverview
Amnesia Auto is an autoflowering take on the celebrated Amnesia family, bred by 420 Genetics to deliver classic Haze brightness on a faster, more compact schedule. As an auto, it incorporates ruderalis genetics alongside indica and sativa influences, producing a plant that flowers by age rather than day length. The result is a cultivar that can move from seed to harvest in roughly 70 to 85 days under optimal conditions.
Growers favor Amnesia Auto for its energetic, citrus-forward profile and efficient production in small spaces. The strain typically remains manageable in height while maintaining a pronounced central cola and hazy terpene signature. For many, it offers a reliable way to experience upbeat Amnesia effects without the long flowering times of the original photoperiod Hazes.
Because Amnesia Auto is a name used by multiple seedmakers, details vary between breeders. This article focuses on the 420 Genetics line, which blends ruderalis with indica and sativa ancestry to approximate the hallmark Amnesia experience. The information below combines breeder guidance, market norms for Amnesia-leaning autos, and cultivation best practices to help you plan a successful run.
History and Breeding Context
Autoflowering cannabis first moved from niche curiosity to mainstream around the early 2010s, once breeders refined ruderalis crosses into truly potent, aromatic plants. Amnesia, and specifically Amnesia Haze, stood out as a high-energy, terpene-rich target for conversion to auto format. 420 Genetics developed Amnesia Auto to capture the electric citrus-incense profile in a time-saving package suitable for multiple harvests per season.
The modern autoflower market is diverse, with several Amnesia derivatives and CBD-forward variants. Public-facing catalogs like CannaConnection’s sitemap list numerous entries such as Amnesia Auto and Amnesia Auto CBD, underscoring how this lineage has proliferated across seed offerings. That footprint reflects wide consumer demand for the recognizable Haze uplift in a low-maintenance form.
A telling datapoint of the lineage’s influence appears in unrelated breeding projects. Anesia Seeds reports that their Strawberry Banana Auto used Strawberry Amnesia Auto to supply autoflowering genes and a strong terpene backbone, showcasing the reputation of Amnesia-derived autos as terpene donors. When breeders choose a parent for aroma and resin output, it signals confidence in the chemotype’s consistency.
While exact selections and backcrossing schedules are often proprietary, the broad outline is consistent. A selected Amnesia mother or Amnesia-leaning hybrid is crossed to a vigorous ruderalis donor with good resin and structural traits. Subsequent filial generations stabilize the auto trait, followed by selection for terpene intensity, cannabinoid potency, and uniform plant architecture.
Genetic Lineage and Architecture
According to 420 Genetics, the heritage of Amnesia Auto is ruderalis, indica, and sativa. The sativa component is responsible for the lifted headspace, clarity, and spicy citrus aromatics that trace back to the Amnesia and Haze families. Indica contributions help tighten node spacing, broaden leaflets slightly, and increase resin mass on the flowers.
The ruderalis fraction drives age-dependent flowering and resilience. Autos begin bloom irrespective of photoperiod, typically initiating pistils between days 21 and 30 from sprout under continuous 18 or 20 hours of light. This architecture allows growers to stack multiple cycles annually or mix veg and bloom plants in one room without altering light schedules.
Pheno distribution usually leans sativa in effect and aroma but exhibits hybrid structure in practice. Expect a pronounced apical cola, lateral bushing, and moderate internodal gaps when spacing and light intensity are dialed in. Breeding aims for a uniform canopy that can be lightly trained to improve light penetration without stalling the auto clock.
Appearance and Plant Structure
Amnesia Auto plants commonly finish at 60 to 110 cm indoors, with some phenotypes stretching a bit taller under high-intensity lighting. Internodes are moderate, and side branches often climb toward the canopy, creating a conical or slightly Christmas-tree silhouette. The main cola is typically dominant and densely stacked when managed with early low-stress training.
Leaves begin broader in early growth but narrow during stretch, revealing more sativa-like blades as bloom progresses. By week five to six, buds swell into tapered spears with fine, foxtail-like accents that are emblematic of Haze ancestry. Mature resin glands often appear glassy and abundant, frosting calyx tips and sugar leaves.
Color varies from lime to medium green, with occasional golden pistils that darken into a deep orange at maturity. Under cooler night temperatures in late bloom, some plants pick up slight lavender tinges on sugar leaves, although that trait is less pronounced than in purple-leaning cultivars. Trichome coverage tends to be uniform, yielding a sticky, aromatic finish at harvest.
Bud density is medium-high for an Amnesia-leaning auto, avoiding the overly airy structure older autos sometimes exhibited. When environmental parameters are optimized, growers can achieve compact flowers that grind well and preserve terpenes. That structure supports good bag appeal without compromising the cultivar’s classic incense-citrus nose.
Aroma and Flavor
The aromatic signature centers on bright lemon, sweet orange zest, and a familiar incense-spice that fans associate with classic Amnesia. Freshly rubbed flowers can release a vaporous, terpinolene-forward top note with hints of pine and green mango. As the bud cures, a soft herbal sweetness and faint peppery warmth emerge underneath the citrus.
On the palate, expect a clean lemon-lime entry, transitioning into orchard fruit and a resinous, woody finish. The aftertaste often lingers with a chalky, haze-like dryness that accentuates the pepper-spice layer. Vaporizing at lower temperatures highlights the citrus and floral facets, while hotter combustion pushes more pepper, wood, and anise.
Proper curing preserves volatile monoterpenes, which are responsible for the lift and freshness. A slow dry at 18 to 20 Celsius and 55 percent relative humidity, followed by a cure held near 58 to 62 percent RH, helps lock in the citrus top notes. Over-drying below 50 percent RH risks diminishing those bright aromatics and muting the experience.
Phenotypic range can include sweeter orange-candy expressions as well as more herbal, eucalyptus-leaning variants. These differences reflect relative proportions of terpinolene, ocimene, limonene, and caryophyllene. Even across this range, most examples retain the unmistakable Amnesia incense in the mid to base notes.
Cannabinoid Profile
Autoflowering Amnesia lines from contemporary breeders typically test in the high-teens to low-twenties for THC when grown and cured properly. For Amnesia Auto by 420 Genetics, a reasonable expectation is approximately 16 to 22 percent THC across average home setups, with optimized grows occasionally pushing higher. Real-world results vary with light intensity, nutrition, and harvest timing.
CBD is usually present in trace amounts, commonly below 0.5 to 1.0 percent in THC-dominant phenotypes. Minor cannabinoids such as CBG may register in the 0.4 to 1.5 percent bracket, adding to entourage effects without changing the overall psychoactive profile dramatically. THCV and CBC are typically trace-level but can still be detected in comprehensive lab panels.
These numbers are consistent with third-party testing trends reported for Amnesia-derived autos between 2019 and 2024, where most verified results land in the 16 to 22 percent THC range. Outliers exist, but sustained values above 24 percent in autos are relatively rare outside carefully dialed-in environments and elite phenos. Growers should avoid chasing headline claims and instead optimize cultivation variables to reach the cultivar’s typical potential.
Harvest timing influences the ratio of neutral to oxidized cannabinoids. Pulling earlier on mostly cloudy trichomes preserves a sharp, heady profile, while waiting for 10 to 20 percent amber can deepen body effects. Because Amnesia Auto aims for cerebral clarity, most growers target a window where trichomes are mostly cloudy with minimal amber to maintain the uplift.
Terpene Profile
Amnesia families are frequently terpinolene dominant, and Amnesia Auto follows that pattern in many phenotypes. Terpinolene contributes piney, citrus, and herbal scents and is associated with alert, creative experiences when paired with THC. Limonene often supports notes of lemon rind and sweetness, while beta-caryophyllene provides a peppery, woody foundation.
Ocimene and myrcene commonly appear as secondary actors. Ocimene adds floral, green, and tropical-fruit tones that amplify perceived sweetness in the nose. Myrcene, even at modest levels, can soften the profile and add a faintly balsamic, earthy cushion beneath the brighter top notes.
A representative terpene distribution might show terpinolene at 0.3 to 1.2 percent by dry weight, limonene at 0.2 to 0.8 percent, and beta-caryophyllene at 0.2 to 0.6 percent. Ocimene and myrcene frequently land in the 0.1 to 0.4 percent zone each, with pinene and linalool appearing in smaller amounts that shape nuance. Total terpene content of 1.5 to 3.5 percent is a realistic target for well-grown autos, with standout runs topping 4 percent.
Breeding choices in the broader market reinforce this terpene identity. In a published product note for Strawberry Banana Auto, the breeder selected Strawberry Amnesia Auto specifically to inject autoflowering genes and a strong terpene load, signaling confidence in Amnesia-derived terpene density. This aligns with grower reports that properly dried and cured Amnesia Auto emits a room-filling citrus-incense bouquet.
Experiential Effects
The effect profile is classically uplifting and mentally clarifying, with a fast onset under most consumption methods. Users often report elevated mood, a gentle rush of energy, and increased focus within minutes. The experience typically remains crisp and functional at moderate doses, transitioning into a floaty euphoria as intake increases.
Physically, the strain brings light muscle relaxation without heavy sedation, especially during the first 60 to 90 minutes. As the high progresses, some users feel a warm, tranquil body glow that balances the cerebral buzz. This taper can help ease into tasks or social settings while avoiding couchlock.
Terpinolene-forward cultivars paired with mid-to-high THC can be racy for sensitive individuals. Those prone to anxiety may want to start with smaller doses, hydrate well, and avoid stimulants like strong coffee during the session. Vaporizing at lower temperatures often moderates the intensity and preserves clarity.
Duration commonly spans two to three hours for inhalation routes, depending on dose and tolerance. The comedown is usually gentle, with residual brightness lingering without heavy fog. For daytime use, many users consider Amnesia Auto a go-to for creative work, brainstorming, or light outdoor activity.
Potential Medical Uses
While not a substitute for medical advice, Amnesia Auto’s profile suggests several potential applications. The uplift and motivational push may benefit individuals managing fatigue, apathy, or mild depressive symptoms under clinician guidance. The cultivar’s clarity can also suit those seeking focus for short periods without sedation.
The beta-caryophyllene content may contribute to CB2 receptor engagement, with preclinical literature associating caryophyllene with anti-inflammatory potential. Limonene and terpinolene have been studied for mood-elevating and anxiolytic properties in certain contexts, though human cannabis-specific trials remain limited. Patients sometimes report relief from stress-related tension and mild headaches when dosing modestly.
Appetite stimulation is moderate and tends to appear later in the session, which can be useful for those who prefer not to trigger immediate hunger. Some users with migraine histories note usefulness as a prodrome or early-onset intervention, citing the rapid cerebral lift. However, individuals sensitive to trigeminal stimulation or strong scents should test cautiously due to the bright terpene profile.
Because Amnesia Auto is stimulating, it may not be ideal for insomnia when used late in the evening. Conversely, it can help counter daytime lethargy without the heavy crash common to sedating indica-dominant chemotypes. As always, patients should consult healthcare professionals, keep a dosing journal, and consider cannabinoid-terpene interactions with any other medications.
Cultivation Guide: Fundamentals
Amnesia Auto thrives when the grower prioritizes environmental stability and gentle, early training. Seed to harvest typically ranges from 70 to 85 days, with preflowers appearing around day 21 to 30. Height generally caps at 60 to 110 cm indoors, and root volume strongly influences final size.
For autos, transplant stress can cost several days of growth, so many growers start seeds in final containers. Pot sizes of 7 to 11 liters for soil or coco work well, while hydro or autopots can leverage smaller media with strong oxygenation. An airy substrate with 20 to 30 percent perlite or equivalent helps root zone health and reduces overwatering risk.
Use an 18/6 or 20/4 light schedule from start to finish. Daily light integral targets of 35 to 45 mol per square meter per day and canopy PPFD of 600 to 900 micromoles per square meter per second in bloom provide strong performance without overstressing autos. Maintain VPD around 0.8 to 1.0 kPa in vegetative growth and 1.2 to 1.5 kPa during flower for optimal transpiration.
Environmental ranges should sit near 24 to 28 Celsius in the day and 18 to 22 Celsius at night. Relative humidity can start at 65 to 70 percent for seedlings, drop to 50 to 60 percent in veg, and hold 45 to 50 percent in bloom, moving to 38 to 42 percent in late flower. A steady intake of fresh air and oscillating fans limit microclimates and support strong stems.
Cultivation Guide: Indoors
Indoors, expect yields of 400 to 550 grams per square meter under efficient LEDs if the canopy is even and the substrate is well-oxygenated. Skilled growers with dialed-in environments may approach 1.0 to 1.2 grams per watt using high-efficacy fixtures in the 2.5 to 3.2 micromoles per joule range. Novice setups commonly land between 250 and 400 grams per square meter as technique improves.
Establish a uniform canopy by guiding the main stem and top laterals horizontally early with soft ties. Low-stress training from days 12 to 25 is the sweet spot for autos; avoid aggressive topping after day 21, as recovery time is limited. If topping is attempted, a single early pinch at the fourth node around day 14 to 18 can work, but LST is safer and more consistent for this cultivar.
Nutrient strength in coco coir typically ranges from 1.2 to 1.6 mS/cm EC in early veg, rising to 1.8 to 2.0 mS/cm in mid-bloom and easing to 1.4 to 1.6 mS/cm during the final flush. In soil, focus on a living or buffered mix and supplement with light liquid feeds to avoid salt buildup. Maintain pH 5.8 to 6.2 in hydro or coco and 6.2 to 6.8 in soil for consistent nutrient uptake.
Because the aroma is assertive, carbon filtration and sealed ducting are advisable. A quiet inline fan with proper CFM matching the tent size will manage heat and smell without stressing plants. Keep intake air clean and slightly cooler than canopy temperature to reduce pathogen pressure and maintain leaf vapor exchange.
Cultivation Guide: Outdoors and Greenhouse
Outdoors, Amnesia Auto performs best in mid-latitudes during warm months with consistent sun and moderate humidity. Planting windows should avoid cold nights below 10 Celsius and sustained heat above 35 Celsius, both of which can stall autos. In favorable conditions, individual plants commonly yield 60 to 150 grams, with top-tier runs exceeding that when grown in large containers or rich ground soil.
Choose well-draining soil amended with compost and aeration materials, and consider fabric pots of 19 to 38 liters to maximize root room. Water deeply but infrequently, letting the top few centimeters of soil dry between irrigations to encourage oxygenation. Mulch helps regulate root temperature and reduces evaporation, which is valuable during heat waves.
Greenhouses extend the season and buffer against rain, protecting resin and terpene quality. Use roll-up sides or active ventilation to keep VPD within target ranges and to avoid powdery mildew. Autoflowers are less flexible in recovery, so prevent stress events rather than correcting after the fact.
In regions with short summers, staggering four to six plants every two weeks can secure continuous harvests. Because Amnesia Auto is photoperiod-independent, successive plantings can overlap without concern for daylight length. Plan pest barriers and beneficial insect releases early, as autos can complete their lifecycle before some infestations fully manifest, allowing proactive control to carry you to harvest cleanly.
Cultivation Guide: Nutrition, Training, and Watering
Amnesia Auto appreciates a balanced feed and steady root-zone conditions. In soil, start with a mild vegetative nutrient at 0.8 to 1.2 mS/cm EC during early growth, ensuring adequate calcium and magnesium for LED-lit environments. Transition to a bloom formula by day 25 to 35 as pistils multiply, elevating phosphorus and potassium moderately.
Silica supplementation can strengthen stems supporting the main cola, particularly in high-PPFD rooms. Maintain a calcium-to-magnesium ratio near 2 to 1 in solution to avoid magnesium lockout common in coco. If leaf tips burn or leaf margins claw, reduce EC by 10 to 20 percent and monitor runoff.
For training, favor low-stress techniques. Bend and tie the main stem outward once the fifth or sixth node emerges, then guide side branches to fill space evenly. Avoid defoliation beyond selective removal of shaded, dying leaves; excessive leaf stripping can suppress photosynthesis and stall autos.
Watering cadence is crucial. In coco, provide smaller, more frequent irrigations once or twice daily in late veg and bloom, aiming for 10 to 20 percent runoff to prevent salt buildup. In soil, water when pots feel light, typically every two to four days depending on pot size, temperature, and humidity.
Cultivation Guide: Environment, IPM, and Odor Control
Consistent climate management produces denser flowers and a richer terpene finish. Keep day temperatures between 24 and 28 Celsius and nights 4 to 6 degrees cooler. Aim for 45 to 50 percent relative humidity during mid-bloom to minimize botrytis risk while preserving resin production.
Integrated Pest Management should begin before planting. Sticky cards, weekly leaf inspections, and cleanliness reduce the likelihood of mites, thrips, or fungus gnats. Introduce beneficials like Amblyseius swirskii or Cucumeris early if you have a history of thrips, and use Bacillus thuringiensis israelensis for gnat larvae in wet media.
If mildew pressure is a concern, foliar sprays of potassium bicarbonate or biologicals like Bacillus subtilis can be applied in early veg only, never on forming buds. Improve airflow with oscillating fans that ripple leaves lightly without windburn. Regularly sanitize tools and avoid over-crowding to protect lower canopy microclimates.
Odor control is important with an Amnesia-leaning terpene profile. Sized carbon filters rated for your exhaust fan’s CFM, along with negative pressure in the tent, keep aromas contained. Inspect filter pre-sleeves monthly and replace carbon filters every 12 to 24 months, depending on use intensity.
Harvest, Drying, and Curing
Visual maturity arrives roughly 70 to 85 days from sprout, but always confirm with trichome inspection. For the signature bright effect, harvest when trichomes are mostly cloudy with only a small fraction amber. Pistils should be largely darkened and receding, and calyxes swollen with resin.
Dry in a cool, dark room at 18 to 20 Celsius and 55 percent relative humidity for 8 to 12 days. Gentle air exchange prevents stale pockets while avoiding direct airflow on flowers. Branch snapping and stem flexibility are practical indicators that moisture has equilibrated.
Cure in airtight glass jars starting at 62 percent RH, burping daily for the first week and then weekly as aroma stabilizes. Target a final jar humidity of 58 to 62 percent for flavor and smoothness. Over time, the citrus and incense meld, and harsh edges soften.
Final yields depend on phenotype, training, and environment. Indoors under competent LEDs, 400 to 550 grams per square meter is a realistic finishing range for Amnesia Auto by 420 Genetics. Outdoors, 60 to 150 grams per plant is common, with larger containers and full sun pushing the high end.
Comparative Context and Market Presence
Amnesia Auto sits within a broader ecosystem of Amnesia derivatives, including CBD-leaning and regionally named selections. Public catalogs such as the CannaConnection sitemap list Amnesia Auto, Amnesia Auto CBD, and related entries like Amnesia Bilbo Autoflowering, highlighting how frequently breeders revisit this profile. The market’s embrace of these variants speaks to enduring demand for citrus-incense haze effects in accessible formats.
Compared with photoperiod Amnesia Haze, the auto’s main advantages are speed, simplicity, and compact stature. While some photoperiod phenotypes can exceed 10 to 12 weeks of flowering alone, Amnesia Auto typically completes its entire lifecycle in that timeframe. Modern auto breeding has narrowed the potency gap substantially, making the trade-off worthwhile for many homegrowers.
In breeding, Amnesia-derived autos are valued as terpene donors. The documentation from Anesia Seeds, wherein Strawberry Amnesia Auto was chosen to contribute both autoflowering genes and a rich terpene package to Strawberry Banana Auto, illustrates this point. Such choices reinforce the view that Amnesia-type autos offer reliable aromatic intensity alongside auto convenience.
Safety, Tolerance, and Responsible Use
Because Amnesia Auto tends to be clear and energetic, dose control is key for users sensitive to stimulation. Start with one to two small inhalations and wait ten minutes before increasing, particularly with fresh, terpene-rich batches. Hydration and a calm setting help reduce the chance of racing thoughts.
Those with a history of anxiety may prefer to pair small doses with calming activities or to select consumption routes that deliver steadier onset. Vaporizing at 170 to 185 Celsius accentuates flavor and can temper intensity relative to hot combustion. Avoid mixing with alcohol or strong caffeine if you are still learning the cultivar’s personal effects.
As always, avoid driving or operating machinery under the influence. For medical users, discuss cannabinoid and terpene profiles with a clinician, especially if using other medications or managing cardiovascular conditions. Secure storage is vital, as the pronounced aroma and compact buds can tempt unintended access.
Conclusion
Amnesia Auto by 420 Genetics captures the lightning-in-a-bottle spark of the Amnesia family in a fast, forgiving form. Its ruderalis, indica, and sativa heritage creates a plant that grows quickly, smells loudly of citrus and incense, and delivers an upbeat, functional experience. With good light, careful irrigation, and early low-stress training, it rewards growers with frosted spears and a satisfying yield.
From a chemical standpoint, expect THC in the mid-to-high teens to low-twenties, terpinolene-led terpenes, and modest minors like CBG. The effect is bright, creative, and social at moderate doses, tapering into a warm physical ease without heavy sedation. Medicinally inclined users often explore it for mood, energy, and stress modulation, while noting that high doses can be stimulating.
In the larger market, Amnesia-derived autos have proven influential enough to serve as terpene donors in other breeders’ projects, and they appear frequently in seed catalogs alongside CBD variants. Those signals point to a robust, enduring appeal that blends flavor, function, and practicality. If you want classic Haze energy without photoperiod complexity, Amnesia Auto is a confident and contemporary choice.
