Written by Ad OpsOverview
Amnesia Fast is a mostly sativa fast-flowering take on the iconic Amnesia family, developed to deliver the same electric head buzz and citrus-haze personality in a dramatically shorter bloom cycle. While classic Amnesia and Amnesia Haze often require 9–11 weeks to finish, fast versions are bred to shave roughly 10–20 days off that window without sacrificing potency. In practical terms, that means indoor growers routinely see harvest in about 6–7.5 weeks of flowering, with outdoor finish dates pulling forward into mid- to late-September in many temperate latitudes.
Despite the accelerated schedule, potency is still formidable. Many Amnesia-derived cuts test in the 18–24% THC range, with CBD typically below 1%, keeping the overall effect energetic and cerebral. Expect bright lemon zest, sweet herbs, and incense on the nose, along with a piney, peppered haze finish when combusted or vaporized.
Cannapot’s Amnesia Fast represents a grower-friendly pathway into the Amnesia experience, trimming wait times that turn off some sativa fans. Multiple retailers list Amnesia Fast versions for those prioritizing speed, and this cultivar follows the same logic: take a legendary sativa profile and make it harvest-ready sooner. When dialed in, yields remain competitive for a sativa-leaning plant, often landing in the 450–600 g/m² indoor range under optimized light and nutrition.
Breeding History and Context
The Amnesia family descends from old-school Haze lines blended with European mainstays like Skunk and Northern Lights, a combination that cemented its citrus-incense profile and soaring mental lift. Classic Amnesia Haze earned fame in Dutch coffeeshops for its complex terpene bouquet, but growers often wrestled with the long bloom time that could exceed 10 weeks. Breeders responded over the 2010s with “fast” photoperiod versions engineered to finish earlier while retaining the sativa character.
Amnesia Fast by Cannapot fits squarely into that movement. Seed vendors have noted rising demand for fast-flowering seeds that finish earlier than standard sativas, a trend reflected in retail catalogs that group “fast versions” as a category. These offerings typically target cultivators who love haze effects but need a tighter harvest planning window for indoor rotation or shorter outdoor seasons.
The fast-flowering concept differs from full autoflowering. Rather than flipping based on age, fast versions remain photoperiod-dependent but have an abbreviated flowering period. In practice, this approach pairs the training flexibility and higher ceiling for yield of photoperiods with a timeline closer to some autoflowers—often trimming 2–3 weeks off classic sativas.
Market listings reinforce the popularity of the format. Retailers like SeedSupreme include “Amnesia Fast Version” in curated mixes and strain groups, signaling that growers repeatedly seek it out for quicker turnarounds. Meanwhile, outlets referencing Advanced Seeds’ Amnesia Fast feminized emphasize the same motivation: enjoy Amnesia’s signature profile without the long wait.
Genetic Lineage and Fast-Photoperiod Architecture
Most Amnesia Fast lines trace to Amnesia/Amnesia Haze core genetics, integrating an “early” or “fast” partner to reduce the bloom time. The early donor is often an autoflower or semi-autoflower line used at one stage and then worked back toward photoperiod dominance, or a photoperiod early-flowering selection. In either case, the result is a plant that still requires a 12/12 flip but transitions rapidly through floral maturation.
Cannapot’s Amnesia Fast stays true to the sativa-forward personality of Amnesia, preserving its stretch, elongated internodes, and terpene palette. The shortened bloom can be viewed as a breeder’s trade-off: maintain the uplifting, psychoactive profile and terpene complexity while reining in the calendar. Most growers can expect 42–55 days of flowering indoors once pistils set, though phenotype variation may add a week for especially resinous or large-framed cuts.
Lineage discussions around Amnesia typically cite Haze, Skunk, and Northern Lights ancestry, which explains the citrus-herbal top notes (Haze), the sweet skunk undertones (Skunk), and the improved density and resin production (Northern Lights). Fast versions seek to carry that triad forward with minimal compromise. Growers should still anticipate a sativa stretch of 1.5–2.5× after flip, a hallmark of Amnesia heritage even when the finish is accelerated.
Botanical Appearance and Morphology
Amnesia Fast expresses a distinctly sativa morphology: narrow to medium-wide leaflets, long internodal spacing, and a vigorous vertical push in early flower. Stems are relatively pliable in veg, which allows training without excessive breakage, especially if you top or bend once the main stem has lignified slightly. The canopy naturally wants to form spears rather than dense golf-ball clusters, though with training, colas can stack impressively.
Buds typically form as elongated, foxtail-resistant spires with good calyx-to-leaf ratios. Trichome coverage is generous for a sativa-leaning strain, producing a sparkling frost over lime-green calyxes. Orange to amber pistils weave through the surface, gaining deeper hues as maturity nears.
The fast trait often increases calyx swelling sooner than in long-bloom Amnesia lines, giving buds a finished look earlier in the cycle. Under strong light levels, bracts can puff up quickly between weeks 4 and 6, and resin will become sticky to the touch by the midpoint of flowering. Late-stage foxtailing remains modest if heat and light stress are controlled, helping maintain the streamlined spear shape.
Aroma: Volatile Bouquet
The aromatic profile of Amnesia Fast leans into lemon-zest brightness, sweet herbs, and a distinctive incense haze character. Most phenotypes throw a pinene-limonene-linalool shimmer at first sniff, quickly followed by a peppery, woody breadth that reads as spicy and slightly floral. Breaking a cured bud often adds a whiff of sweet pastry dough or chamomile, a nod to myrcene and linalool interplay.
In the room, the bouquet intensifies during weeks 5–7 of flower. Carbon filters rated for at least the tent’s cubic feet per minute (CFM) with a 1.2–1.5× safety factor are recommended to manage the plume. Many growers report that even modest handling of dried buds fills a space with lemon-pine and incense notes within seconds.
Vaporization reveals additional nuances. At lower temperatures, you’ll get more citrus peel, green apple, and basil-like freshness. At higher temperatures or with combustion, deeper woody haze, pepper, and faint diesel elements take the lead, likely tied to beta-caryophyllene and humulene expressions.
Flavor and Consumption Experience
On the palate, Amnesia Fast delivers lemon oil, sweet herbs, and a gently bitter pine resin finish. That final note helps keep the profile from turning cloying, giving each draw a clean, tonic-like edge. As the bowl progresses, subtle vanilla and sandalwood materialize, echoing the incense-laced haze aroma.
In joints and pipes, the initial flavor hits hard and crisp, then rounds into a honeyed citrus. Bong users often note a lingering lemon-pepper aftertaste that pairs well with iced water or citrus-infused beverages. Vaporizer users at 175–190°C report the cleanest expression of the citrus-herbal top notes with minimized harshness.
Flavor stability correlates strongly with proper drying and curing. When dried at around 60°F/15.5°C and 55–60% relative humidity for 10–14 days and cured at 58–62% RH in sealed jars, the citrus high notes persist for months. Poorly managed drying—especially faster-than-7-day dries above 70°F/21°C—can dull the zest and accentuate harsher phenolics.
Cannabinoid Profile and Potency
Amnesia-derived cultivars commonly test in the 18–24% THC range, with rare phenotypes climbing higher under optimized conditions. CBD typically remains under 1%, yielding a THC-dominant chemotype that drives the strain’s rapid mental uplift. CBG values can appear around 0.4–1.0% in some samples, contributing to the perception of focus and tension relief.
Like other high-THC sativas, the acidic precursors THCA and CBGA dominate in raw flower prior to heat. After decarboxylation during smoking or baking, those acids convert to their neutral forms, producing the psychoactive and therapeutic effects. For edibles, decarboxylation parameters around 105–115°C for 30–45 minutes are standard to maximize conversion without excessive terpene loss.
Potency perception scales with dose, tolerance, and administration method. Inhaled routes typically produce noticeable onset within 2–5 minutes, peaking at 30–60 minutes, and tapering over 2–3 hours. Oral routes may take 45–90 minutes to onset with effects lasting 4–6 hours or longer, amplifying the need for conservative dosing.
Compared against similar haze-family sativas, Amnesia Fast remains competitive. For context, popular haze cuts often cluster near 18–22% THC, as retailers note for related varieties in their catalogs. The fast trait shortens the calendar but does not categorically reduce potency; environment, nutrition, and harvest timing exert larger influence on final cannabinome.
Terpene Profile and Minor Aromatics
Amnesia Fast typically expresses a terpene stack led by terpinolene, limonene, and beta-myrcene, with meaningful contributions from beta-caryophyllene and alpha-pinene. This array aligns with the classic haze citrus-incense bouquet while adding a green, pine-threaded dimension. In third-party lab reports on Amnesia family cuts, terpinolene often ranks among the top one or two terpenes, sometimes exceeding 0.5–1.0% of dry weight.
Limonene contributes the bright citrus snap and mood-lift commonly reported by users. Myrcene deepens the sweetness and can influence the perceived body relaxation at higher doses, even in a sativa-leaning profile. Beta-caryophyllene adds pepper and interacts with CB2 receptors, a feature associated with anti-inflammatory potential in preclinical literature.
Alpha-pinene and humulene round out the secondary layer. Pinene’s camphor-pine freshness supports the “clear-headed” impression many attribute to Amnesia. Humulene brings a woody dryness and may contribute to a slightly appetite-suppressing undertone in some users, although responses vary.
Minor constituents such as ocimene, linalool, and nerolidol appear variably by phenotype. These add floral, fruity, or tea-like accents that become more obvious at lower vaporization temperatures. The precise terpene balance will shift with growing conditions, harvest maturity, and curing practices, which is why two jars of Amnesia Fast from different gardens can smell recognizably similar yet distinctly unique.
Experiential Effects and Use Patterns
Amnesia Fast delivers a quick, uplifting onset characterized by a mental “switch-on” and sensory brightness. Many users report elevated mood, increased talkativeness, and enhanced focus during the first hour. Physical energy rises modestly, but the profile leans more toward cognitive stimulation than body drive.
At moderate doses, creativity and task engagement often feel enhanced, making it a daytime choice for brainstorming, music, or social settings. The clear, energetic quality is a hallmark of sativa-forward haze lines and remains intact despite the shortened flowering time. Some users also describe a distinct sense of motivation without heavy euphoria, which helps with getting through light chores or routine work.
At higher doses, the mental activity can become racy, especially for those sensitive to THC. A fraction of users may experience transient anxiety or a rapid heartbeat, phenomena commonly reported with potent sativa profiles. Hydration, mindful dosing, and a comfortable environment help manage these possibilities.
The duration of noticeable effects typically spans 2–3 hours with inhalation. As the experience tapers, a gentle, relaxed clarity can emerge, making it easier to transition back to baseline. Sleepiness is uncommon until the very end of the arc or with higher cumulative intake, which differentiates Amnesia Fast from sedative indica-dominant strains.
Potential Therapeutic Applications
High-THC, limonene/terpinolene-forward cultivars like Amnesia Fast are frequently chosen by patients seeking mood elevation and daytime functionality. Anecdotal reports associate such profiles with relief from low mood and stress-related tension, although responses are individual. Observational data and user-tracking platforms often show fast-onset mood improvements with THC-dominant sativas, particularly in the first 60–120 minutes after use.
The energizing, focus-friendly character may support people dealing with fatigue or attention challenges, especially in low to moderate doses. Terpenes like limonene and pinene are commonly cited for promoting alertness and clarity in user accounts. That said, for individuals prone to anxiety, titrating cautiously is prudent given THC’s dose-dependent effects.
Some users report relief from migraines and tension-type headaches, particularly when onset is caught early and vaporized cannabinoids can be dosed with precision. Beta-caryophyllene’s CB2 activity and pinene’s potential bronchodilatory properties are of interest, though clinical evidence remains preliminary. As always, people with medical conditions should consult a clinician familiar with cannabis before initiating use.
Appetite and gastrointestinal comfort responses vary with this chemotype. While some limonene-rich sativas stimulate appetite, others feel neutral or slightly suppressive, which can be helpful for daytime productivity. Importantly, broader reviews indicate cannabis may help certain chronic pain populations; however, THC-forward sativas are not universally ideal for all pain types, so patient-specific evaluation is essential.
Cultivation Guide: Indoors and Outdoors
Amnesia Fast is built for growers who want sativa vigor without a sativa calendar. Indoors, a well-managed crop routinely finishes in 6–7.5 weeks after the 12/12 flip, with total seed-to-harvest times around 12–14 weeks depending on veg length. Outdoors, the earlier finish means many temperate growers can harvest before autumn rains, often by mid- to late-September at 45–50°N/S.
Because it stretches 1.5–2.5× after flip, controlling canopy architecture is key. Topping, low-stress training (LST), and SCROG frameworks all help shape multiple colas and keep light distribution uniform. A managed canopy also improves airflow, which is critical late in flower when dense spears can trap humidity.
In soil, aim for a light, well-aerated mix with 20–30% perlite by volume for extra drainage. In coco or hydro, the cultivar responds well to higher oxygenation and controlled feeding, often translating to faster vegetative growth and slightly earlier flower set. Whichever medium you choose, the fast trait rewards meticulous environmental control during a compressed bloom window.
With its sativa lean, this plant likes light. Under LED fixtures, target 700–1,000 µmol/m²/s PPFD during mid to late flower, ensuring adequate CO2 availability and nutrition. Outdoors, place in full sun, shooting for a daily light integral (DLI) of 35–45 mol/m²/day for best flowering performance.
Environmental Parameters and Feeding Strategy
Maintain canopy temperatures around 24–28°C during lights on and 18–22°C at lights off. Relative humidity should hover at 55–65% in veg and 40–55% in flower, with 40–45% preferred in the final two weeks to discourage botrytis. A vapor pressure deficit (VPD) between 1.0 and 1.5 kPa in flower keeps stomata active without stressing the plant.
In coco/hydro, a feeding EC of roughly 1.2–1.6 mS/cm in late veg and 1.6–2.2 mS/cm through peak bloom is a reliable range. Soil growers often use lighter liquid feeding but rely on amended media and top-dressing; monitor runoff EC and leaf color to avoid under- or overfeeding. Keep pH at 5.8–6.2 in coco/hydro and 6.2–6.8 in soil for optimal nutrient uptake.
Nitrogen demand is moderate in veg but should taper in early flower to prevent excess leafiness and slow bud set. Phosphorus and potassium requirements rise sharply from weeks 3–6 of blooming, which corresponds to rapid calyx formation in fast strains. Cal-mag support is essential under high-intensity LEDs, especially in RO water systems.
With PPFD above ~800 µmol/m²/s, enriched CO2 to 1,000–1,200 ppm can improve photosynthetic efficiency and yields. Ensure robust air exchange and oscillating fans to maintain uniform CO2 distribution and temperature. Remember that more light and CO2 require commensurate increases in water and nutrient availability to realize the gains.
Training, Pruning, and Canopy Management
Top once or twice in veg to create four to eight main leaders, then weave branches into a SCROG screen set 20–30 cm above the pots. LST the side branches outward to widen the footprint and bring more sites into high PPFD zones. Remove lower growth that will never reach the canopy to reduce larf and improve airflow.
A strategic defoliation at day 21 of flower, focusing on large fan leaves that shade emerging buds, can increase light penetration and trichome development. A lighter cleanup around day 42 helps maintain airflow during the critical ripening phase. Avoid over-defoliation in a single session; fast strains benefit from incremental adjustments that minimize stress.
Support long colas with plant yoyos or trellis netting as buds gain mass. Keep canopy depth to 20–30 cm of active bud sites to ensure even ripening within the truncated bloom time. This architecture reduces the risk of airy lower flowers and concentrates energy on top-tier colas.
Flowering, Harvest Timing, and Post-Harvest Technique
Indoors, Amnesia Fast commonly reaches full maturity at 42–55 days of 12/12, depending on phenotype and environmental precision. Outdoors in favorable climates, early flowering set in mid-summer can translate to harvest before late-September rains. If a pheno leans heavier haze, add 5–7 days—still notably quicker than classic Amnesia.
Monitor trichome maturity with a 60–100× loupe. A typical target is 5–10% amber trichomes, 70–85% cloudy, and the remainder clear for a bright, energetic effect. For a slightly heavier finish, push to 10–15% amber, but avoid excessive delay that can flatten the lively sativa edge.
After cutting, aim for a slow dry around 60°F/15.5°C and 55–60% RH for 10–14 days. Branches should snap rather than bend before trimming and jarring. Cure in airtight containers at 58–62% RH, burping daily for the first week and then weekly for 3–4 weeks to stabilize moisture and polish the flavor.
Proper post-harvest can retain 20–40% more terpene expression compared with quick, high-temperature dries. This is especially impactful for limonene and terpinolene, which volatilize readily above 25°C. Taking the extra time pays off in the preserved citrus-incense complexity Amnesia fans prize.
Pest, Pathogen, and IPM Considerations
Dense, spear-like colas and a compressed finish make moisture management a priority. Keep late-flower RH near 40–45% and ensure cross-canopy airflow to prevent botrytis and powdery mildew. Prune interior popcorn sites that impede air movement, and avoid foliar sprays once buds are well formed.
Common pests include spider mites, thrips, and fungus gnats, especially in warm, dry indoor environments. Implement integrated pest management proactively: sticky traps, regular leaf inspections, and biological controls such as predatory mites (e.g., Phytoseiulus persimilis) and beneficial nematodes. Sanitation—clean tools, filtered intakes, and quarantining new plants—dramatically reduces infestations.
If issues arise, act fast but delicately due to the short flower window. Opt for microbials and targeted biologicals in early flower, and emphasize environmental corrections later to avoid residue on buds. Maintaining stable VPD and eliminating plant stress lowers susceptibility across the board.
Yield Expectations and Optimization
Under competent indoor conditions, Amnesia Fast often yields 450–600 g/m² with 4–6 plants per square meter and 300–600 W of high-efficiency LED per m². Skilled growers pushing light levels, CO2, and meticulous training can surpass these figures, though phenotype selection remains a major factor. Outdoors in full sun with rich soil, individual plants commonly produce 400–800 g, with larger containers and season length pushing the upper end.
Light intensity and uniformity drive the largest share of yield variance. A flat, well-managed canopy within 20–30 cm of vertical depth allows more flower sites to receive 700–1,000 µmol/m²/s PPFD. Consistent irrigation and feeding, avoiding dry-backs that swing EC wildly, keep calyx expansion on track during the pivotal weeks 3–6 of bloom.
Even in a fast cultivar, patience in the final 7–10 days increases density and resin. Harvesting a week early is one of the most common reasons for leaving 10–15% of potential yield—and a lot of flavor—on the table. Trichome-based harvest timing remains the best single predictor of both potency and bag appeal.
Common Mistakes and Troubleshooting
Overfeeding nitrogen into early flower is a frequent mistake with Amnesia-leaning plants. Excess N delays bud set, encourages leafy flowers, and can mute citrus-forward terpenes. Transition to bloom nutrition promptly after flip and watch leaf color for signs of surplus.
Underestimating stretch leads to light burn or uneven canopies. Plan for 1.5–2.5× vertical growth and set trellis support before flip to guide the surge. If height becomes unmanageable, consider supercropping early in stretch, but avoid aggressive bending after week two of flower.
Harvesting too early is another pitfall. Clear trichomes correlate with an underdeveloped effect and thinner flavor; wait for predominantly cloudy heads and a touch of amber. Rushing drying at high temperatures quickly flattens the top notes that define Amnesia’s charm.
Market Position, Availability, and Notable Mentions
Amnesia Fast occupies a sweet spot for growers who want sativa uplift in a calendar more typical of hybrids. It’s commonly marketed as a feminized, fast-flowering photoperiod, meeting demand from indoor cultivators managing tight rotations and outdoor growers racing the first fall storms. Seed catalogs frequently group it under “fast versions,” reflecting a broader trend of time-optimized genetics.
Retailers list “Amnesia Fast Version” among their offerings, and it appears in curated bundles like relaxation-themed mixes where quick-turn, potent cultivars are highlighted. Other brands, such as Advanced Seeds, have promoted an Amnesia Fast feminized option tailored to those deterred by long haze flowering times. These parallel listings underscore how multiple breeders and vendors recognized the same grower pain point and addressed it with accelerated lines.
Cannapot’s Amnesia Fast aligns with that ethos while maintaining the mostly sativa heritage that defines the Amnesia experience. For buyers, the takeaway is clear: expect the signature lemon-incense haze personality and heady elevation, just with a harvest date that arrives 10–20 days sooner. Always review breeder notes for the specific line you purchase, as finish times can vary slightly by selection and environment.
Data-Backed Growing Tips and Benchmarks
Use the following benchmarks to gauge crop health and trajectory. Average indoor veg duration of 4–6 weeks produces plants with enough structure for multi-cola SCROG layouts. After flip, aim for flower completion in 42–55 days, checking pistil maturity and trichomes, not just calendar days.
Nutrient EC targets of 1.6–2.2 mS/cm during peak bloom pair well with PPFD in the 800–1,000 µmol/m²/s range. Keep pH mid-5.8–6.2 in coco and 6.3–6.7 in soil to minimize lockout events. In RO water systems, supplement 100–150 ppm of Ca/Mg to stabilize uptake and prevent interveinal chlorosis.
For post-harvest, a 10–14 day dry at 60°F and 55–60% RH and a 4-week cure at 58–62% RH preserve more limonene and terpinolene compared with fast dries. Growers routinely report 10–20% better aroma retention using this approach. These numbers are practical, field-tested guardrails to capture the best of a fast-blooming haze derivative.
Comparisons to Classic Amnesia and Haze Peers
Where classic Amnesia Haze can stretch bloom to 70–80+ days, Amnesia Fast closes in roughly 42–55 days in many rooms. The shortened schedule translates into easier planning and more annual cycles indoors, often boosting cumulative yearly output by 15–30% for the same square footage. Terpene character remains recognizably citrus-haze, though some connoisseurs may find the deepest incense tones slightly less pronounced in the fastest phenos.
Against other haze-descended sativas like Super Silver Haze, Amnesia Fast generally finishes sooner while holding similar head-clearing potency. Many haze peers cluster near 18–23% THC; Amnesia Fast lands right in that window under competent cultivation. If you’re selecting purely on timeline efficiency while preserving a lively sativa, Amnesia Fast is often the practical choice.
For training, Amnesia Fast behaves more like a hybrid than a lanky pure haze, responding well to topping and SCROG with predictable node spacing. Yield density is improved versus older haze cuts that stayed airy without prolonged bloom. Overall, the fast trait modernizes the Amnesia experience for contemporary grow cycles.
Risk Management, Compliance, and User Considerations
High-THC sativas can feel intense for inexperienced users, so start with low doses and wait to gauge effects. Vaporizing at lower temperatures offers a gentler introduction, preserving bright terpenes while moderating harshness. Keep hydration and a light snack handy to offset dry mouth and potential lightheadedness.
Growers should verify local cultivation laws, plant counts, and possession limits. Indoor carbon filtration and odor control are not only considerate but often essential to remain compliant with lease agreements or community standards. Fast-flowering plants can still be pungent, so plan ventilation accordingly.
Seed vendors routinely include disclaimers that effects vary and that growers assume responsibility for cultivation outcomes. Those notes are reminders that phenotype variation, environment, and technique drive results at least as much as genetic promises. Approach each run as an experiment, take notes, and refine with each cycle.
Conclusion and Final Thoughts
Amnesia Fast captures the essence of a legendary sativa lineage and pairs it with a finish time that works for modern growers. The bright citrus-haze aroma, crisp flavor, and energizing, cerebral effects remain intact, while the condensed timeline opens doors for shorter seasons and tighter indoor rotations. When given solid light, disciplined training, and stable environment, it rewards with frosty spears and a euphoric, clear-headed ride.
From a planning perspective, the data is compelling. A 10–20 day reduction in bloom can translate to an extra cycle annually, higher overall throughput, and reduced exposure to late-season outdoor risks. Combine that with yields that regularly hit 450–600 g/m² indoors and the result is a pragmatic, high-quality addition to any garden.
Cannapot’s fast take on Amnesia stands alongside other market offerings with the same goal: keep what people love about Amnesia and deliver it sooner. For cultivators who want a quick, reliable haze-flavored harvest and enthusiasts who prefer daytime clarity with a grin, Amnesia Fast is a smart, efficient pick. Treat it with care through the abbreviated bloom, and it will return the favor in resin, aroma, and buoyant sativa lift.
