Written by Ad OpsHistory Of Amnesia
Amnesia is a modern classic from the Dutch cannabis renaissance, and the Professional Genetics Seeds selection helped cement its reputation as a mostly sativa powerhouse. In the 1990s and early 2000s, the Netherlands became the crucible for Haze-forward hybrids that married electric cerebral effects with improved yield and resin. Amnesia emerged from that wave and was quickly adopted by coffee shops in Amsterdam for its soaring head high and unmistakable citrus-incense bouquet.
Over time, multiple breeders released their own cuts and reworks of Amnesia, which is why you will see related names like Amnesia Haze, Amnesia Lemon, and Amnesia x AK-47 appearing in catalogs. Leafly profiles describe both Amnesia and Amnesia Haze as unmistakably uplifting, creative, and euphoric, with high THC and low CBD. The Professional Genetics Seeds version keeps the spirit of the original Dutch Haze line while prioritizing robust vigor, consistent sativa structure, and a memorably active effect profile.
It is common for consumers and even budtenders to conflate Amnesia with Amnesia Haze because the effects and aromas overlap and both are Haze-centric. Historical accounts often attribute Amnesia Haze to landrace influences from South Asia and Jamaica, while the broader Amnesia family reflects a mix of Haze and Afghan or Skunk elements that stabilize yield and flowering. The Professional Genetics Seeds Amnesia channels that heritage into a selection that is straightforward to grow indoors and shines in controlled environments.
As the strain circulated globally, it built a strong word-of-mouth following on the strength of its euphoric, talkative, and giggly mood lift. According to user reports compiled by Leafly, consumers frequently cite giggly, euphoric, and talkative as the top positive impressions, with dry mouth, dizziness, and occasional paranoia as the main drawbacks. Those characteristics became synonymous with the Amnesia name, and the Professional Genetics Seeds offering embraces those signatures while modernizing the growability and bag appeal.
Genetic Lineage And Breeder Notes
Amnesia sits within the Haze family tree, a lineage defined by tall sativa structure, citrus-pine aromatics, and long flowering windows. Multiple lineages have been reported over the years, often referencing Haze crossed with Afghan or Skunk for structure, or mixed with Southeast Asian and Caribbean landraces to deepen the psychedelic brightness. Amnesia Haze, a close relative profiled by Leafly, is frequently described as incorporating South Asian and Jamaican influences into a Haze backbone.
Professional Genetics Seeds selected their Amnesia as a mostly sativa phenotype with a focus on stability and terpene richness. In practical terms, that means uniform internodal spacing, consistent stretch, and a reliable citrus-incense terpene ratio. Their line typically presents tall plants with spear-shaped colas, lean leaf morphology, and an unmistakable Haze nose that persists from Week 6 of flower onward.
Growers familiar with Haze lines will recognize the hallmark 2x to 3x stretch from the flip to flower, and the need for canopy management. The Professional Genetics Seeds Amnesia responds well to topping and Scrog techniques to tame verticality and push lateral cola development. While the precise parental stock is not publicly disclosed, the phenotype expression aligns with classic Haze-dominant crosses bolstered by a stabilizing indica influence for resin density and yield.
In practice, this Amnesia behaves like an agile sativa hybrid rather than a fragile landrace, which is valuable for indoor cultivators. Tight, repeating sativa morphology allows for predictable trellising and consistent cola spacing across the canopy. That predictability, combined with a terpene profile that consumers immediately recognize, is why this selection has become a dependable anchor in sativa-heavy menus.
Physical Appearance And Bag Appeal
Amnesia typically forms elongated, spear-like flowers with a medium density that keeps the classic sativa aesthetic. Calyxes stack in tapering columns, often showing light foxtailing under high-intensity lighting, especially late in flower. The coloration trends lime to forest green with bright orange pistils that twist outward and darken from tangerine to burnt orange at peak ripeness.
Trichome coverage is generous and sticky, creating a frosted sheen that pops under a jar light without turning into an indica-like golf ball. The calyx-to-leaf ratio is favorable, which helps trimming go faster than expected for a sativa-leaning cultivar. When broken apart, the buds reveal a dense resin head count, and the citrus-herbal aromatics jump out immediately.
Nugs cure well to a springy yet firm feel, avoiding the airy brittleness that can plague more finicky sativas. Properly dried and cured Amnesia should snap at the stem while the flowers remain pliable, with visible, intact trichome heads. Expect average flower sizes to skew long rather than chunky, especially when grown under a ScrOG that encourages cola stacking.
Bag appeal hinges on the showy pistil contrast and the animated nose that telegraphs potency. The jar opens with an aromatic flash, which consumers associate with Haze family potency and an energetic ride. When displayed alongside denser indica-leaning selections, Amnesia stands out by shape, color, and scent, signaling its role as a daytime headliner.
Aroma And Bouquet
The first impression is bright and complex: lemon zest, sweet citrus rind, and pine-forward freshness that fades into herbal incense. Terpinolene, a hallmark Haze terpene highlighted by Leafly in their Haze family terpene guide, takes center stage and often leads the aromatic experience. Supporting notes of caryophyllene and myrcene provide peppery spice and earthy grounding, tightening the structure of the bouquet.
Secondary facets include sweet herbaceous ocimene, a hint of floral lilac, and an airy, woodsy dryness reminiscent of cedar. When the flower is broken or milled, the citrus becomes juicier and more volatile, often shifting toward a sweet grapefruit tone in the top notes. On warm cure, a savory, peppered herbal quality develops that underscores the incense signature.
Terp intensity is high for a sativa and carries well into the room, especially in the mid-flower window from weeks 6 to 9. Many growers report the aroma is loud enough to require robust carbon filtration in small indoor spaces. The Professional Genetics Seeds selection maintains this intensity without the muddiness that sometimes appears in late-cure Hazes.
Compared to Amnesia Haze, which often leans slightly more floral and spicy at the base, this Amnesia skews a bit brighter on citrus and pine. It holds its clarity in the jar, a sign of balanced terpene ratios and careful dry-cure. That clarity translates directly to flavor stability in joints and vaporizers.
Flavor And Mouthfeel
On the inhale, expect an immediate citrus snap that lands between lemon oil and sweet grapefruit, quickly layered by pine and sweet herbs. The mid-palate shifts into pepper-spiced florals, which is consistent with caryophyllene and ocimene contributions. The exhale brings a gentle incense and cedarwood echo with a lightly bitter citrus pith finish that lingers.
In combustion, the smoke is medium-bodied and surprisingly smooth for a terp-forward sativa, provided the cure is properly managed. Vaporization highlights the terpinolene brightness and reveals a candy-like sweetness that combustion can obscure. At lower vaporizer temperatures around 175 to 185 C, the lemon-herbal top notes dominate, while 190 to 200 C unlocks the peppery resin and deeper wood tones.
Mouthfeel is clean and slightly effervescent, creating a perceived lift even before the onset of psychoactivity. The aftertaste is persistent and leans piney and zesty with a sweet-herb shadow that pairs well with citrus beverages. For edibles produced from Amnesia extract, expect the terpene fingerprint to survive into the finished product, adding a citrus-herbal high note to confections.
Cannabinoid Profile And Potency
Amnesia is broadly characterized by high THC and low CBD, a pattern reinforced by user data and retailer listings. Leafly notes that both Amnesia and Amnesia Haze trend toward high THC with minimal CBD, and SeedSupreme lists feminized Amnesia Haze lots above 20% THC with 0 to 1% CBD. In practice, you can expect finished flower THC in the 18 to 26% range, with the median often sitting around 20 to 23% for dialed-in indoor runs.
CBD is typically negligible at under 1%, and CBG frequently appears in the 0.4 to 1.0% range depending on phenotype and maturation. Trace THCV has been reported in some Haze lines at 0.1 to 0.3%, but it is not a defining cannabinoid in most Amnesia lots. Total cannabinoids commonly land in the 20 to 28% band when labs include minor cannabinoids.
Potency perception is accentuated by the strain’s terpinolene-forward terpene stack, which many consumers interpret as a sharper, brighter onset. That synergy often makes the effect feel stronger than the raw THC number suggests, especially for inexperienced consumers. The euphoric, creative lift is consistently reported as pronounced, and the talkative social tone is a signature feature across user reviews.
For dose planning, many new users find that 5 to 10 mg of inhaled THC equivalent produces a distinctly energetic effect that can last 90 to 150 minutes. Experienced consumers often target 15 to 25 mg inhaled equivalents for sustained euphoria and focus, though higher doses raise the risk of jitteriness or paranoia. For edibles, start low given the high THC and allow 2 to 3 hours for full effect expression.
Terpene Profile And Chemistry
The terpene spine of Amnesia is classic Haze: terpinolene dominant with meaningful support from myrcene and beta-caryophyllene. In lab-tested Hazes, terpinolene often ranges from 0.3 to 1.0% by weight, with total terpene content commonly 1.0 to 3.0% in well-grown indoor flower. Myrcene typically contributes 0.2 to 0.5% and beta-caryophyllene 0.2 to 0.4%, while ocimene, limonene, humulene, and linalool populate the 0.05 to 0.3% range.
Leafly’s Haze family terpene coverage emphasizes terpinolene’s role in the uplifting, effervescent mood signature associated with strains like Amnesia Haze and Super Lemon Haze. Terpinolene brings a citrus-pine floral quality and has been studied for its aromatic volatility and potential calming properties in non-cannabis contexts. In cannabis, it is strongly correlated with energetic, creative, and euphoric impressions when paired with substantial THC.
Myrcene provides earthy sweetness and may soften the edges of the heady rush by adding a touch of body presence. Beta-caryophyllene, a dietary cannabinoid that binds to CB2 receptors, supplies peppery spice and can contribute to a relaxed physical tone without sedation. Ocimene and limonene add sweet herbal and fresh citrus lift, reinforcing the bright top notes that are unmistakable in a jar.
Across phenotypes, you should expect terpinolene to lead and set the experiential tone, with the secondary terpenes modulating flavor and feel. The Professional Genetics Seeds cut shows consistent terpinolene leadership and holds aroma through the cure, a sign of well-balanced terpene ratios. When grown under moderate temperatures and a careful dry, the terpene profile remains crisp and expressive, which consumers associate with quality.
Experiential Effects And Onset
Consumer reports align around a consistent triad of giggly, euphoric, and talkative effects, which are explicitly noted by Leafly for Amnesia Haze. The Professional Genetics Seeds Amnesia produces a similar experience: a fast-rising cerebral lift, a sense of mental clarity, and a buoyant mood that invites conversation. Creative ideation and task motivation are common, particularly in the first 60 to 90 minutes.
Onset with inhalation arrives within 2 to 5 minutes for most users, peaking at 15 to 25 minutes, and gently tapering over 2 to 3 hours. The functional window is often strongest in the first 90 minutes, after which the experience smooths into a relaxed yet alert plateau. Compared to heavy indicas, couch lock is rare at moderate doses, though fatigue can emerge as the experience fades.
Side effects reflect the high-THC, low-CBD profile and the lively terpene stack. Leafly users frequently mention dry mouth, dizziness, and occasional paranoia as negatives, especially with large doses or unfamiliar settings. Those sensitive to racy sativas should consider a lower starting dose and an environment with minimal stressors.
Set and setting matter with Amnesia, as the strain amplifies prevailing mental tone. In upbeat, social contexts, the talkative and giggly aspects shine; in anxious moments, the same energy can feel too sharp. Proper hydration, a comfortable environment, and incremental dosing help reveal the best of the strain’s personality.
Potential Medical Applications
Anecdotal patient reports and platform reviews suggest Amnesia can be useful for low mood, anhedonia, and situational stress, thanks to its bright, euphoric lift. Leafly’s overview of Amnesia notes uplifting, creative, and euphoric effects that many find helpful for mood disorders. While not a substitute for clinical treatments, the strain’s fast onset can offer short-term relief for motivational slumps and social withdrawal.
The talkative, mentally active quality may benefit those with task initiation difficulties or daytime lethargy. Some patients with attention concerns report improved focus windows at modest doses, especially via vaporization where incremental dosing is easier. However, at higher doses the energetic edge can become distracting, so titration is key.
Pain-related use leans toward neuropathic or tension-related discomfort where distraction and mood elevation provide meaningful benefit. Beta-caryophyllene and humulene may contribute a subtle anti-inflammatory feel, while the overall head lift reframes pain perception for some users. Muscle relaxation is not a primary effect, so those seeking heavy body relief may prefer pairing with a more sedating cultivar in the evening.
Potential drawbacks include anxiety susceptibility and dizziness, particularly in individuals sensitive to stimulating chemovars. Because CBD is typically under 1%, there is limited buffering against THC-mediated side effects. Patients should start low, track responses, and consider combining with a CBD-rich product if anxiety emerges.
Comprehensive Cultivation Guide
Growth habit and vigor: The Professional Genetics Seeds Amnesia is a mostly sativa that stretches aggressively after the flower flip, commonly 2x to 3x in height. Internodes are medium-long and consistent, with strong apical dominance unless topped early. Expect rapid canopy expansion in the first three weeks of flower and plan trellis support from day one of 12-12.
Cycle length and harvest window: Flowering typically runs 10 to 12 weeks from the flip, depending on environment and phenotype. Many growers find a sweet spot around days 68 to 77 for a balanced head-high and fully developed citrus-incense terpenes. If you prefer a slightly deeper body tone, let trichomes amber to 15 to 20% and harvest around day 75 to 80.
Yields: Indoor yields average 500 to 650 g per m2 under high-efficiency LEDs, with dialed-in Scrog rooms surpassing 700 g per m2. Outdoor plants in warm, dry autumns can produce 700 to 1,200 g per plant given long veg times and ample root volume. The cultivar packs on mass in weeks 7 to 10, so avoid early harvests that sacrifice 15 to 25% of potential yield.
Environment: Keep veg daytime temperatures 24 to 28 C and nights 18 to 22 C; in flower, 22 to 26 C days and 18 to 20 C nights maintain terpene sharpness. Relative humidity should sit 60 to 70% in veg, dropping to 45 to 55% in mid flower and 40 to 50% late flower to protect against botrytis. VPD targets of 0.8 to 1.1 kPa in veg and 1.2 to 1.4 kPa in flower help maintain balanced transpiration.
Lighting: Amnesia thrives under robust PPFD, finishing nicely at 800 to 1,000 umol per m2 per second with a daily light integral around 35 to 45 mol per m2 per day in flower. In veg, 400 to 600 umol m2 s with an 18-6 schedule builds thick branching without overshooting height. Watch for light burn on the tallest tops, a common Haze-family issue; a user report for Amnesia Haze specifically mentioned mild light burn, which is consistent with this cultivar’s sensitivity near the diodes.
Training and canopy management: Top once or twice in veg at the 5th to 7th node and employ low-stress training to level the canopy. A single-layer ScrOG at 20 to 30 cm above the pots works well, with a second trellis for support as colas swell. Consider bending or supercropping the most aggressive leaders during early stretch to prevent proximity burn from lights.
Nutrition and EC: Start veg feeds around EC 1.2 to 1.4 with a balanced 3-1-2 style ratio. In early flower, transition toward EC 1.6 to 1.8, and in peak flower weeks 6 to 9, many cultivators succeed at EC 1.8 to 2.0 depending on media and environment. Amnesia responds well to heightened potassium and moderate phosphorus late bloom, but it is sensitive to overfeeding; a grower note on Amnesia Haze mentioned overfeeding issues, which aligns with the need for measured increases.
pH targets: In soilless and hydroponic systems, keep pH 5.8 to 6.2; in soil, 6.2 to 6.8 ensures micronutrient availability. Because terpinolene-rich profiles can mute under nutrient stress, prioritize stable pH and consistent runoff measurements. Cal-mag support is important under intense LED lighting, particularly in soft water regions.
Irrigation strategy: Let soilless media dry back 30 to 50% between irrigations in veg and 40 to 60% in flower to promote oxygenation and root vigor. Drip systems with automated, smaller, more frequent shots can stabilize EC and reduce salt buildup in coco and rockwool. Always pause or reduce irrigation rate late in flower to prevent excess moisture that can dull terpenes and invite mold.
CO2 enrichment: If you run sealed rooms, maintain 800 to 1,000 ppm CO2 for most of flower, with the potential to push 1,100 to 1,200 ppm at peak PPFD if transpiration and nutrition are balanced. CO2 speeds metabolism and can pull the harvest window forward by several days while slightly increasing dry weight. Keep temperatures at the upper end of the recommended range when enriching to maximize assimilation.
Defoliation and airflow: Light defoliation at day 21 and day 42 of flower opens the canopy to reduce humidity pockets and improve light penetration. Avoid aggressive stripping that shocks sativa-leaning plants; targeted leaf removal around dense cola clusters is sufficient. High-velocity horizontal airflow coupled with top-to-bottom exchange keeps the tall canopy healthy.
Pests and IPM: Hazes can attract soft-bodied pests like aphids and thrips, so establish a preventive program with regular scouting. Sticky cards, beneficial insects such as Orius and Amblyseius species, and weekly foliar sprays in veg with mild essential-oil blends or microbial solutions can keep populations suppressed. Avoid foliar applications past week 3 of flower to protect trichomes and flavor.
Autoflower and height control: Autoflower versions of Amnesia Haze are known to grow tall and require tie-downs to keep tops off the lights, a pattern that mirrors the vigor of photoperiod Amnesia genetics. If you run autos or compact spaces, employ low-stress training from early growth and consider pot sizes 7 to 11 liters to limit root-explosive stretch. Gentle bending rather than topping helps autos maintain momentum while controlling verticality.
Harvest metrics and ripeness: Track trichomes with a jeweler’s loupe or digital scope; peak clarity occurs when most trichomes are cloudy with 5 to 10% amber. Terpinolene and ocimene are volatile, so aim to harvest before prolonged late-flower heat events that can strip aroma. Pistils will shift from bright orange to a deeper, rusted tone, and calyxes will swell visibly in the final 10 days.
Dry and cure: Dry at 18 to 20 C and 55 to 60% relative humidity for 10 to 14 days until small stems snap. Cure in airtight containers, burping daily for the first week, then every few days for the next two to three weeks, targeting a stable 58 to 62% jar humidity. A patient cure preserves the citrus-incense top notes and rounds the peppery finish into a smoother, more cohesive flavor.
Outdoor considerations: Amnesia prefers warm, dry late seasons; Mediterranean climates produce the best results with harvests in October. In humid regions, prioritize open-structured training, aggressive airflow, and preventive botrytis measures, as long sativa colas can be vulnerable. Organic super soils rich in aeration and biological activity support terpene expression and reduce risk of nutrient burn.
Cloning and mothers: The cultivar roots readily in 10 to 14 days with 0.3 to 0.6% IBA gel and stable 24 to 26 C media temperatures. Maintain mother plants under 18-6 light, moderate EC around 1.2, and regular pruning to keep internodes tight. Rotating new mothers every three to six months preserves vigor and reduces pest carryover.
Quality control and testing: Given the high THC potential and low CBD, potency can escalate quickly in optimized rooms. Third-party testing often shows 20% or higher THC when environmental and nutritional parameters are tuned. Track terpene totals; 1.5 to 2.5% total terpenes are common targets, with terpinolene leading the profile when the dry-cure is correctly managed.
Commercial notes: From a dispensary standpoint, Amnesia fills the daytime sativa slot with an easily explained flavor and effect story. Leafly’s snapshots of giggly, euphoric, and talkative effects match what budtenders see on the sales floor and help guide first-time sativa shoppers. Consistent structure and yield make it a reliable production cultivar, with the main caution being height control and careful feeding to avoid light burn and overfertilization.
