Amnesia Lemon is a sativa-dominant feminized photoperiod strain created from Amnesia Haze and Lemon Skunk. Bred by Barney’s Farm in collaboration with Soma, this Cannabis Cup-winning line is currently listed at 60% Sativa and 40% Indica, with 26% THC and a 60–65 day flowering period.
If you love bright, zesty haze sativas with real heritage, there is a breeder-friendly classic to try. Super Sativa Seed Club’s Regular Kees’ Old School Haze is a regular, non-feminized haze with a clean, uplifting high, giving dedicated growers the room to select phenotypes and work with genuine old-school genetics.
Recommended Strains
Amnesia Lemon
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THC | 22% - 23% (Medium) |
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Lineage | Amnesia Haze x Lemon Skunk |
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Type | Feminized |
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Height | 4.43 ft | 1.35 m |
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Yield Outdoor | 28.22 oz/plant | 800 g/plant |
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Flowering Time | 8 - 10 weeks |
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Phenotype | 40% Indica / 60% Sativa |
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Effects | Uplifted, Focused, Happy |
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Flavors | Lemon, Spicy, Sweet |
Amnesia Seeds
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THC | 25% - 26% (High) |
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Lineage | Super Silver Haze x Afghan |
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Type | Feminized |
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Height | 6.07 ft | 1.85 m |
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Yield Outdoor | 31.75 oz/plant | 900 g/plant |
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Flowering Time | 10 - 11 weeks |
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Phenotype | 35% Indica / 65% Sativa |
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Effects | Balanced, Powerful, Relaxed |
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Flavors | Lemon, Nutty |
Current Amnesia Lemon seeds reach approximately 100–110 cm indoors and 120–150 cm outdoors. Indoor production is listed at 500–600 g/m², while outdoor plants can produce up to 800 g each and are expected to finish around the first or second week of October.
| Amnesia Lemon Grow Info | Current specification |
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| Breeder | Barney’s Farm |
| Genetics | Amnesia Haze × Lemon Skunk |
| Seed type | Feminized photoperiod |
| Sativa / Indica | 60% Sativa / 40% Indica |
| THC | 26% |
| Flowering time | 60–65 days |
| Indoor height | 100–110 cm |
| Outdoor height | 120–150 cm |
| Indoor yield | 500–600 g/m² |
| Outdoor yield | Up to 800 g/plant |
| Outdoor harvest | October, 1st–2nd week |
| Taste | Lemon, spicy, sweet |
| Aroma | Citrus, earthy, exotic |
| Reported effects | Uplifting, cerebral, energetic |
Amnesia Lemon Genetics
Amnesia Lemon combines Amnesia Haze with Lemon Skunk, creating a 60% Sativa / 40% Indica feminized photoperiod hybrid.
The strain was developed through a collaboration involving Barney’s Farm and Soma after Soma provided a selected Amnesia Haze phenotype. That selection was crossed with Lemon Skunk to create the Amnesia Lemon line covered in this guide.
Growers interested in other genetics from the same breeder can explore the wider Barney’s Farm seed collection.
Because Amnesia Lemon is photoperiodic, indoor growers control when flowering begins. It does not transition automatically according to age, so vegetative duration can be adapted to the available grow space and desired canopy size.
Is Amnesia Lemon Sativa or Indica?
Amnesia Lemon is 60% Sativa and 40% Indica, making it a moderately sativa-dominant hybrid.
Its Sativa influence is reflected in its breeder-described cerebral and uplifting character, although the plant itself remains relatively manageable in height compared with many longer-flowering Haze-type cultivars.
The genetic ratio should not be interpreted as a guarantee of one exact plant shape or consumer experience. Phenotype and growing conditions can influence morphology, while reported effects can vary according to dose, tolerance and the chemical composition of a particular harvest.
How Much THC Does Amnesia Lemon Have?
The current Barney’s Farm specification lists Amnesia Lemon at 26% THC.
This replaces lower figures found in older Growlantis copy and previous breeder materials. Historical catalogs have published lower THC values, but the current product specification should remain the primary reference for the seed line sold today.
A published THC percentage represents breeder data rather than a guarantee that every harvested flower will test at exactly 26%. Phenotype, lighting, plant health, maturity and post-harvest handling can all influence measured cannabinoid concentration.
Amnesia Lemon Flavor and Aroma
Amnesia Lemon has a citrus-led sensory profile that closely reflects its name and parentage. The current breeder specification describes the taste as lemon, spicy and sweet, while its aroma combines citrus with earthy and exotic characteristics.
The Lemon Skunk side contributes strongly to the bright citrus character, while the Amnesia Haze background adds depth to the overall profile.
Although some older descriptions assign specific dominant terpenes such as myrcene, limonene and caryophyllene, the current breeder page does not provide a quantitative terpene breakdown. For that reason, the documented flavor and aroma profile is more reliable than presenting one fixed terpene hierarchy.
Is Amnesia Lemon the Same as Amnesia Lemon Haze?
The official name of the Barney’s Farm cultivar covered in this guide is Amnesia Lemon, not Amnesia Lemon Haze.
Searches for “Amnesia Lemon Haze” or “Lemon Amnesia Haze” likely reflect the fact that Amnesia Haze is one of its documented parents. However, those search variations should not replace the official strain name or be treated as proof that every cultivar marketed as Amnesia Lemon Haze is genetically identical.
For grow specifications such as THC, flowering, height and yield, use the exact Amnesia Lemon seed line rather than transferring data from another Haze-named cultivar.
Amnesia Lemon Flowering Time
Amnesia Lemon has a current flowering period of approximately 60–65 days indoors.
That timing begins after flowering has been initiated through a change in the indoor light schedule. It does not represent the complete period from germination to harvest because the grower determines how long the plant remains in vegetative growth.
Once the plant has developed the desired structure and canopy size, moving to approximately 12 hours of light and 12 hours of uninterrupted darkness initiates flowering. From that point, the 60–65 day breeder range becomes the main timing reference.
For a broader explanation of how photoperiod cannabis develops after the transition, the cannabis flowering stage guide covers the main changes that occur as flowers form and mature.
Amnesia Lemon Height and Plant Structure
Amnesia Lemon reaches approximately 100–110 cm indoors and 120–150 cm outdoors according to the current breeder specifications.
That distinction is more useful than assigning the strain one universal height such as 1.35 m. Indoor growers can also influence final size significantly through vegetative duration, container volume and training.
Barney’s Farm describes the strain as medium height with long, dense colas. That combination means vertical growth remains manageable indoors, but flowering branches may still become heavily loaded as the crop matures.
Growers should plan both canopy width and vertical clearance before initiating flowering rather than waiting until the plant has already filled the available space.
Growing Amnesia Lemon Indoors
Amnesia Lemon is currently listed at 500–600 g/m² indoors.
Its 100–110 cm breeder-listed indoor height makes it relatively manageable compared with many Sativa-dominant cultivars, although vegetative duration still has a strong influence on final canopy size.
Use the vegetative stage to establish healthy roots and enough lateral growth to fill the intended flowering area. There is no universal number of weeks that every Amnesia Lemon plant must remain in vegetation.
The flowering transition should occur when the plant structure matches the available room. Starting 12/12 while adequate vertical clearance remains is generally more useful than allowing excessive vegetative growth and trying to correct height later.
Growing Amnesia Lemon Outdoors
Outdoor Amnesia Lemon reaches approximately 120–150 cm and is currently listed at up to 800 g per plant under favorable conditions.
The breeder lists harvest for the first to second week of October in the Northern Hemisphere. This provides a more useful planning reference than a vague “October harvest,” although local climate and phenotype can still shift actual maturity.
Choose a position with strong light and enough space for branches to develop without excessive overlap. Outdoor yield depends heavily on sunlight, root volume, growing-season conditions and overall plant health, so the 800 g figure should be treated as production potential rather than a guaranteed harvest.
Amnesia Lemon Yield
Current specifications list Amnesia Lemon at 500–600 g/m² indoors and up to 800 g per plant outdoors.
Indoor yield is expressed by canopy area because plant count and vegetative duration can vary considerably. Growers using fewer larger plants and growers using several smaller plants can occupy a similar illuminated area while producing very different weights per plant.
Outdoor production is expressed per plant because plants have greater access to root and canopy space.
Neither specification guarantees a particular result. Light, root health, plant size, environment and cultivation technique all influence how closely an individual grow approaches breeder-listed yield potential.
How to Germinate Amnesia Lemon Seeds
Barney’s Farm recommends the paper-towel method for germinating Amnesia Lemon seeds. Place the seeds between damp paper towels in a warm, dark environment and keep them consistently moist without leaving them saturated.
The current breeder recommendation gives a germination temperature range of approximately 70–90°F (21–32°C). Once a taproot emerges, the sprouted seed can be planted around 5–10 mm deep with the root pointing downward.
Handle the new root carefully during transfer, as physical damage at this stage can slow establishment.
The cannabis seed germination temperature and humidity guide provides additional context on moisture management and common germination methods.
Vegetative Growth
Amnesia Lemon does not have a fixed vegetative duration.
As a photoperiod plant, it remains in vegetative growth until the indoor light schedule is changed. This allows growers to adjust the phase according to available height, root development, container size and the amount of canopy required.
The objective should be to establish a healthy plant with useful lateral branching rather than reaching a predetermined week on a calendar.
Growers in restricted spaces can initiate flowering earlier, while larger rooms may support additional vegetative growth. The breeder’s 100–110 cm indoor figure provides useful context, but cultivation decisions still influence final size.
Training Amnesia Lemon
Amnesia Lemon can be trained during vegetative growth to improve canopy distribution and manage its long flowering branches.
Gentle low-stress branch positioning can spread growth across the available footprint and reduce excessive dominance of the central stem. Topping can also be considered when the plant is healthy and has enough vegetative recovery time before the flowering transition.
No training method is mandatory, and there is no reason to claim that a particular technique automatically increases THC or guarantees a higher yield.
As the long colas gain weight during flowering, branch support can become more relevant. Stakes, ties or a support net may help keep heavily loaded branches upright.
Flowering Development
Once the light schedule changes, Amnesia Lemon enters a flowering period of approximately 60–65 days.
Early flowering can include additional structural development as the plant transitions from vegetative growth and establishes flower sites along the branches. This is why height and canopy structure should be planned before the transition.
As flowering progresses, the long colas become denser and resin development increases. Stable environmental conditions and adequate spacing become more important as the amount of flowering material increases.
During the later part of the 60–65 day range, use the breeder timeline as a reference while assessing the actual maturity of the flowers. Avoid treating one particular day as an automatic harvest point.
Feeding Amnesia Lemon
Amnesia Lemon does not require one universal strain-specific NPK ratio.
Nutrition should be matched to the growing medium, fertilizer program, water quality, root volume, plant size and visible response. A healthy plant developing quickly may consume more nutrients than a smaller plant, but that does not justify assuming every Amnesia Lemon needs aggressive feeding.
As flowering begins, follow the transition recommended for the nutrient system being used rather than automatically increasing phosphorus and potassium to chase larger flowers.
Burned leaf tips, unusually dark foliage, progressive discoloration or stalled growth provide more useful feedback than a rigid Amnesia Lemon feeding calendar.
Watering Amnesia Lemon
Water demand changes substantially as Amnesia Lemon develops from a young plant into a mature flowering canopy.
Avoid using a fixed schedule regardless of conditions. In containers, substrate moisture and pot weight can provide useful information about when irrigation is actually needed.
Young plants with limited roots generally use less water than mature plants, while outdoor demand can increase considerably during warm periods. Soil structure, recent rainfall and root volume should all influence irrigation decisions.
Ensure excess water can drain and avoid keeping the root zone permanently saturated. Watering should support healthy roots rather than follow an arbitrary number of days.
Airflow and Dense Colas
Barney’s Farm describes Amnesia Lemon as producing long, dense colas. That makes internal canopy airflow worth monitoring even though the current technical specification does not provide a specific mold-resistance rating.
Air should move gently above, through and below the canopy rather than only across the top of the plants. Dense overlapping growth can create localized moisture pockets that are not obvious from a room-level humidity reading.
Canopy spacing and selective management can help circulation reach flowering sites without unnecessary heavy defoliation.
The cannabis airflow and mold prevention guide explains why dense flowers can maintain a different microclimate from the surrounding grow room.
Common Amnesia Lemon Growing Problems
One avoidable problem is allowing the plant to become too large before flowering. Although Amnesia Lemon is relatively manageable in height, a long vegetative period can still create a canopy that is difficult to control after the 12/12 transition.
Overwatering and excessive feeding are broader cultivation risks rather than unique weaknesses of the strain. Diagnose them from actual root-zone conditions and plant symptoms rather than assuming Amnesia Lemon needs a predetermined watering or nutrient schedule.
Dense flowering branches also deserve inspection as harvest approaches. Even without a documented strain-specific mold susceptibility, stagnant moisture inside overlapping colas can create problems under unfavorable conditions.
When to Harvest Amnesia Lemon
Indoor Amnesia Lemon is expected to mature after approximately 60–65 days of flowering.
Outdoors, the current breeder window is the first to second week of October in the Northern Hemisphere.
Use those ranges as planning references rather than automatic cutting dates. As harvest approaches, inspect actual flower development and trichome maturity.
There is no need to prescribe one universal percentage of amber trichomes for every Amnesia Lemon phenotype. The correct finishing point can vary slightly between plants and conditions while still remaining close to the breeder’s published window.
Amnesia Lemon Effects
Barney’s Farm currently describes Amnesia Lemon as uplifting, cerebral and energetic.
Those reported effects fit its 60% Sativa classification and Amnesia Haze background, but they should not be presented as guaranteed outcomes.
Individual response varies according to dose, tolerance and the chemical composition of the harvested flowers. The strain’s 26% THC specification indicates substantial potency potential, but cannabinoid percentage alone cannot predict exactly how every person will experience the cultivar.
Amnesia Lemon FAQs
How long does Amnesia Lemon take to flower?
Amnesia Lemon has a current breeder-listed flowering period of 60–65 days, beginning after an indoor plant is switched to the flowering light schedule. This is not the full seed-to-harvest timeline because vegetative growth is controlled by the grower and can vary substantially according to plant size, training and available space.
Is Amnesia Lemon Indica or Sativa?
Amnesia Lemon is a 60% Sativa / 40% Indica feminized photoperiod hybrid. Its documented genetics combine Amnesia Haze with Lemon Skunk. The breeder describes the effects as uplifting, cerebral and energetic, although the genetic ratio itself should not be treated as a guarantee of one exact phenotype or individual experience.
How much THC does Amnesia Lemon have?
Barney’s Farm currently lists Amnesia Lemon at 26% THC. This is higher than several older product descriptions that still show figures around 18–23%. The 26% figure represents the current breeder specification rather than a guarantee that every harvested flower will test identically under all growing and post-harvest conditions.
How much does Amnesia Lemon yield?
Amnesia Lemon is currently listed at approximately 500–600 g/m² indoors and up to 800 g per plant outdoors. These figures describe breeder-listed production potential under favorable conditions. Light, root space, vegetative duration, climate, plant health and canopy management can all affect how closely an individual grow approaches those yields.
How tall does Amnesia Lemon grow?
Current breeder data lists Amnesia Lemon at approximately 100–110 cm indoors and 120–150 cm outdoors. Indoor growers can still influence final size through vegetative duration, training and container volume. The separate indoor and outdoor specifications are more useful than older listings that describe the strain with one universal 1.35 m height.
Is Amnesia Lemon the same as Amnesia Lemon Haze?
The official Barney’s Farm cultivar is called Amnesia Lemon. Searches for “Amnesia Lemon Haze” probably reflect its Amnesia Haze parentage, but that wording should not replace the official strain name. Grow data such as THC, flowering, yield and height should always be matched to the exact Amnesia Lemon seed line.
