Auto Gorilla OG x Auto Purple Amnesia by Short Stuff Seedbank: A Comprehensive Strain Guide

Origins and Breeding History

Auto Gorilla OG x Auto Purple Amnesia is an autoflowering hybrid developed by Short Stuff Seedbank, a pioneer brand in the modern auto scene known for stacking potency and yield into compact, fast life cycles. The cross merges two of Short Stuff’s marquee lines—Gorilla OG and Purple Amnesia—then integrates ruderalis genetics to lock in autoflowering behavior. The stated heritage is ruderalis/indica/sativa, reflecting a three-part ancestral blend engineered for speed, resilience, and a complex chemotype.

Short Stuff’s program emphasized autos that could rival photoperiods in potency, a benchmark that has steadily advanced over the past decade. Reports from growers suggest this cross was selected to bring the diesel-thump and resin density of Gorilla OG into harmony with the electric, incense-citrus lift of Purple Amnesia. The result is an auto designed to finish in roughly 70–85 days from seed while delivering terpene intensity and trichome coverage more typical of longer-cycle haze or OG photoperiods.

The cultivar’s development also appears to target consistency under diverse environments, a hallmark of serious auto breeding. Indoors, it is optimized for 18/6 or 20/4 photoperiods; outdoors, it is intended to flower regardless of day length, enabling multiple seasonal turns in temperate climates. This strategic flexibility, coupled with the genetic depth of its parents, is why the strain is frequently recommended to intermediate and advanced growers seeking premium-quality autos.

Genetic Lineage and Inheritance

Genetically, Auto Gorilla OG x Auto Purple Amnesia layers three broad influences: the indica-heavy resin and fuel-forward profile of Gorilla OG, the sativa-leaning, haze-inspired citrus-lavender complexity of Purple Amnesia, and the timing/flowering control from Cannabis ruderalis. Gorilla OG, a derivative of the Gorilla Glue/OG Kush gene pool, typically contributes dense calyxes, high THC potential, and a heavy, couch-anchoring body effect. In contrast, Purple Amnesia leans toward Amnesia haze lineage, known for limonene- and terpinolene-rich bouquets, mental clarity, and—when purple—anthocyanin expression under cool conditions.

The ruderalis infusion is what drives the autoflowering trait; in practical terms, it decouples floral induction from photoperiod and compresses the life cycle to under 12 weeks in many phenotypes. Breeders often stabilize autos over multiple filial generations to avoid uneven flowering times, height variations, or terpene dilution. In this cross, expression patterns report a 50/50 to 60/40 sativa/indica balance in effect, with indica structure dominating bud morphology and sativa traits manifesting in aroma amplitude and headspace.

Growers commonly note two major phenotypic trends: a greener, OG-leaning phenotype with taller apical dominance and heavier diesel-pine; and a purple-tinted phenotype with more incense-berry citrus, slightly looser upper bracts, and increased color under night temps of 16–18°C. Internodal spacing is typically moderate (2–5 cm indoors under adequate PPFD), reflecting the hybrid’s mixed architecture. The cross inherits a high calyx-to-leaf ratio from the Gorilla side, making manicuring relatively efficient compared with leafier haze-dominant autos.

Botanical Appearance and Morphology

Mature plants usually top out at 70–110 cm indoors in 11–15 L containers under 18/6 or 20/4 schedules, though vigorous phenotypes can stretch to 120 cm with CO2 supplementation. Structure is hybrid: a central cola flanked by 4–8 strong laterals that can be coaxed horizontal with low-stress training. Internodes are typically tight in early growth, opening slightly after the stretch as flower sets in week 3–5 from sprout.

Buds are conical to spear-shaped with a high resin load, often described as having a frosted, sugared look by day 50–60. Calyxes stack densely, especially in OG-leaning phenos, producing a “golf ball to baton” progression along colas. In purple phenotypes, anthocyanin pigment can color bracts and sugar leaves, ranging from violet tips to deep plum, particularly with a 3–5°C night-day differential late bloom.

Trichome density is a standout trait; growers regularly note sticky scissors and thick kief yields when dry sifting trim. Pistil color transitions from cream-white to orange-brown by day 60–70, often with a staggered maturation across the canopy. Leaf morphology tends to be medium-width hybrid leaves in veg, narrowing slightly as flowers mature and nitrogen is tapered down.

Aroma (Scent) Profile

The bouquet marries OG fuel and pine with haze-derived citrus, floral incense, and a berry-lavender accent. Early flower (weeks 3–5) leans toward fresh lime zest and pine needles, with faint diesel undertones. Mid to late flower (weeks 6–10) intensifies into a layered nose: gas-forward top notes, ripe citrus and sweet berry mid-tones, and a grounding pepper-wood base.

Growers operating carbon filters should anticipate noticeable aroma by day 30, with peak volatile output from day 50 onward. Anecdotal odor intensity ratings consistently land in the “high” category; a 4/5 to 5/5 on grower scales is common. In sealed rooms, total terpene concentrations in the room air can spike during late bloom, so proactive filtration or ozone (in ducting only) is recommended.

The sensory arc evolves further during cure. A 4–8 week cure rounds sharp diesel edges into a smoother gas-citrus character while bringing lavender, black pepper, and sweet berry forward. Proper humidity control at 58–62% preserves these volatiles and reduces terpene loss, which can exceed 30% if dried hot and fast above 24°C.

Flavor and Mouthfeel

On the palate, expect diesel-citrus front end with pine and sweet berry trailing, anchored by a caryophyllene pepper note on the exhale. Vaporization at 175–190°C often highlights limonene and pinene, giving a bright lime-pine snap before the heavier floral-spice tones appear. Combustion emphasizes the gas and pepper facets, with sweeter purple notes emerging as the joint progresses.

The mouthfeel is medium-weight and resinous, with a lingering lemon-diesel film that persists for several minutes. Terpene volatility means flavor is significantly improved by a slow dry and extended cure; many users report the “purple candy” hint surfaces only after week 3 of curing. Grinding just before consumption helps reduce oxidation and preserves the top-note citrus components.

Pairings that complement the profile include black coffee, citrus sorbets, or high-cacao dark chocolate, which amplify limonene’s brightness and caryophyllene’s spice. For edibles, butter-based infusions tend to carry the berry-lavender tones more distinctly than MCT oils. As with most gas-forward hybrids, excessive decarboxylation temperatures can dull the complexity and push flavor toward generic “hashy,” so precision is key.

Cannabinoid Profile and Potency Metrics

This autoflower typically expresses high THC potential by auto standards, with grower and vendor reports clustering around 18–24% THC under optimized conditions. Less dialed-in environments—low PPFD, suboptimal VPD, or nutrient stress—can pull potency down into the 14–18% range. CBD is usually minor at 0.1–0.6%, while CBG commonly lands between 0.2–0.8%, reflecting modern hybrid chemotypes that retain trace cannabinoids.

Total cannabinoids in well-grown samples frequently exceed 20% by weight, which is competitive with many photoperiod hybrids. Autos have narrowed the potency gap in recent years; controlled indoor grows with stable PPFD (700–900 μmol·m⁻²·s⁻¹ at canopy) and correct DLI (45–55 mol·m⁻²·day⁻¹ in bloom) tend to hit the upper end of reported ranges. Phenotypic selection within a pack can further refine outcomes, as cannabinoid expression often varies by 10–20% between individuals.

Tolerance build-up follows typical high-THC kinetics; daily heavy use can noticeably blunt effects within 7–10 days. For new users, a 2.5–5 mg THC starting dose is pragmatic, with most experienced consumers finding 10–20 mg a functional space and 25–40 mg a clear psychoactive threshold. Vaporization onset is rapid, often within 1–3 minutes, while oral routes take 45–120 minutes with a longer plateau.

Terpene Profile and Chemical Nuances

Although chemotypes vary, a dominant trio is common: myrcene, limonene, and beta-caryophyllene, with meaningful contributions from alpha- and beta-pinene and occasional terpinolene skews. Total terpene content frequently falls in the 1.2–2.2% w/w range, with standout phenotypes reaching ~2.5% when grown cool and cured slowly. Typical distributions reported by growers include myrcene at 0.3–0.8%, limonene at 0.2–0.6%, and caryophyllene at 0.2–0.5%, alongside pinene at 0.1–0.3% and humulene/linalool each at 0.05–0.2%.

From a pharmacological perspective, beta-caryophyllene is notable as a selective CB2 receptor agonist, which may contribute to perceived anti-inflammatory qualities without adding to intoxication. Limonene has been associated with mood elevation and anxiolytic-like effects in preclinical contexts, while myrcene is often linked with muscle relaxation and a sedative synergy when paired with THC. Pinene can counterbalance memory blunting by supporting alertness, a feature that complements the Amnesia-side uplift in some phenotypes.

Environmental conditions strongly shape terpene output. Cooler late-bloom temperatures (18–22°C) and stable late-flower RH (45–50%) help preserve monoterpenes, which are highly volatile above 24°C. Gentle handling during trimming and a slow dry at 10–14 days can preserve 10–20% more terpene content compared with fast, warm dries, according to grower-scale comparisons.

Experiential Effects and Use Scenarios

The effect profile blends an initial, fast-onset cerebral spark with a steady, body-centered weight that arrives 15–30 minutes in. Many users describe the first phase as bright, talkative, and sensory, with enhanced focus or creativity—attributes consistent with limonene/pinene influence. The secondary phase leans tranquil and analgesic, aligning with OG lineage and myrcene/caryophyllene synergy.

Subjectively, the overall intensity trends toward strong for experienced users and very strong for novices when consumed at typical inhalation doses. Duration for inhaled routes averages 2–3 hours, with a soft afterglow beyond that window; oral routes can extend effects to 4–6 hours with a prolonged plateau. Functional use cases include music, gaming, brainstorming, or winding down after physical activity, though high doses can turn sedative.

Side effects align with high-THC hybrids: dry mouth and eyes are common, and rapid titration can provoke transient anxiety or racing thoughts in sensitive users. A slower ramp—one or two small puffs or a 2.5–5 mg edible aliquot—reduces the chance of overshooting. For daytime productivity, light dosing is advisable; for sleep or deep relaxation, allow 60–90 minutes for the body effects to peak.

Potential Medical Uses and Considerations

Given its THC-forward profile and terpene ensemble, this cross is a candidate for addressing pain, stress, and appetite loss in select individuals. THC has documented analgesic and antiemetic properties, and beta-caryophyllene’s CB2 activity aligns with anti-inflammatory signaling, potentially aiding musculoskeletal discomfort. Myrcene’s sedative synergy may support sleep initiation when used in the evening, while limonene’s mood-elevating associations can be helpful for low mood or anhedonia.

Real-world reports point to use in neuropathic pain, migraine adjunct relief, and appetite stimulation, particularly when inhaled for rapid onset. For anxiety-prone patients, caution is warranted—high-THC chemovars can exacerbate symptoms if titrated too quickly or dosed too high. Balanced dosing strategies, such as combining with CBD-rich material or microdosing in 1–2 mg increments, may improve tolerability.

As with all cannabis, individual response varies with genetics, tolerance, and context. Drug-drug interactions are possible via CYP450 pathways, and THC can transiently increase heart rate and lower blood pressure; those with cardiovascular conditions should consult clinicians. For medical users new to autos or this specific cross, maintaining a symptom journal and starting low, going slow remains best practice.

Comprehensive Cultivation Guide (Seed to Jar)

Life cycle and timelines: Auto Gorilla OG x Auto Purple Amnesia commonly finishes in 70–85 days from sprout under 18/6 or 20/4 light. Seedling emerges in 2–4 days at 24–26°C and 70–80% RH, with visible preflowers by days 18–25. Stretch typically runs days 20–35, with bulk fill from days 35–65 and ripening thereafter.

Lighting and DLI/PPFD: For seedlings, target 200–300 μmol·m⁻²·s⁻¹ PPFD for a DLI of ~13–19 mol·m⁻²·day⁻¹ at 18 hours. In veg/early flower, raise canopy PPFD to 500–700 for a DLI of ~32–45; in mid/late bloom, 700–900 achieves a DLI of ~45–58 at 18 hours. Autos generally respond well to 18/6 or 20/4 schedules; reserve >900 PPFD for dialed-in environments with CO2 at 800–1,000 ppm and carefully managed VPD.

Environment targets: Maintain daytime temps at 24–28°C in veg and 22–26°C in flower, with a night drop of 2–4°C to encourage color in purple phenotypes. Relative humidity should sit at 65–75% in seedling, 55–65% in veg, 45–55% in mid bloom, and 40–45% in late bloom. VPD targets of 0.8–1.1 kPa in veg and 1.2–1.5 kPa in bloom support robust gas exchange while minimizing pathogen risk.

Media and pH/EC: In coco or inert soilless, aim for pH 5.8–6.0; in soil, pH 6.2–6.7. Early EC can start at 0.8–1.0 mS·cm⁻¹, rising to 1.2–1.4 in late veg, 1.6–2.0 in early/mid bloom, then taper to 1.2–1.6 in late bloom. Ensure 10–20% runoff in coco to avoid salt buildup; in soil, allow the top 2–3 cm to dry before thorough irrigation.

Nutrition and NPK emphasis: Seedling nutrition is mild (approximate NPK 2-1-2 equivalents), shifting to 3-1-2 in veg to support leaf and stem growth. Transition to bloom blends around day 21–28 with 1-2-2, increasing K to support resin and density, and finish with 0-3-3 emphasis in late bloom. Supplement Ca/Mg, especially under LED lighting, at 100–150 ppm Ca and 40–60 ppm Mg to prevent interveinal chlorosis and tip necrosis.

Containers and root strategy: Autos prefer final containers from the start to avoid transplant shock; 11–15 L (3–4 gal) fabric pots balance root volume and oxygenation. If transplanting, use rapid methods before day 12 and minimize root disturbance. Fabric pots accelerate dry-backs, encouraging stronger root branching; adjust irrigation frequency accordingly.

Training: Low-stress training (LST) from days 14–28 is the safest way to open the canopy, improve light distribution, and even out the cola set. Gentle tie-downs of the main stem and selective leaf tucking can boost yield by 10–25% by exposing more flowering sites. High-stress training (topping, FIM) is possible in vigorous phenos if performed by day 18–21, but it can reduce final yield if mistimed; many growers skip topping on autos for this reason.

Expected size and yield: Indoors, plant height of 70–110 cm and yields of 60–120 g per plant are typical, with 350–500 g·m⁻² achievable in optimized tents under ~600–800 W of modern LED per 1.2 × 1.2 m footprint. Outdoors, 40–150 g per plant is common depending on latitude, season length, and nutrition. CO2 enrichment and precise environment control can push yields higher, but stress avoidance is more impactful with autos than aggressive feeding alone.

Watering technique: In coco, frequent, smaller irrigations maintain ideal root zone EC/pH and oxygen; two to four feeds per day in late bloom are common for automated setups. In soil, water to slight runoff and allow adequate dry-back; overwatering is the most common early-stage mistake. Aim for 10–15% runoff in inert media and ensure good drainage to prevent hypoxic roots and opportunistic pathogens.

Pest and disease management: Dense, resinous colas can invite botrytis in