Written by Ad OpsIntroduction and Overview of Auto Bus 13
Auto Bus 13 is an autoflowering, mostly sativa cannabis strain bred by DaHood Urban Seeds. As the name implies, it combines day-neutral flowering with an uplifting, sativa-leaning effect profile designed for fast, compact cycles. Growers value autos like this for dependable timing—most modern autoflowers complete seed-to-harvest in about 70–90 days under optimal conditions—while connoisseurs appreciate the bright, complex terpene bouquets that sativa-leaning lines often carry.
Because it is an autoflower, Auto Bus 13 initiates bloom based on plant age rather than light cycle, which reduces scheduling complexity. This trait is inherited from Cannabis ruderalis genetics, commonly used to introduce day neutrality. The sativa majority in its heritage typically expresses as taller internodes, vigorous vertical growth, and a cerebral, energy-forward effect profile.
While public lab data on Auto Bus 13 remains limited, the broader category offers useful benchmarks. Contemporary autoflowers frequently deliver THC in the high teens to low 20s percentage by dry weight when cultivated skillfully. Terpene totals in dialed-in environments commonly range from 1.5% to 3.5% by weight, with sativa-leaning profiles skewing toward brighter monoterpenes such as terpinolene, limonene, and ocimene.
Breeding History and Development
DaHood Urban Seeds developed Auto Bus 13 as part of the wider movement to refine autoflowering cannabis into a quality rival for photoperiod classics. Early-generation autos (pre-2015) were often criticized for lower potency and narrow terpene expression. Over the past decade, breeders have closed that gap by backcrossing outstanding photoperiod cultivars into robust ruderalis carriers and selecting aggressively for both cannabinoid output and organoleptic complexity.
Auto Bus 13 sits in this second wave of autoflower innovation, leveraging stable day-neutral genetics without compromising on sativa-like vigor. Sativa-dominant autos are trickier to stabilize due to stretch, longer intrinsic maturation times, and more variable terpene profiles. Breeders counter these challenges by selecting for plants that finish reliably in under 13 weeks from sprout, a key threshold for commercial viability.
Although DaHood Urban Seeds has not publicly disclosed a full pedigree, the model is familiar: cross a high-impact sativa photoperiod line with a proven ruderalis donor, then select for structure, flowering time, and resin quality over multiple filial generations. With each cycle, breeders measure targets like average THC%, node spacing, days to preflower, and resin density. By the time a cultivar like Auto Bus 13 is released, stability checks typically include germination rates above 90%, a narrow finish-time window, and consistent chemotypic tendencies across a large test population.
Genetic Lineage and Inferred Ancestry
The confirmed specifics are that Auto Bus 13 is an autoflower bred by DaHood Urban Seeds and that its heritage is mostly sativa. From a breeding science perspective, the autoflowering trait indicates a ruderalis contribution, often between 20% and 35% of the genome in earlier lines, then reduced through backcrossing as breeders reinforce desired photoperiod cultivar traits. The sativa-majority ancestry suggests photoperiod parents from sativa-leaning families known for crisp, citrus-forward terpenes and energetic effects.
Without a public pedigree, we can infer breeding intent by phenotype. Sativa-leaning autos commonly carry terpinolene or limonene drivers, supported by beta-caryophyllene and ocimene. Morphology tends toward longer internodes and narrower leaflets, hinting at classic sativa influence even in a compact, autoflower framework.
Breeding for a mostly sativa autoflower typically prioritizes resin quality, terpene complexity, and a clean, fast head effect, while dialing back extreme stretch. Stabilizing these traits takes several generations of selection and often involves large pheno hunts. It is reasonable to treat Auto Bus 13 as the synthesis of a vigorous sativa line and a reliable ruderalis donor, optimized for uniformity and a grower-friendly finish.
Botanical Appearance and Morphology
Auto Bus 13 typically grows taller than indica-leaning autos of similar age, with a medium-tall stature when untrained. In well-lit indoor environments, expect 70–110 cm in height from seed in 3–5 gallon (11–19 L) containers, with 15–25 cm internodal spacing. The plant often presents narrow leaflets, a strong central cola, and symmetrical lateral branching, particularly when encouraged with light training.
Bud structure reflects its sativa heritage: calyx-forward, moderately dense flowers rather than ultra-compact indica nuggets. These buds can stack along long spears under adequate PPFD, exhibiting prolific trichome coverage and age-appropriate pistil coloration from white to orange/red as maturity advances. Cooler nights (10–15°F drop) late in flower may prompt subtle lavender hues in some phenotypes due to anthocyanin expression.
A healthy specimen shows vigorous apical dominance early, then redistributes energy to lateral sites as preflower sets in around day 20–28 from sprout. Autoflowers are sensitive to high-stress training; therefore, low-stress training (LST) and gentle defoliation are preferred to keep the canopy even. Final biomass and bud density correlate strongly with uninterrupted growth in the first four weeks, making early environment and root zone management critical.
Aroma and Olfactory Notes
The aroma of Auto Bus 13 fits the mostly sativa profile, leaning bright, zesty, and airy rather than earthy and musky. Common top notes include sweet citrus (lemon-lime), green apple skin, and airy pine, with secondary hints of floral herb and faint fuel. When the flowers are gently squeezed, many growers note a crisp terpinolene-limonene pop reminiscent of fresh zest and peeled mango.
As the buds cure past two weeks, the bouquet tends to round out. Subtle beta-caryophyllene pepper shows through, adding a spicy, resinous backbone that helps the high feel grounded. Ocimene and myrcene, if present in measurable amounts, can contribute to an orchard-like sweetness and a soft herbal layer in the background.
Aroma intensity varies with cultivation and curing technique. Maintaining 60% relative humidity and 60°F during dry (the 60/60 method) preserves monoterpenes that would otherwise volatilize; monoterpenes can begin evaporating significantly above 70°F. Well-cured samples often measure terpene totals between 1.5% and 3.0% by weight, with the bouquet brightening perceptibly during the first 3–4 weeks of cure.
Flavor Profile and Combustion/Vaping Characteristics
On inhalation, Auto Bus 13 typically delivers a clean, citrus-forward flavor with light pine and sweet herbal accents. Vaporized at 170–185°C (338–365°F), expect a pronounced lemon-lime top note (limonene) and a fresh, green character often associated with terpinolene. As temperatures climb above 190°C (374°F), beta-caryophyllene’s pepper and a soft resinous wood come into focus.
The aftertaste is crisp and lingering but not heavy, in line with its sativa-leaning identity. In joints and pipes, combustion can mute some high-volatility monoterpenes, so users who prioritize flavor often prefer convection vaporizers. Filtering and maintaining proper moisture content near 11–12% by weight improves flavor fidelity and smoothness.
Curing strongly influences the flavor expression. A slow 10–14 day dry followed by a 3–6 week cure in 62% RH conditions tends to unlock layered sweetness over time. Samples overdried below 55% RH often taste thinner and lose the bright top notes that define the cultivar.
Cannabinoid Profile: THC, CBD, and Minor Cannabinoids
While publicly available lab results specifically for Auto Bus 13 are limited, data from modern, sativa-leaning autoflowers offers a realistic range. THC content in contemporary autos often falls between 17% and 23% by dry weight under dialed-in conditions, with top performers reaching or modestly exceeding 24%. CBD is typically low in THC-dominant autos, frequently under 1% and often in the 0.1–0.5% range.
Minor cannabinoids commonly present include CBG (0.5–1.5%) and trace THCV (0.1–0.5%), with the exact levels influenced by genotype and environmental factors. Total cannabinoid content for well-grown autos can surpass 20–25% by weight when summing all measured cannabinoids. Environmental stability—consistent light intensity, proper nutrition, and ideal VPD—can influence these outcomes by several percentage points.
Potency is not a fixed attribute; inter-plant variance of 10–20% is common across batches, even in stable lines. Methodology matters: HPLC lab testing on homogenized samples yields the most robust data compared with single-bud spot tests. Growers seeking the higher end of the THC range should prioritize uninterrupted early growth, high but not excessive PPFD (700–900 µmol·m−2·s−1 for autos), and careful late-flower stress avoidance.
Terpene Profile and Chemistry
Auto Bus 13’s terpene profile is expected to center on bright monoterpenes typical of sativa-leaning autos, with terpinolene and limonene often leading. Supporting terpenes likely include beta-caryophyllene, ocimene, and myrcene in smaller but meaningful proportions. In aggregate, total terpene content for well-cultivated autos often lands between 1.5% and 3.5% by weight, with 2.0–2.5% being a common real-world outcome.
Terpinolene contributes a fresh, sweet, and slightly piney aroma; it is frequently associated with energetic, clear-headed strain experiences. Limonene adds citrus zest and has been studied for mood-elevating and stress-modulating properties via serotonergic and dopaminergic pathways. Beta-caryophyllene, a sesquiterpene and CB2 receptor agonist, is notable for anti-inflammatory potential and a peppery base note that rounds out the bouquet.
Volatility differs among terpenes; monoterpenes evaporate more readily than sesquiterpenes. Drying above 70°F or with high airflow can reduce measured terpenes by 20% or more compared with low-temp, slow-dry cures. Maintaining 60–62% RH in cure jars and burping to control CO2 helps stabilize the terpene fraction and preserve the cultivar’s signature brightness.
Experiential Effects and User Reports
Auto Bus 13’s effect profile tends toward clear, alert, and uplifting, consistent with its mostly sativa heritage. Inhalation onset for THC is typically felt within 2–5 minutes, with a peak around 30–60 minutes and a duration of 2–3 hours for most users. The headspace is often described as focused and creative, with a gentle body lightness that avoids heavy sedation.
The cultivar’s likely terpinolene-limonene-caryophyllene synergy tracks with many users’ reports of elevated mood and task engagement. Some individuals sensitive to stimulating profiles may experience a transient increase in heart rate (10–20 bpm above baseline) or anxiety at high doses. Hydration, a comfortable setting, and measured dosing help mitigate overstimulation in those populations.
As with all THC-dominant strains, dose dictates the experience. Low doses (1–3 mg THC inhaled) often deliver a crisp, functional elevation, while higher doses (10–20 mg inhaled) can shift the experience toward immersive, fast-paced head effects. When consumed as edibles, first effects typically arrive at 45–90 minutes, with a 4–6 hour duration and stronger somatic sensations.
Potential Medical Applications and Use Cases
Although Auto Bus 13 lacks strain-specific clinical trials, its likely chemotype provides a basis for informed use. THC-dominant, sativa-leaning profiles are commonly explored for fatigue, low mood, anhedonia, and certain types of neuropathic pain. Beta-caryophyllene’s CB2 activity may contribute to anti-inflammatory effects, and limonene has been studied for anxiolytic and antidepressant-like properties in preclinical models.
For daytime symptom management, inhaled microdosing can be effective. Many patients find 1–5 mg inhaled THC sufficient for mood lift and light analgesia, with minimal cognitive disruption. For neuropathic pain or spasticity, 5–10 mg inhaled may offer more relief, though dose escalation increases the risk of anxiety or tachycardia in sensitive individuals.
Patients prone to anxiety may prefer pairing this cultivar with CBD. Ratios such as 1:1 or adding 5–10 mg CBD orally alongside inhaled THC can modulate intensity without eliminating therapeutic effects. As always, patients should consult healthcare professionals, especially when taking medications metabolized by CYP450 enzymes, as THC and terpenes can influence these pathways.
Comprehensive Cultivation Guide: Indoors, Outdoors, and Greenhouse
Auto Bus 13’s autoflowering nature makes it a flexible choice across environments. Indoors, an 18/6 or 20/4 light cycle from seed to harvest simplifies scheduling and maximizes photosynthetic uptime. Most growers aim for 700–900 µmol·m−2·s−1 PPFD in bloom for autos, which corresponds to a daily light integral (DLI) around 35–45 mol·m−2·day−1 over 18 hours.
In soil or living soil, begin in the final container to avoid transplant shock—autos have limited time to recover. For coco or soilless, 3–5 gallon (11–19 L) fabrics work well, enabling strong root aeration and manageable irrigation. Typical indoor seed-to-harvest timelines run 70–85 days, with earlier phenotypes finishing closer to 70–75 days if environmental targets are consistent.
Outdoors, autos shine in short seasons or latitude-challenged regions. Planting in late spring when nighttime lows exceed 55°F (13°C) reduces stress, with full sun providing 30+ mol·m−2·day−1 DLI mid-summer. Greenhouses provide a hybrid route—natural DLI with environmental control—often producing superior terpene intensity due to broader spectrum light and moderated temperature swings.
Nutrient Management and Irrigation Strategy
Autos appreciate balanced nutrition without overfeeding, especially in the first three weeks. For coco, target an EC of 0.6–0.8 mS/cm during early seedling, climbing to 1.2–1.6 in early vegetative and 1.6–2.0 mS/cm during peak flowering, adjusting by plant feedback. In soil, aim for a living medium with 1.5–2.0% nitrogen in the amended profile and readily available calcium and magnesium to support rapid growth.
pH control is crucial for uptake. Keep 5.8–6.2 in coco/soilless and 6.2–6.8 in soil, with runoff monitored at least weekly. Autos are sensitive to heavy nitrogen late in bloom; taper N and emphasize phosphorus, potassium, sulfur, and micronutrients like boron and molybdenum for proper enzymatic function.
Irrigation frequency should prioritize oxygen at the root zone. In coco, deliver 10–20% runoff per event once roots are established, often 1–3 irrigations per day depending on pot size and VPD. In soil, water to full saturation with even dry-backs, avoiding swings that cause hydrophobic zones; target a 12–24 hour dryback early, extending as the canopy thickens.
Environmental Parameters, Training, and IPM
Environmental control drives autos to their potential. Maintain 24–28°C (75–82°F) day temps and 18–22°C (64–72°F) night temps, with VPD around 0.9–1.2 kPa early and 1.2–1.6 kPa in flower. Keep relative humidity near 65–70% in early growth, tapering to 55–60% mid-flower and 50–55% late to reduce botrytis risk.
Training should be gentle and timely. Low-stress training from day 14–28 can open the canopy and even the apical dominance without stalling growth. Avoid topping after day 21–24 from sprout; if used, a single early topping at the 4th node can work on vigorous phenotypes, but many growers prefer bending and tucking to preserve momentum.
Integrated Pest Management (IPM) should be proactive. Sticky cards and weekly scouting catch early thrips or fungus gnat pressure; maintain clean intakes and quarantines for all incoming plant material. Biological controls like Bacillus thuringiensis israelensis (BTi) in irrigation for gnats and Amblyseius cucumeris for thrips can reduce pressure by 60–80% when deployed preventatively.
Harvest Timing, Drying, and Curing
For a balanced effect, monitor trichomes and pistils. Many growers harvest when 5–15% of trichomes are amber, with the remainder cloudy; this often coincides with 80–90% pistil oxidation and a halt in fresh white pistil production. Autos can ripen quickly in the final 10 days, so daily checks are worthwhile.
A gentle preharvest strategy can protect terpenes. Some growers lower day temperature by 2–3°C and reduce light intensity by ~10–15% in the final week to minimize heat and photo-oxidative stress. Flushing practices vary; in inert media, 7–10 days of reduced EC input can help, while in living soil many growers maintain steady, moderate feeding until the end.
Dry at 60°F (15.5°C) and 60% RH for 10–14 days with minimal airflow directly on the flowers, targeting water activity of 0.55–0.65 aw. After trim, cure in airtight containers at 62% RH, burping daily for the first 7–10 days to off-gas CO2. Properly cured flowers retain 10–12% moisture by weight and maintain terpene expression for months when stored cool and dark.
Yield Expectations and Quality Optimization
Realistic yields for a mostly sativa autoflower like Auto Bus 13 indoors range from 350–500 g/m² under LED lighting for skilled growers. Per-plant yields typically land around 60–120 g in 3–5 gallon containers, with outliers exceeding 150 g when CO2 (800–1,200 ppm) and high PPFD are dialed in. Outdoor or greenhouse single-plant harvests can vary widely (50–150 g) based on DLI and nutrient availability.
Quality and yield track closely with early vigor. Autos perform best with zero stalls in the first four weeks; a single week of stunted growth can reduce final yield by 10–30%. Avoid overwatering seedlings, keep root zones warm, and supply consistent blue-rich light (20–25% blue fraction) early to encourage dense node development.
To optimize resin and terpenes, maintain moderate late-flower temperatures and avoid excessive UV exposure that can degrade monoterpenes. Gentle leafing to expose bud sites without stripping the plant improves airflow and reduces disease risk. Target 0.8–1.4 grams per watt as a realistic efficiency band for modern full-spectrum LEDs with well-managed canopies.
Strain-Specific Tips for Auto Bus 13
Given its mostly sativa heritage, expect noticeable stretch as preflower sets; preemptive LST keeps the canopy even and prevents light burn. Start LST around day 14–18 from sprout, gradually pulling the main stem laterally and promoting several co-dominant tops. This approach can increase top-site count by 30–50% compared with an untrained single cola.
Nutritionally, watch for early magnesium and calcium demand in coco or soft water areas. Supplement with 100–150 ppm calcium and 30–50 ppm magnesium during the fast-growth window (days 10–35) to support cell wall development and chlorophyll production. If leaves lighten between veins while tips remain green, mild Mg deficiency may be present; adjust promptly to avoid compounding stress.
Because sativa-leaning autos can be terp-forward, preserve that profile with a strict dry and cure protocol. Avoid drying rooms above 68–70°F, as higher temperatures can strip terpinolene and limonene rapidly. Use hygrometers in curing jars and keep RH stable to prevent terpene loss and chlorophyll off-notes.
Compliance, Sourcing, and Phenotype Expectations
Auto Bus 13 is bred by DaHood Urban Seeds, and sourcing authentic seed stock is essential for consistent results. Purchase from verified retailers or directly from the breeder when possible, and check for batch identifiers. Most reputable breeders report germination rates above 90% within 48–96 hours under ideal conditions (warm, moist, and oxygenated), though individual outcomes vary.
Phenotype spread in modern autos is generally tighter than in earlier generations, but some variability remains. Expect differences primarily in plant height, internode spacing, and minor shifts in terpene emphasis rather than drastic chemotype swings. Selecting a keeper for future runs is practical for home growers in legal jurisdictions, allowing dial-in of irrigation, training, and nutrition around a known plant.
Always follow local laws regarding cultivation, possession, and distribution. Environmental compliance, odor control, and safe storage are not only legal considerations but also best practices for quality and community relations. For medical users, consult a clinician, especially if combining cannabis with other medications metabolized by CYP3A4, CYP2C9, or CYP2C19.
Final Thoughts and Key Takeaways
Auto Bus 13 brings together the fast, predictable cycle of autoflowering genetics with the bright energy of a mostly sativa profile. Bred by DaHood Urban Seeds, it is engineered for growers who want speed without sacrificing terpene complexity and resin quality. In the garden, success hinges on early vigor, gentle training, and a carefully managed environment that respects the plant’s sensitivity to stress.
From a consumer perspective, expect an uplifting, clear-headed experience with citrus-pine aromatics and a crisp finish. While specific lab data for this cultivar is limited, comparable sativa-leaning autos commonly test in the high-teens to low-20s for THC, with terpene totals around 2% under good curing practices. For medical and wellness contexts, its likely terpene triad suggests mood elevation and daytime functionality, tempered with dose control for those sensitive to stimulation.
Whether you aim for efficient indoor runs, greenhouse terpene excellence, or outdoor speed in short seasons, Auto Bus 13 offers a focused toolkit for success. Apply the numbers—PPFD 700–900, VPD 1.2–1.6 kPa in flower, 60/60 dry—to convert potential into repeatable outcomes. When grown and cured thoughtfully, it delivers the kind of bright, modern sativa expression that has come to define the new generation of autoflowering genetics.
