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Auto Cream by Bulk Seeds: A Comprehensive Strain Guide

Ad Ops Written by Ad Ops| December 04, 2025 in Cannabis 101|0 comments

Auto Cream is an autoflowering cannabis cultivar developed by Bulk Seeds, a European breeder known for offering stabilized, production-oriented seed lines. The strain is formally listed as a ruderalis and indica hybrid, reflecting a focus on compact stature, rapid lifecycle, and a sedative, desse...

Origins and Breeding History

Auto Cream is an autoflowering cannabis cultivar developed by Bulk Seeds, a European breeder known for offering stabilized, production-oriented seed lines. The strain is formally listed as a ruderalis and indica hybrid, reflecting a focus on compact stature, rapid lifecycle, and a sedative, dessert-leaning profile. In practice, Auto Cream was built to deliver a sweet, creamy bouquet within the convenience and speed that define modern autos.

Bulk Seeds released Auto Cream during the broader wave of autoflower innovation that accelerated in the early to mid 2010s. This was a period when breeders systematically crossed indica dessert phenotypes with increasingly vigorous ruderalis donors. The goal was to shorten the crop cycle to 9 to 11 weeks from seed while preserving resin output and flavor complexity reminiscent of established photoperiod dessert strains.

The detailed parental makeup of Auto Cream has not been made public by Bulk Seeds, which is common in commercial breeding to protect competitive advantage. However, the cultivar’s morphology and aroma strongly imply an indica-dominant photoperiod mother crossed to a stabilized ruderalis male. The result is a plant built for growers who want sweet-forward, comfy effects without the planning overhead of light schedules.

It is worth noting that naming collisions in the market can create confusion. Seed databases list similarly named autos, such as Auto Cream Mass by Mr. Hide Seeds, which is a distinct product. Genealogies also sometimes reference Unknown Strain lines from Original Strains in complex crosses, but those placeholders do not describe Bulk Seeds’ Auto Cream and should not be conflated with its lineage.

Genetic Lineage and Taxonomy

Auto Cream falls taxonomically into the ruderalis and indica category, with indica as the dominant growth and effect influence. The ruderalis contribution provides autoflowering traits and photoperiod independence, enabling flowering regardless of day length. This genetic structure typically supports a compact plant, fast maturation, and a calm, body-forward effect set.

In terms of likely breeding architecture, a dessert-leaning indica mother would be selected for creamy, caramel-like aromatics and dense resin, then crossed into a high-vigor ruderalis donor. Subsequent filial generations and backcrosses would stabilize early flowering, internodal tightness, and a uniform terpene signal. Bulk Seeds’ emphasis on production traits suggests selection pressure for high calyx-to-leaf ratios and reliable trichome density across phenotypes.

While precise parental names remain undisclosed, the chemotype pattern aligns with indica-dominant autos that typically produce THC in the mid-to-high teens with modest CBD and trace minors. This is consistent with many modern autos that balance speed with potency. Auto Cream therefore occupies a comfortable middle ground between classic sedative indicas and contemporary fast-finishing autos suited for both indoor and outdoor runs.

The market also contains lines with similar naming that can confuse lineage assumptions. Auto Cream Mass by Mr. Hide Seeds, for example, appears in community genealogy lists, and unrelated crosses note unknown Original Strains ancestry or links to Guide Dawg in other contexts. Those references reflect broader market genealogies and do not enumerate the specific lineage of Bulk Seeds’ Auto Cream.

Morphology and Appearance

Auto Cream typically displays compact, bushy architecture with short to medium internodal spacing that averages 2 to 4 centimeters on main branches. Plants commonly finish between 60 and 100 centimeters in height indoors when grown in 7 to 12 liter containers. The canopy is naturally symmetrical, and with light training the plant tends to form a crown of golf-ball to soda-can colas.

Leaves are broad and dark to medium green, with the classic indica hand shape and moderately thick petioles. As flowering progresses, fan leaves may take on subtle lime highlights at the tips if nitrogen is tapered correctly. Anthocyanins occasionally express in cooler night temperatures, creating lavender tinges on sugar leaves late in bloom.

Bud structure is dense and resin sticky, with a calyx-forward stacking that improves trim efficiency. Mature flowers present olive to bright green calyxes braided with orange to copper pistils that oxidize toward rust by late maturity. Trichome coverage is notably above average for an auto, producing a frost that is clearly visible on sugar leaves and upper bracts.

Under magnification, trichomes develop a consistent carpet of bulbous and capitate stalked glands. When optimally fed and lit, the heads turn cloudy uniformly by week 8 to 10 from sprout, with amber appearing in the 5 to 15 percent range thereafter. This even ripening profile contributes to a predictable harvest window and balanced effect.

Aroma and Bouquet

Auto Cream leans toward sweet, creamy aromatics punctuated by warm earth and subtle spice. Early in flower, the bouquet is gentle and vanilla-like with hints of nougat and fresh cream. By mid to late bloom, the nose deepens to include caramel, nutty undertones, and a whisper of pepper.

Dominant terpenes that commonly align with this aroma include myrcene, beta-caryophyllene, limonene, and linalool, each contributing familiarity and warmth. Myrcene adds ripe fruit and soft, woody notes, while caryophyllene imparts the faint pepper edge. Limonene lifts the sweetness, and linalool rounds the profile with a soft, floral cream.

After a thorough cure, the bouquet becomes more confectionary and less grassy, as chlorophyll breaks down and terpene volatility settles. Jars opened after 3 to 6 weeks of curing often release a pastry-like aroma reminiscent of custard and browned sugar. In warm rooms above 24 degrees Celsius, the sweeter high notes volatilize quickly, so cool storage preserves the creamy tone.

Growers frequently report that aroma intensity tracks with canopy health and late-stage potassium availability. Proper airflow and humidity control in late bloom reduce terpene loss due to oxidative stress. Gentle handling at harvest further preserves the creamy bouquet that defines this cultivar’s appeal.

Flavor Profile and Consumption Notes

On inhalation, Auto Cream delivers a smooth, sweet flavor that recalls caramel cream, soft vanilla, and a hint of toasted nuts. The smoke is typically easy on the throat when cured adequately, with minimal bite even at higher temperatures. Exhale lingers with cream and light spice, occasionally revealing a faint cocoa or biscuit note.

Vaporization highlights the confectionary qualities more distinctly, especially between 175 and 190 degrees Celsius. At lower temps, the sweetness and floral linalool elements move forward, while slightly higher settings draw out caryophyllene-driven spice. Combustion creates a toastier profile, which some users find closer to caramelized sugar or shortbread.

The cure materially changes flavor density. A minimum of 14 days of slow drying and 3 to 6 weeks of curing at 58 to 62 percent relative humidity preserves top notes and prevents grassy undertones. Buds rushed to the jar or overdried below 52 percent relative humidity often taste muted and lose the creamy character.

Pairing Auto Cream with beverages can accentuate its dessert vibe. Non-acidic drinks like oat milk, mild black tea, or room-temperature water let the sweetness lead. High-acid pairings such as citrus sodas may overshadow the softer vanilla and nutty edges.

Cannabinoid Composition and Potency

While Bulk Seeds has not published official laboratory certificates of analysis for Auto Cream, the strain’s chemotype aligns with many modern indica-leaning autos. Grower reports and third-party tests on similar ruderalis and indica autos commonly show total THC between 14 and 20 percent by dry weight under optimized conditions. Outliers above 20 percent can occur with high-intensity lighting and excellent cultivation, but averages tend to sit in the mid to high teens.

CBD is generally low in dessert-leaning autos unless specifically bred for it. Typical CBD values run between 0.1 and 0.8 percent, with trace amounts of CBG often landing between 0.3 and 1.0 percent. THCV, CBC, and CBDV usually appear only in trace quantities below 0.5 percent combined.

Autoflowers show more variability in potency when stressed, and suboptimal lighting can depress THC measurable by several percentage points. Under LED PPFD targets of 700 to 900 micromoles per square meter per second in late flower, many autos reach their best potency expression. Autos grown under less than 400 PPFD or in nutrient-imbalanced media frequently test on the lower end of THC ranges.

If precision dosing is important, patients should seek batch-specific lab results whenever possible. Absent COAs, assume a moderate potency level and titrate slowly. Start low and increase dose gradually to find the sweet spot without overshooting into sedation.

Terpene Spectrum and Chemovar Insights

Auto Cream exhibits a terpene ensemble typical of sweet, creamy indicas, with total terpene content commonly falling between 10 and 20 milligrams per gram of dried flower. Within that, myrcene is often the anchor, frequently measuring in the range of roughly 3 to 6 mg g. Beta-caryophyllene tends to follow at around 2 to 4 mg g, contributing a peppery warmth and potential CB2 activity.

Limonene is usually present in the 1 to 3 mg g range, brightening the profile and adding light citrus that reads as confectionary when paired with linalool. Linalool itself may land near 0.5 to 1.5 mg g, lending a floral, lavender-like softness that many perceive as creamy. Supporting terpenes, including humulene at 0.5 to 1.2 mg g and trace ocimene, round out the bouquet.

From a chemovar standpoint, this balance primes Auto Cream for calm, comfortable effects with a gentle mood lift. Myrcene and linalool are frequently discussed in relation to relaxation and ease, while caryophyllene’s CB2 agonism has been studied for potential roles in inflammation modulation. Limonene adds a subtle uplift that can offset heavy sedation and support a content, balanced experience.

Terpene expression is strongly environment-dependent. Cooler, drier late-flower conditions often preserve higher terpene levels by slowing volatilization and oxidation. Proper drying and curing can retain a greater fraction of these aromatics, strengthening the creamy profile that makes Auto Cream distinctive.

Experiential Effects and User Reports

Auto Cream is commonly described as delivering a mellow, full-body relaxation that builds gradually over 10 to 20 minutes when inhaled. The initial phase brings a comforting calm and light euphoria that is friendly to conversation and media. As the session progresses, users often note reduced muscle tension and a contented mood that remains grounded rather than racey.

The psychoactivity is usually moderate, with a ceiling that feels accessible to newer users at small doses and nicely efficient for experienced consumers. Compared to sharper sativa hybrids, Auto Cream is less likely to provoke anxious spirals, especially when doses are kept conservative. In higher doses, couchlock becomes more probable due to the indica leaning of the chemotype.

Duration varies with route and dose. Inhalation effects typically last 2 to 3 hours, with a gentle taper and possible drowsiness near the end of the arc. Oral ingestion can extend effects to 4 to 6 hours or more, deepening sedation and increasing body heaviness.

Common side effects are mild and include dry mouth and dry eyes. As with many THC-dominant profiles, overconsumption may lead to momentary disorientation or early sleep. Users sensitive to THC should start with one or two small inhalations or a 1 to 2 mg oral dose and wait to evaluate the response.

Potential Therapeutic Applications

The relaxing and sweet-leaning profile of Auto Cream positions it as a candidate for evening use and wind-down routines. The combination of myrcene, linalool, and caryophyllene often aligns with reductions in perceived stress and muscular tension. For individuals seeking a calmer mood without overt stimulation, the cultivar’s balance can be an asset.

Potential applications may include sleep onset support, given the sedative lean that emerges at moderate doses. Users with mild to moderate nociceptive discomfort sometimes report relief due to the body-centered character of the effects. Beta-caryophyllene’s interaction with CB2 receptors offers a plausible mechanistic link to anti-inflammatory pathways, though results vary by individual and formulation.

For appetite support, Auto Cream’s gentle euphoria and relaxation may encourage eating without aggressive munchies in small doses. Anxiety-prone individuals can benefit from vaporized microdoses, where linalool and limonene contribute to a calmer headspace. Those with high sensory sensitivity should avoid stacking with other depressants to prevent excessive sedation.

Dosing considerations are crucial. Newer patients may start with 1 to 2 mg THC orally or 1 to 2 small vapor draws, titrating upward by 1 to 2 mg increments every few sessions to find a therapeutic window. Experienced patients might settle between 5 and 10 mg for evening relief, reserving 10 to 20 mg doses for more persistent discomfort or severe insomnia under medical guidance.

Cultivation Guide: From Seed to Cure

Auto Cream is designed to be straightforward for small spaces and quick turnarounds, making it suitable for first-time growers and efficient for veterans. The seed-to-harvest timeline typically runs 65 to 85 days depending on phenotype, environment, and lighting density. Many phenotypes begin visible flowering by day 21 to 28 from sprout.

Lighting is central to performance. Aim for 18 hours on and 6 hours off throughout the life cycle, or 20 on and 4 off if heat management is solid and electricity costs permit. Target 300 to 450 PPFD in early vegetative growth, 500 to 700 PPFD in early flower, and 700 to 900 PPFD from mid to late flower; with supplemental CO2 near 1000 to 1200 ppm, experienced growers may push 1000 to 1200 PPFD.

In soil, maintain pH between 6.2 and 6.8; in coco, 5.8 to 6.2. EC guidelines typically run 0.8 to 1.2 mS cm in seedling stage, 1.2 to 1.6 in vegetative preflower, and 1.6 to 2.0 in mid to late bloom depending on cultivar appetite. Autos prefer consistent but moderate feeding rather than aggressive swings or heavy early nitrogen.

Environmental targets support resin and terpene retention. Temperatures of 24 to 27 degrees Celsius in daytime and 19 to 22 degrees at night with 55 to 60 percent relative humidity in veg work well. Shift to 45 to 50 percent RH in early flower and 40 to 45 percent in late flower, maintaining VPD around 0.8 to 1.1 kPa in veg and 1.1 to 1.4 kPa in flower.

Choose containers between 7 and 12 liters for indoor runs, with fabric pots promoting aeration and root vitality. Water to achieve 10 to 20 percent runoff in inert media, and avoid overwatering in soil by waiting for the top 2 to 3 centimeters to dry before irrigation. A general rule is to apply water equal to roughly 10 percent of pot volume, adjusting by plant size and evapotranspiration rate.

Training should be gentle, especially before day 25 from sprout when autos make rapid hormonal transitions. Low-stress training that bends the main stem early can open the canopy and increase light interception. Topping is optional and risky with autos; if attempted, top once above the 3rd or 4th node by day 18 to 21 on vigorous phenotypes only.

Nutrient strategy favors a steady ramp. Maintain slightly higher calcium and magnesium with LED lighting, particularly in coco where cal-mag supplementation is often necessary. In late flower, back off nitrogen and increase potassium to support density and terpene retention, avoiding hard flushes that can shock autos.

Outdoors, Auto Cream benefits from full sun and performs well across multiple seasonal windows. At mid latitudes, seeds started every 4 to 6 weeks from spring through late summer can deliver two to three harvests per season. Shelter flowers from heavy rain during the final two weeks to reduce botrytis risk on dense colas.

Integrated pest management should begin on day one. Sticky traps and weekly scouting help catch fungus gnats and thrips early, while predatory mites can be introduced preventatively in veg. Avoid oil-based foliar sprays after week three of flower to prevent residue and flavor degradation.

Harvest Timing, Drying, and Curing

Determining the ideal harvest window for Auto Cream hinges on trichome observation. A balanced profile often arrives when trichomes are mostly cloudy with roughly 5 to 10 percent amber, which typically occurs around day 70 to 80 from sprout under strong lights. Harvesting earlier at mostly cloudy with few ambers leans the effect toward clarity, while waiting for 15 to 20 percent amber increases couchlock and sedation.

Before chop, consider a 24 to 36 hour dark period to slow transpiration and encourage final resin push, though this is optional. Remove large fan leaves on the plant to simplify drying without exposing too much surface area. Handle flowers gently to preserve trichome heads and reduce terpene loss.

For drying, target 18 to 20 degrees Celsius and 58 to 62 percent relative humidity with light air movement that does not directly hit buds. Under these conditions, a 10 to 14 day dry is ideal, leading to clean snaps at the stem and a stabilized internal moisture content near 10 to 12 percent. Faster dries risk trapping chlorophyll and green flavors.

Curing takes flavor from good to excellent. Store trimmed buds in airtight glass at 58 to 62 percent relative humidity for 3 to 6 weeks, burping jars daily for the first week and then every few days. Terpene intensity typically increases over the first month, with creamy and caramel notes becoming more prominent as harsh compounds dissipate.

Yield Expectations and Grow Metrics

Indoor growers can expect Auto Cream to produce approximately 350 to 500 grams per square meter under efficient LEDs with good environmental control. Plant-count strategies influence results, with 4 to 9 plants per square meter commonly used depending on pot size and training. Skilled growers with high PPFD and dialed nutrition may exceed these figures, though autos can be sensitive to early stress.

Per plant, typical indoor yields range from 40 to 120 grams in 7 to 12 liter pots. Outdoors in full sun, single plants will often output 30 to 90 grams depending on weather, soil quality, and season timing. The dense structure favors quality per square meter rather than extremely large individual plants.

In terms of efficiency, many home cultivators target 0.6 to 1.2 grams per watt under modern LED systems. Achieving the upper end requires consistent PPFD, ideal VPD, and well-timed training to maximize light capture. Overfeeding or underfeeding, especially with nitrogen in early flower, can reduce yield by 10 to 25 percent.

Root health correlates strongly with output. Good aeration, steady moisture, and moderate EC curtail stress and support better calyx stacking. Frequent minor adjustments often outperform drastic changes, especially with autos that do not pause for recovery the way photoperiods can.

Common Pitfalls and Troubleshooting

The most frequent issue with Auto Cream and similar autos is early stress that permanently limits size. Topping too late, aggressive defoliation, or repotting after day 14 can stunt plants and reduce yields by a third or more. Start seeds directly in their final container to avoid transplant shocks whenever possible.

Overwatering in the seedling stage is another common problem. Ruderalis-leaning seedlings prefer a moist but not waterlogged medium, and a light wet-dry cycle encourages root exploration. Use pots with ample aeration and avoid keeping trays full of runoff that backwicks into media.

Nutrient burn often appears when autos are fed on photoperiod schedules, especially with high nitrogen in weeks 3 to 5. Trim back N as soon as pistils emerge, and supply steady calcium and magnesium to prevent interveinal chlorosis under LED lighting. If leaf tips claw or burn, flush gently and resume at a lower EC.

Environmental swings can cost resin and terpene content. Aim for stable temperature and humidity, and keep canopy leaf surface temperatures close to 26 degrees Celsius during peak light. If foxtailing appears, reduce PPFD by 10 to 15 percent and increase distance from the light source.

Comparisons and Market Context

Auto Cream occupies a niche among sweet, dessert-leaning autoflowers that prioritize creamy aromatics and relaxing effects. It differs from citrus-forward limonene-heavy autos by offering more confectionary and nutty warmth. Compared to fuel or gas-dominant lines, Auto Cream is gentler on the nose and more bedtime friendly.

In seed databases and market catalogs, similarly named cultivars can create ambiguity. Auto Cream Mass by Mr. Hide Seeds is a separate cultivar and should not be conflated with Auto Cream by Bulk Seeds. Genealogy aggregations also include many entries labeled as unknown Original Strains crosses or hybrids that reference Guide Dawg and other lines; those are part of general lineage mapping and not specific to Bulk Seeds’ Auto Cream.

For growers selecting among dessert autos, key selection factors include finishing time, height, and terpene reliability. Auto Cream is a match for compact spaces and chill, evening sessions, while larger or more sativa-leaning dessert autos might be better for daytime use. If you value a creamy profile with low maintenance and a consistent finish, Auto Cream’s positioning is compelling.

Responsible Use, Tolerance, and Safety

Like all THC-dominant cannabis, Auto Cream should be approached with mindful dosing. Begin with small inhalations or low oral doses and wait for onset before taking more, especially if you are new or returning after a break. Combining with alcohol or other sedatives can amplify drowsiness and impair coordination.

Tolerance can develop with frequent daily use. Cycling off for 48 to 72 hours each week or taking a 7 to 10 day break every few months can reset sensitivity for many users. Keeping notes on dose size and effect quality helps maintain consistency and avoid overshooting.

Special populations should exercise caution. Individuals with cardiovascular conditions, psychiatric vulnerabilities, or those taking medications that interact with the endocannabinoid system should consult healthcare professionals before use. Never drive or operate machinery under the influence.

Historical and Industry Significance

Auto Cream’s arrival corresponds with a key industry pivot in the 2010s when autoflowers matured from novelty to reliable production cultivars. Improvements in ruderalis donor quality and selection discipline allowed autos to close much of the gap with photoperiod strains in resin, flavor, and potency. The result has been widespread adoption by home growers and commercial operators seeking rapid turnaround and stealth-friendly plants.

The dessert category flourished in parallel as consumers gravitated to comfort flavors that align with evening relaxation. Auto Cream fits this trend by delivering accessible potency and a pastry-forward bouquet without complicated light manipulation. With multiple harvests per outdoor season and quick labors indoors, it highlights the convenience that defines the newest generation of autos.

As market catalogs expanded, naming overlaps became more frequent, which is why breeder attribution matters. Bulk Seeds’ authorship of Auto Cream distinguishes it from similarly named entries in public databases. References to unknown Original Strains genealogy or hybrids that include Guide Dawg are part of larger lineage mapping and are not indicators of Auto Cream’s parentage.

Quick Reference: Key Stats and Targets

Lifecycle: 65 to 85 days from seed to harvest under 18 6 or 20 4 light schedules. Height: typically 60 to 100 centimeters indoors, compact and bushy with 2 to 4 centimeter internodes. Yield potential: 350 to 500 grams per square meter indoors; 40 to 120 grams per plant depending on pot size and training.

Potency: commonly mid to high teens THC, with reported ranges around 14 to 20 percent; CBD low, often 0.1 to 0.8 percent. Terpenes: total 10 to 20 mg g with myrcene 3 to 6 mg g, beta-caryophyllene 2 to 4 mg g, limonene 1 to 3 mg g, and linalool 0.5 to 1.5 mg g. Effects: calming, body-forward relaxation with gentle euphoria and low tendency toward anxiety at modest doses.

Environment targets: day temps 24 to 27 C, night 19 to 22 C; humidity 55 to 60 percent in veg, 45 to 50 percent early flower, 40 to 45 percent late flower. Light intensity: 500 to 700 PPFD early flower, 700 to 900 PPFD late flower, higher with CO2. pH: 6.2 to 6.8 in soil, 5.8 to 6.2 in coco; EC 1.2 to 1.6 in veg, 1.6 to 2.0 in bloom.

Harvest indicator: mostly cloudy trichomes with 5 to 10 percent amber for balanced effects. Drying and cure: 10 to 14 days at 18 to 20 C and 58 to 62 percent RH; jar cure 3 to 6 weeks. Training: LST preferred; topping only early on vigorous phenotypes if at all.

Notes on Data and Sources

Public, strain-specific laboratory data for Auto Cream by Bulk Seeds are limited, which is common for many commercial autoflowers. The cannabinoid and terpene ranges presented here are derived from patterns observed in indica-leaning autos with similar morphology and reported effects. These values should be treated as informed estimates rather than guarantees for any given batch.

Market databases sometimes include entries with similar names or partial genealogies that can mislead lineage assumptions. For example, Auto Cream Mass by Mr. Hide Seeds is a separate cultivar, and genealogy lists that mention unknown Original Strains crosses or Guide Dawg reflect broader hybrid mapping rather than Auto Cream’s parentage. When precision matters, consult batch-specific certificates of analysis and breeder guidance.

Growers and patients should rely on direct observation, iterative testing, and quality control practices to tailor outcomes. Environmental tuning, careful drying, and patient, small-step dose titration will consistently outperform reliance on nominal strain names. Use the ranges and targets provided as a structured starting point, and refine based on your real-world results.

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