Written by Ad OpsHistory and Breeding Background
CBD #5 x ErdPurt is a purposeful cross from ACE Seeds, a breeder known for landrace preservation and climate-adapted hybrids. The project marries a CBD-dominant parent line, CBD #5, with ErdPurt, an early-finishing, mostly indica selection adapted to cool northern latitudes. The aim was clear: deliver reliable CBD-rich flowers with minimal intoxication, robust resilience, and a harvest window that suits short-season growers. In practice, the cross has become a pragmatic option for patients and cultivators who need predictable CBD chemotypes in compact, hardy plants.
ACE Seeds’ ErdPurt lineage was developed from Afghan and Pakistani highland genetics, selected across seasons for cold and rain tolerance, anthocyanin expression, and fast maturity. By pairing it with a CBD-forward line, the breeder targeted a 10:1 to 20:1 CBD:THC ratio common to modern therapeutic cultivars. The result preserves ErdPurt’s trademark quick finish and dense indica morphology while dialing in CBD abundance. The combination addresses a longstanding gap: medically oriented CBD plants that can finish outdoors by late summer in northern climates.
While precise release year notes vary among community records, the cross aligns with ACE Seeds’ broader CBD initiatives that expanded during the 2010s. In that period, demand for CBD flower rose sharply; market analyses estimate CBD product revenue grew at double-digit compound annual growth rates from 2015 onward in North America and Europe. Breeding programs responded by stabilizing CBD lines that could deliver consistent ratios across harvests. CBD #5 x ErdPurt exemplifies this trend with its practical agronomy and patient-friendly chemistry.
Grower reports emphasize the breeder’s focus on stability and field performance. Seed lots show uniform indica structure, moderate internodal spacing, and a relatively modest stretch, all traits typical of the ErdPurt side. Meanwhile, CBD #5 contributes chemotypic directionality toward low THC and high CBD with narrow variance. That balance makes the strain attractive for both commercial and home cultivation where conformity reduces risk.
For patients, the history matters because it translates into predictable outcomes. Consistent ratios mean easier titration and fewer surprises in day-to-day symptom management. For growers, early finishing and resilience translate into lower loss rates in inclement seasons. Together, these attributes explain why CBD #5 x ErdPurt has a quiet but loyal following among CBD-focused growers in temperate and colder regions.
Genetic Lineage and Indica Heritage
Genetically, the cross combines CBD #5, a CBD-dominant parent selected for low THC expression, with ErdPurt, a mostly indica line that excels in cold resistance and speed. ErdPurt itself traces to Afghan-Pakistani highland genetics that thrive in short summers and cool nights. That heritage contributes broad leaves, thick petioles, compact nodes, and pronounced anthocyanin potential in late bloom. As a result, the cross expresses a classic indica profile in structure and finish.
ACE Seeds lists the strain’s heritage as mostly indica, which aligns with grower morphology and flowering data. Indoor plants seldom exceed 80–110 cm without training, and outdoor plants commonly top out at 120–180 cm depending on root volume and season length. Flowering typically completes in 7–8 weeks indoors, with outdoor harvests possible from late August to mid-September at 45–50°N. These timings mirror ErdPurt’s reputation for speed, adapted here to a CBD chemotype.
On the chemotype axis, CBD #5 biases cannabinoid synthase activity toward CBDA. Populations show a spectrum where the majority of phenotypes maintain THC below 1% by dry weight, and CBD between 8% and 14% under competent cultivation. Minor balanced phenotypes can appear, but the overarching distribution tilts toward CBD-dominant profiles.
The indica influence also shows up in environmental tolerance and water management. Plants handle cool nights better than many CBD hybrids, which is a hallmark of ErdPurt’s selection history. Root vigor is robust, supporting rapid establishment in the first 3–4 weeks of vegetative growth. These baseline traits make the variety forgiving to newer growers.
It is worth noting that anthocyanin expression is partially environmental and partially genetic. Cooler night temperatures below 15 °C in late flower increase the likelihood of purple coloration, while pH, phosphorus availability, and overall plant stress can modulate intensity. With CBD #5 x ErdPurt, growers regularly report purples and deep reds on calyx tips and sugar leaves under fall conditions. Indoors, mild temperature drops late in flower can elicit similar hues.
Appearance and Morphology
Visually, CBD #5 x ErdPurt is compact and sturdy, with a classic indica frame. Plants form a dominant central cola surrounded by 6–10 strong lateral branches, each capable of carrying dense tops. Leaves are broad and dark green with rounded serrations, typically five to seven blades on mature leaves. Petioles are comparatively short, encouraging a bushy profile that suits small spaces.
Inflorescences are thick and resinous, presenting tight calyx stacking typical of Afghan-leaning indicas. Calyx-to-leaf ratio is moderate to good, easing trimming while maintaining protective leaf coverage. Under cooler nights, sugar leaves and bracts can express violet to burgundy tones. The trichome coverage is high, often creating a frosted appearance by week six of bloom.
Internode spacing stays close, generally 2–5 cm indoors when light intensity is sufficient. Under lower light, the plant can stretch more, but overall elongation rarely exceeds 1.2x after the flip to 12/12. Structural density helps the plant resist wind outdoors and makes it amenable to trellising indoors. Stems are thick and fibrous, supporting heavy flowers without extensive staking.
Root systems develop quickly, making early pot ups beneficial. In 1-gallon containers, roots often fill the volume in 14–21 days of veg, suggesting timely transplants to 3 or 5 gallons for final flowering indoors. Outdoors, 25–50 liter containers or in-ground beds allow the plant to realize full potential. Healthy root mass correlates with sturdier branching and higher bud density late in flower.
At harvest, buds often show a peppered mix of lime and purple, with amber-orange pistils. Trichome heads skew toward cloudy by week seven, with amber developing at a predictable pace. The final bag appeal is understated but elegant, an artisanal look rather than an ultra-fluffy modern dessert cultivar. Resin feel is tacky yet not overly greasy, which pressers find favorable for rosin yields.
Aroma and Bouquet
The aromatic profile leans earthy, spicy, and foresty, combining Afghan hash notes with a clean herbal lift. Early in flower, the room smells like damp soil and cedar shavings with a light citrus peel top note. By week six, black pepper and bay leaf nuances intensify, reflecting a dominant caryophyllene-humulene backbone. Subtle hints of dried berry or cranberry tea can appear in cooler-finished phenotypes.
Grinding a cured bud releases layers of incense and pine with a faint chocolate-cocoa undertone. Myrcene contributes a soft, musky base reminiscent of mossy woodland after rain. Limonene and pinene supply the brighter edges, giving the nose a snap that keeps it from being too heavy. Together, the bouquet feels grounded and calming rather than flashy.
In side-by-side comparisons with other CBD indicas, CBD #5 x ErdPurt often registers as lower in overt fruit esters and higher in spice and wood. Terpene intensity is moderate to strong, especially when grown organically with living soils. Well-grown examples can perfume a small room with a few grams exposed. However, it remains less obtrusive than pungent skunky modern hybrids.
Aromatics evolve through the cure, with the spice deepening and the herbal tones smoothing out by week three in jars. By week six, the bouquet integrates, and the cedar-pepper profile becomes more polished. Properly slow-dried flowers keep their vivid top notes longer and avoid the grassy mid tones. Long cures also emphasize chocolate and tea-like subtleties.
Terpene content by weight typically falls in the 1.5–2.5% range under optimized cultivation, according to grower lab tests. Environmental stress and overfeeding can depress terp production by 15–30%, underscoring the value of balanced nutrition and stable climate. The strain’s relatively thick cuticle seems to protect aromatic compounds during late flower. Gentle handling and lower trim-room temperatures further preserve the bouquet.
Flavor Profile
On inhalation, the flavor opens earthy and resinous, like a mild hashish with cedar plank and peppercorn. The smoke is generally smooth when cured 3–6 weeks, with minimal throat scratch compared to higher-THC afghanicas. A gentle, slightly sweet herb note rides underneath, occasionally flashing cocoa or dark tea. Exhales reveal a dry wood and bay leaf finish that lingers pleasantly.
Vaporization emphasizes the fresher elements and softens the earthy base. At 175–185 °C, pinene and limonene come forward, brightening the profile with a subtle citrus-herb lift. Increasing to 190–200 °C builds the peppery caryophyllene and brings in more myrcene body. Many users note the flavor complexity peaks around 190 °C, balancing brightness and depth.
When rolled, the joint flavor tends to be consistent from start to finish, with less terp drop-off than many modern dessert cultivars. That stability stems from the dominant sesquiterpenes, which volatilize more slowly than lighter monoterpenes. Hemp papers accentuate the wood-spice tones, while rice papers keep a cleaner, lighter presentation. Water filtration can mute some of the cedar and cocoa tones while making the pepper smoother.
Edible preparations maintain the earthy-spice signature, especially in butter or coconut oil infusions. Decarboxylation at 105–115 °C for 30–45 minutes typically yields good CBD activation while conserving more volatile aromatics. In chocolates or spiced baked goods, the strain’s bay leaf and cocoa undertones integrate naturally. Tinctures in MCT oil keep a clean, herbal aftertaste with minimal bitterness.
Overall, CBD #5 x ErdPurt’s flavor is refined and traditional rather than candy-like. It appeals to users who enjoy classic hash and woodsy profiles. While not a terpene bomb, it is articulate and balanced. Proper curing elevates nuance without overwhelming the palate.
Cannabinoid Profile and Ratios
CBD #5 x ErdPurt is designed to be CBD-dominant with minimal THC, aligning with ACE Seeds’ intent for functional, low-intoxication flowers. Community and small-lab reports typically place CBD in the 8–14% range by dry weight when grown under adequate light and nutrition. THC commonly measures between 0.3% and 1.2%, producing CBD:THC ratios from roughly 10:1 to 20:1. Occasional balanced phenotypes can appear, usually in the 1:1 range of 5–8% each, but these are less common.
Total cannabinoids often land between 12% and 18%, depending on cultivation method and harvest timing. Harvesting at peak milky trichomes with minimal amber tends to maximize CBD content, as prolonged senescence can slightly reduce cannabinoid totals. Nitrogen overfeeding in late flower may suppress cannabinoid expression by 5–10% in some grows. Conversely, stable PPFD around 700–900 µmol m−2 s−1 and proper VPD correlate with upper-range results.
For concentrates, CBD rosin yields from flower are frequently reported in the 18–22% range by weight under 90–100 °C press temperatures and 4–6 tons of pressure. Hash yields vary by sift method but commonly fall between 12% and 16% of input mass for well-grown material. Decarboxylation efficiency for CBD typically lands at 87–92% under standard decarb protocols. Post-decarb potency tests often show CBDA conversion that aligns with expected stoichiometry.
Users sensitive to THC find that absolute THC per session remains low due to the high CBD ratio. For example, a 150 mg inhaled dose of flower at 12% CBD and 0.6% THC delivers roughly 18 mg CBD and 0.9 mg THC. That ratio reduces the probability of intoxication while providing a physiologically meaningful CBD dose. This makes the strain suitable for daytime symptom relief without impairing function for most users.
It is important to remember that chemotype distributions exist within seed populations. Pheno-hunting and third-party lab tests confirm the intended CBD dominance in the majority of individuals. For medical producers, validating every production batch with certificates of analysis is a best practice. Consistency over time builds trust and supports precise patient dosing.
Terpene Profile and Minor Compounds
The terpene spectrum centers on beta-caryophyllene, myrcene, and humulene, with supporting roles from limonene, alpha-pinene, and linalool. In well-grown samples, total terpene content commonly measures 1.5–2.5% of dry weight. Beta-caryophyllene often registers around 0.3–0.6%, myrcene at 0.4–0.8%, and humulene at 0.1–0.3%. Limonene typically falls in the 0.1–0.2% range, with pinene and linalool each 0.05–0.15%.
Caryophyllene is unique among common terpenes as a selective agonist at the CB2 receptor. This interaction is linked to anti-inflammatory effects in preclinical models, potentially complementing CBD’s immune-modulating properties. Myrcene contributes to the slow, body-centered calm that users report, while humulene adds a dry, herbal bitterness and has been studied for anti-inflammatory synergy. Limonene can modulate mood and perceived stress, and pinene is known to counteract memory impairment from THC in mixed chemotypes, though THC levels here are low.
Minor compounds like ocimene, terpinolene, and nerolidol may appear in trace amounts depending on phenotype and environment. These can shift the fragrance slightly toward floral, herbal, or green fruit notes. While not dominant, such minors contribute to the overall complexity and may have their own physiological effects in concert. The ensemble creates a consistent, grounded aromatic identity.
Boiling points guide consumption strategies for flavor preservation. Limonene volatilizes near 176 °C, pinene around 156 °C, myrcene around 166 °C, linalool about 198 °C, and caryophyllene above 200 °C. Staging vaporization temperature from 175 to 195 °C allows the brighter terpenes to shine first, then the spice and depth to follow. This staggered approach often yields a fuller sensory experience.
Environmental levers meaningfully impact terpene outcomes. Slightly cooler night temps and moderate potassium in late flower support terpene retention. Excessive heat or aggressive defoliation can depress terpene concentration by 10–25% in sensitive phenotypes. Post-harvest handling, specifically slow drying at 18–20 °C and 55–60% RH, preserves the nuanced top notes.
Experiential Effects and User Reports
Subjective effects emphasize calm, clarity, and body comfort with minimal intoxication. Users frequently describe muscle loosening, decreased jaw tension, and a steadying of breathing rhythm within minutes of inhalation. Headspace remains clear and functional, with little to no euphoria beyond a gentle mood lift. Anxiety attenuation is commonly noted, particularly in social or task-oriented settings.
Onset via inhalation typically occurs in 5–10 minutes, with peak effects at 20–40 minutes and a plateau of 2–3 hours. Edibles begin later, around 45–90 minutes, peaking at 2–3 hours, and can last 6–8 hours. The indica influence contributes to a subtle heaviness in the limbs at higher doses, though sedation is usually mild compared to THC-rich Afghan indicas. At low doses, the strain is largely daytime compatible for most users.
Compared with balanced 1:1 CBD:THC strains, CBD #5 x ErdPurt produces less headiness and fewer short-term memory disruptions. Users sensitive to THC-induced anxiety often find this cultivar markedly friendlier. In small observational groups, reports of racy heart rate or paranoia are rare. Dry mouth and mild eye dryness remain the most common side effects.
Physical relief trends include reduced muscle soreness after exercise and easing of tension-type headache severity. Some users report diminished nerve zing in peripheral neuropathies, though responses vary widely. Others cite a lessening of gut cramping and a smoother appetite curve without strong munchies. The overall profile is steadying and restorative rather than exciting.
Tolerance builds slowly due to low THC exposure. Many users maintain consistent benefits with the same daily dose for weeks, adjusting only for situational needs. For sleep, pairing a later session with a slightly higher dose increases body heaviness without a large cognitive fog. The steady CBD and caryophyllene base underpins the calm, while limonene and pinene keep it from feeling dull.
Potential Medical Uses
CBD #5 x ErdPurt’s CBD dominance and low THC make it a candidate for users seeking symptom management without intoxication. CBD has been studied for seizure reduction, with pharmaceutical-grade CBD showing median seizure frequency reductions of roughly 36.5% in Lennox-Gastaut and Dravet syndromes. While whole-flower dosing differs from purified products, the general anxiolytic and antispasmodic properties of CBD are relevant. The low THC level further reduces risks for anxiety exacerbation in sensitive individuals.
Pain and inflammation are common targets. Preclinical and small clinical studies suggest CBD may modulate inflammatory responses through multiple pathways, including TRPV1 and adenosine signaling. The presence of beta-caryophyllene, a CB2 agonist, may synergize for peripheral inflammation, potentially benefiting arthritis and muscle soreness. Patient anecdotes often cite utility for post-exercise recovery and tension-type headaches.
Anxiety relief is a prominent theme in user reports, echoing research in which 300 mg oral CBD reduced public speaking anxiety in controlled settings. Whole-flower dosing rarely reaches such single-session totals, but repeated smaller doses can accumulate steady-state levels. The light limonene content may add a subjective lift that complements CBD’s calm. For generalized daytime unease, inhaled doses delivering 10–25 mg CBD are commonly reported as helpful.
Sleep support is moderate. Low THC content limits strong sedative effect, yet the indica body ease and myrcene content can improve sleep latency for some. Users with sleep onset issues rather than maintenance insomnia may benefit most. Combining a small evening dose with good sleep hygiene often yields better outcomes than high single doses.
Gastrointestinal comfort is another potential area. CBD has been explored for inflammatory bowel conditions, and anecdotal use suggests cramp reduction and improved gut calm. Because THC is low, appetite stimulation is mild, which many patients prefer day to day. As with any medical use, consultation with a clinician and attention to drug interactions, particularly with CYP450-metabolized medications, is advised.
Comprehensive Cultivation Guide
CBD #5 x ErdPurt is a forgiving, mostly indica cultivar bred by ACE Seeds with strong outdoor credentials and straightforward indoor performance. Indoors, expect 7–8 weeks of flowering, with stretch ratios of 0.8–1.2x from the flip. Plant height typically stays in the 80–110 cm range without training and can be held to 50–80 cm via topping and low-stress training. Outdoors at 45–50°N, harvests are feasible from late August to mid-September, beating autumn rains.
Propagation and early veg are uncomplicated. Maintain 22–26 °C and 60–70% RH for seedlings, with gentle airflow to promote sturdy stems. In soil, target pH 6.2–6.8; in coco, 5.8–6.2. Feed at EC 0.8–1.2 mS cm−1 initially, increasing to 1.4–1.6 by late veg.
Lighting targets of 300–500 µmol m−2 s−1 PPFD in early veg and 600–900 µmol m−2 s−1 in bloom support cannabinoid and terpene development. Keep daily light integral around 35–45 mol m−2 d−1 in flower for best results without CO2 enrichment. If supplementing CO2 to 900–1,200 ppm, PPFD up to 1,000–1,100 can be utilized, but watch temperature and VPD accordingly. Canopy temps of 24–26 °C day and 18–22 °C night are ideal.
Training responds well to topping at the fifth node and low-stress training to open the canopy. A single topping plus light defoliation around weeks 3 and 6 can improve airflow without stressing the plant. Screen of green is effective, as the short internodes allow dense bud sites to fill a trellis quickly. Sea of green from clones is also efficient, with 16–25 plants per square meter in small containers.
Nutrient management should emphasize calcium and magnesium, especially in coco or RO water systems. Aim for N-P-K in veg around 3-1-2 and in bloom around 1-3-2, tapering nitrogen after week three of flower. Maintain EC 1.8–2.2 in mid-bloom and 2.0–2.4 in late bloom if the plant shows no tip burn. Organic living soils also perform admirably, with top-dressed minerals and compost teas boosting microbial life and terpene content.
Watering practices benefit from full saturation followed by substantial dry-back. In 5-gallon pots, expect 2–3 irrigations per week in mid-bloom, depending on environment. Avoid constant moisture that invites root issues, especially at lower temperatures. The cultivar’s strong root vigor means it can uptake water quickly when the rootball is mature.
Pest and disease resistance is better than average thanks to the ErdPurt side. Nevertheless, integrated pest management is wise: sticky traps, weekly leaf inspections, and, if needed, beneficials like Amblyseius andersoni for mites. Bud rot susceptibility is moderate; dense flowers require airflow and 45–50% RH in late flower. Strong oscillating fans and clean defoliation practices mitigate risk.
Outdoors, CBD #5 x ErdPurt thrives in temperate summers with cool nights. Plant after last frost and aim for full sun with good wind exposure. In-ground beds amended with compost and 2–3 kg m−2 of well-aged manure deliver steady nutrition. Mulch to stabilize soil temperature and moisture; drip irrigation keeps foliage dry and reduces fungal pressure.
Yield potential is respectable for a fast, CBD-leaning indica. Indoors, 400–500 g m−2 is a realistic target under 600–700 W m−2 of efficient LED lighting. Outdoors, 500–900 g per plant is attainable in 50-liter containers or raised beds with early starts. The compact size ensures that even balcony grows can produce meaningful medicine.
Harvest timing is key for CBD expression. Start examining trichomes in week seven and target mostly cloudy heads with 5–15% amber for a balanced body effect. Delaying harvest to push amber higher can marginally increase sedation but may reduce CBD total by a small percentage. Take representative samples from upper and mid canopy for accuracy.
Drying and curing preserve the strain’s delicate spice-wood profile. Dry at 18–20 °C and 55–60% RH for 10–14 days until small stems snap. Jar cure at 58–62% RH, burping daily the first week, then weekly for 4–6 weeks. Proper curing can increase perceived terp intensity by 15–25% according to sensory panels.
Post-harvest processing for rosin or hash is straightforward. For rosin, pressing at 90–100 °C for 60–120 seconds preserves aromatics and yields 18–22% in many runs. Ice water hash works well with the dense, resinous flowers, often returning strong 90–120 micron fractions. Store extracts cold and in the dark to minimize terpene oxidation.
Conclusion and Key Takeaways
CBD #5 x ErdPurt, bred by ACE Seeds, delivers a mostly indica framework optimized for cold tolerance, early finishing, and CBD-dominant chemistry. Typical CBD levels fall between 8% and 14%, with THC commonly under 1%, achieving 10:1 to 20:1 ratios suitable for clear-headed relief. The aroma and flavor skew earthy, peppery, and woodsy with subtle herbal and cocoa undertones, supported by caryophyllene, myrcene, and humulene.
From an experiential standpoint, effects emphasize calm body comfort, anxiety reduction, and functional clarity. Side effects are usually limited to mild dry mouth and eye dryness, with minimal intoxication even at moderate doses. Medical users often target muscle tension, mild to moderate pain, and situational anxiety, while sleep support is moderate and context-dependent.
Cultivation is accessible for beginners and efficient for experienced growers. Indoors, plan for 7–8 weeks of flower, strong airflow, and modest training to maximize yields in limited space. Outdoors at mid to high latitudes, the early harvest window helps beat autumn rains, and the plant’s resilience reduces loss risk.
Key numbers summarize the profile well: 7–8 weeks flowering, 400–500 g m−2 indoors, 500–900 g per plant outdoors, 1.5–2.5% total terpenes, and CBD:THC ratios typically above 10:1. These data points, together with consistent morphology, explain the strain’s reputation as a reliable CBD workhorse. For growers and patients seeking dependable, low-THC flower, CBD #5 x ErdPurt is a targeted, effective choice.
As always, test each harvest to confirm chemotype and tailor dosing to individual needs. Store cured flower in airtight containers at 16–20 °C away from light to maintain potency over months. With attentive cultivation and careful curing, the strain’s subtle bouquet and calming profile shine. The result is a practical, elegant CBD cultivar well-suited to both home gardens and small medical production.
