Written by Ad OpsOrigin and Breeding History
Green Crack x Super Silver Haze was bred by Dr. Blaze to capture the daytime clarity and drive of Green Crack with the long-lasting, euphoric lift of Super Silver Haze. The project aimed to preserve a mostly sativa expression while shortening flowering time and boosting resin production compared to classic Haze lines. The result is a cultivar that feels purpose-built for productivity, creativity, and social energy without the jitter of stimulants.
Green Crack rose to prominence in the 1990s California scene and was popularized after Snoop Dogg dubbed it “Green Crack” for its electric energy. Although lineage reports vary, Green Crack is widely associated with Skunk #1 genetics and an Afghani influence that contributed to its vigor and yield. Super Silver Haze, meanwhile, was originally developed in the late 1990s by breeders linked to the Green House/Mr. Nice lineage and famously won the High Times Cannabis Cup three years in a row (1997–1999), cementing its reputation for top-tier sativa effects.
Leafly reports that Super Silver Haze is mostly energizing with higher-than-average THC, which aligns with the cross’s primary effect goals. Green Crack is consistently described by sources like CannaConnection and Leafly as energized, uplifting, and focus-enhancing, often recommended as a daytime companion. Dr. Blaze’s cross leverages this shared energizing signature to create a modern, head-clear sativa that sustains momentum for hours.
The breeding intent here appears to be synergy rather than novelty: sharpen Green Crack’s laser-like focus with SSH’s citrus-floral, creative rise, and extend the ride with Haze’s long arc. Many modern growers seek sativa energy in a plant that still finishes in 9–10 weeks instead of 12–14; this cross squarely targets that practicality. In markets that increasingly value functional, purposeful effects, Green Crack x Super Silver Haze fills a well-defined niche.
Genetic Lineage and Sativa Dominance
This hybrid combines Green Crack—commonly tied to Skunk #1 with an Afghani backcross—with Super Silver Haze, classically described as (Skunk #1 x Northern Lights) x Haze. That means it stacks Skunk twice, blends in Haze for soaring euphoria and creative push, and borrows Northern Lights’ reliability and resin to round out structure. The result is a mostly sativa chemotype with dense trichomes and a terpene balance that leans citrus, sweet, and floral.
Both parents share a reputation for a terpinolene-forward bouquet, the archetypal driver of many energetic, sparkling sativas. Haze-family terpenes often include terpinolene, myrcene, limonene, and caryophyllene, while Green Crack commonly shows terpinolene-caryophyllene-myrcene triads. These shared chemotypic anchors help explain why the cross feels consistent even with phenotype variability.
In practical terms, growers should expect sativa-dominant morphology: longer internodes than indica-leaning hybrids, an assertive stretch in early bloom, and a calyx-forward bud structure that avoids excessive density. These traits help the cultivar resist bud rot in humid climates but demand training indoors to control height. Outdoors, long-season and Mediterranean climates allow full expression, while cooler or wetter regions benefit from selective defoliation and ample airflow.
Based on parent performance, this cross likely shows a 70–85% sativa expression across seed lots, with a minority of phenotypes leaning slightly more hybridized in structure. The sativa majority aligns with reported user experiences that center on energy, focus, and uplift. That said, the subtle influence of Northern Lights and Afghani in the background can add body and resin density, improving bag appeal and extract yields without dulling the high.
Morphology and Visual Appearance
Expect medium-long spears and foxtail-averse colas when environmental stress is managed, with good calyx-to-leaf ratios for an easier trim. Flowers usually show lime to neon-green hues accented by vibrant orange pistils, especially in the Green Crack-leaning phenotypes. Under cooler late-flowering nights (15–18°C), some plants display faint lavender highlights along sugar leaves and upper calyces.
Trichome coverage is heavy for a sativa-dominant cultivar, often creating a frosty sheen that’s apparent even pre-harvest. Resin heads tend to be medium in size with robust stalks, a favorable trait for both hand trimming and mechanical extraction. The overall bag appeal registers high because of the contrast between bright greens, orange pistils, and the thick microcrystalline coat.
Plant height is vigorous: indoors, untrained plants commonly reach 100–140 cm, while outdoors they can exceed 200–250 cm in long seasons. A typical stretch factor of 1.6–2.0x is observed in the first two to three weeks after flip, similar to SSH. Growers using high-intensity LEDs may see tighter internodes and slightly reduced stretch if PPFD and blue spectrum are dialed in during pre-flower.
Buds are elongated with pronounced calyx stacking rather than golf-ball clustering. This structure improves airflow through colas, which reduces mold risk but also demands patient ripening to maximize density. Late-stage swelling can be significant in weeks 7–10, so staking or a double-trellis is recommended to prevent stem creep and micro-lodging.
Aroma and Bouquet
On the vine, the bouquet is bright and unmistakably Haze-forward: sweet citrus, fresh peel, and a compelling floral lift. Leafly’s analysis of Haze-family terpenes highlights that citrus-floral tandem, and it’s front-and-center here, especially when plants are grown with consistent VPD and low late-flower humidity. Underlying notes of sweet herb, pine, and white pepper often appear as the flowers ripen.
Green Crack contributes a sparkling, candy-citrus top end that can read as orange-mango on some phenotypes. Meanwhile, Super Silver Haze adds tangy lemon and a faint incense-like depth, particularly after a long cure. In aggregate, the nose presents as citrus-forward, floral, and slightly spicy, with occasional tropical hits.
A well-cured batch often shifts from sharp citrus to a sweeter pastry-lemon character after three to four weeks in jars at 62% RH. In competitive markets, this evolution can be a selling point because early-cured samples skew sharper and later-cured samples skew more rounded and dessert-like. In either case, the nose announces a classic sativa profile that’s vivid without being skunky.
Breaking the bud brings out fresh-sliced lemon, crushed herbs, and a whisper of pine sap. The grind accentuates floral and citrus esters alongside a cedar-spice edge reminiscent of SSH. This aromatic range makes the strain appealing to consumers who appreciate clean, high-tone bouquets rather than gassy or heavy-fuel profiles.
Flavor and Smoke Quality
The inhale delivers a sweet citrus pop that leans lemon-lime with a sugared peel impression, consistent with vendor notes that describe SSH as a sugary toke with tangy citrus and earth. That sweetness is punctuated by a lightly floral edge, especially distinct in slow-dried, properly cured flowers. Green Crack phenotypes can layer in a tropical nuance, often perceived as mango or orange hard candy.
On the exhale, expect a crisp herbal spine and a faint peppery tickle from caryophyllene, which keeps the finish clean. Vapes at 170–190°C preserve lemon, floral, and pine notes excellently, while combusted sessions add toast and light spice. Aftertaste is lingering citrus with a subtle incense tail, characteristic of classic Haze ancestry.
This cultivar shines in convection vaporizers where terpinolene and limonene remain lively; flavor retention is strong through multiple draws. In joints, the smoke is smooth when flushed and cured well, with low harshness and minimal throat scratch at moderate temperatures. Consumers sensitive to peppery finishes may prefer lower temp vapes to emphasize the candy-citrus facets.
As concentrates, live resin and hydrocarbon extracts often accentuate lemon-candy and floral notes, while rosin captures an herbaceous-lime brightness. The terp profile holds up in cartridges when cut minimally and formulated around 4–7% total terpenes by weight. Overall, the flavor experience is vivid, clean, and true to the Haze family’s citrus-floral signature.
Cannabinoid Profile and Potency
Super Silver Haze is frequently reported as higher-than-average THC, with seed vendors listing typical potency around 17% and real-world cuts routinely eclipsing 20%. Green Crack commonly tests in the 16–22% THC band, with minimal CBD. Blending these parents, Green Crack x Super Silver Haze usually lands in the 18–24% THC range in dialed-in indoor runs, with select phenotypes reaching 25%+ under high-intensity LED and CO2.
CBD is generally trace (≤0.5%), keeping the experience firmly THC-centric. Minor cannabinoids like CBG often appear in the 0.3–1.0% range, and THCV can show up in some Haze-leaning phenotypes at 0.2–0.7%. The presence of THCV in small amounts may contribute to the focused, appetite-neutral to mildly suppressant feel some users report.
Potency expression is sensitive to environmental optimization. Under 800–1000 µmol/m²/s PPFD in flower, 30–45 mol/m²/day DLI, and a stable late-flower VPD of 1.2–1.5 kPa, resin and THC expression are typically maximized. When grown outdoors with full sun and warm days, potency remains strong but can trail top-tier indoor by 1–3 percentage points.
For medical users sensitive to high THC, starting doses around 2.5–5 mg are recommended, titrating slowly upward. Recreational consumers often find a single 0.25–0.5 g joint sufficient for sustained alertness and mood lift. As always, individual tolerance, set, and setting significantly influence perceived potency and duration.
Terpene Profile and Chemistry
Haze-family analyses emphasize sweet citrus and floral terpenes, with terpinolene frequently leading the profile—it’s a hallmark of energizing, creative sativas. In Green Crack x Super Silver Haze, terpinolene commonly appears alongside limonene, beta-caryophyllene, myrcene, ocimene, and humulene. Total terpene content often ranges 1.5–3.0% by dry weight when grown under optimized conditions.
Typical relative proportions observed in similar crosses include terpinolene at 0.4–1.0%, limonene at 0.3–0.7%, beta-caryophyllene at 0.2–0.5%, and myrcene at 0.2–0.6%. Ocimene and humulene may each contribute 0.1–0.3%, adding minty-cool and woody-herbal tones. Linalool sometimes appears at 0.05–0.2%, softly reinforcing the floral top note.
Terpinolene and limonene are strongly associated with bright, energized affect, while caryophyllene can provide mild grounding through CB2 interaction. Myrcene, present here in moderate doses, seems insufficient to tip the profile sedative, which helps preserve a clear daytime effect. This balance is why many users report a linear, functional ride without the heavy drift common to myrcene-dominant cultivars.
Growers can modulate terpene expression: keeping day temps 24–27°C and night temps no more than 6–8°C cooler helps preserve volatility. A 10–14 day slow dry at ~60% RH and ~18°C (“60/60”) retains monoterpenes and avoids grassy chlorophyll notes. Proper curing at 62% RH for 3–6 weeks rounds off sharp citrus into sweet lemon candy while maintaining floral sheen.
Experiential Effects and Use Cases
Leafly characterizes Super Silver Haze as mostly energizing, and Green Crack is regularly cited as an archetypal energizing strain for the “Energized” high category. This cross predictably inherits that profile: fast-onset uplift within minutes, a rising sense of clarity, and a clean line of focus that can last 2–3 hours. Many users describe it as a “get-things-done” sativa with a mood lift that doesn’t fragment attention.
The headspace is bright and creative without racing thoughts when dosing is moderate. Music, brainstorming, and outdoor activities pair well, and social conversation often feels quick and animated. Unlike caffeine, reports suggest the energy is smooth and less jittery, consistent with Green Crack’s reputation for clean stimulation.
At higher doses, Haze phenotypes can become racy for sensitive users, so titration is key. A common approach is a single 1–3 second vape draw or a few small joint puffs to establish the baseline, then layer carefully. Hydration helps mitigate cottonmouth, and light snacks can smooth out the last 30 minutes if the energy edge runs sharp.
Side effects are typical for sativas: dry mouth and eyes, occasionally elevated heart rate, and anxiety in predisposed individuals at high doses. For most, staying at low-to-moderate intake yields a steady, productive plateau. The comedown is gentle with minimal lethargy, leaving a neutral to slightly upbeat afterglow.
Potential Medical Applications and Patient Feedback
Anecdotally, patients reach for this cultivar for low mood, daytime fatigue, and task initiation challenges. Reports frequently highlight improved motivation and task follow-through, echoing Green Crack’s reputation for sharpening focus and reducing fogginess. For individuals who respond well to energizing profiles, it can be a useful tool when sedation is counterproductive.
Some patients with attention-related concerns describe short, targeted sessions as helpful for “starting” tasks, then sustaining momentum for 60–120 minutes. Limonene’s association with elevated mood, combined with terpinolene’s cognitive lift, may explain these experiences, although individual responses vary. The cultivar’s low CBD means it’s not ideal for those seeking anxiolysis from cannabidiol.
Mild tension headaches and social stress may respond to small, carefully titrated doses, especially in phenotypes with a hint more caryophyllene and humulene. However, those with anxiety sensitivity should approach cautiously and avoid high-intensity settings on first trials. As always, medical use should be discussed with a qualified clinician, and local regulations should be observed.
From a functional medicine perspective, the lack of heavy myrcene dominance reduces the likelihood of sedation, aligning with daytime use cases. Users seeking sleep support are better served by alternative chemotypes with higher myrcene or linalool. For appetite effects, responses vary; some report neutrality or mild suppression, which may aid focus for some but isn’t suited for appetite stimulation goals.
Comprehensive Cultivation Guide
Growth habit and vigor: Expect a sativa-forward plant with fast vegetative growth and a pronounced early-flower stretch (1.6–2.0x). Internodal spacing is moderate, tightening under blue-heavy spectra or close node management. A ScrOG or two-tier trellis is recommended to maximize horizontal canopy and keep colas evenly lit.
Flowering time: 9–10 weeks indoors is typical, reflecting a compromise between Green Crack’s speed and SSH’s classic Haze arc. Outdoor harvest in the Northern Hemisphere generally falls mid to late October in warm climates. In cooler regions, consider light dep to avoid late-season moisture risks.
Yields: Indoors, optimized yields of 500–650 g/m² are achievable with strong canopy management and 800–1000 µmol/m²/s in flower. Outdoors, 700–1200 g per plant is feasible in large containers (50–100 L) or in-ground beds with full sun and good soil biology. Extractions benefit from high resin density, translating to competitive return rates for rosin and hydrocarbon.
Lighting and DLI: Aim for 35–45 mol/m²/day DLI in flower and 20–30 mol/m²/day in veg. PPFD targets of 700–900 µmol/m²/s in weeks 1–4 of flower and 900–1000+ in weeks 5–9 under supplemental CO2 (800–1200 ppm) drive yield without overshooting. Avoid excessive red-heavy spectra early in stretch to control internode elongation.
Environment and VPD: Maintain VPD at 0.8–1.1 kPa in late veg and 1.2–1.5 kPa in flower. Day temps of 24–28°C and night temps 18–22°C keep enzymatic activity and terpene retention in balance. RH should progress from 60–70% in veg to 50–55% in early flower and 40–45% late flower to deter botrytis.
Nutrition and EC: In coco/hydro, target EC 1.2–1.4 in veg, rising to 1.6–1.8 in peak bloom, then taper the final 10–14 days. In soil, use living-soil or amended super soil with light top-dressing of P/K boosters around week 3–5 of flower. Haze-leaning plants can be magnesium hungry; monitor for interveinal chlorosis and supplement 50–100 ppm Mg if needed.
pH management: For coco/hydro, keep pH 5.8–6.2; for soil, 6.2–6.8. Occasional runoff checks help prevent salt buildup that can accentuate tip burn on sativa leaves. If using high-calcium water, adjust inputs to avoid antagonizing magnesium uptake.
Training: Topping or FIM once or twice in veg creates multiple mains for ScrOG. Low-stress training combined with selective defoliation around week 2–3 of flower improves light penetration without over-stripping. Avoid aggressive defoliation late; Haze-forward leaves support a long ripening window and terpene synthesis.
Watering: In coco, frequent irrigations to 10–20% runoff maintain root-zone stability; 2–4 irrigations per light cycle are common under high PPFD. In soil, water deeply and allow a dryback that promotes oxygenation; container weight is a better guide than a fixed schedule. Ensure vigorous root aeration with perlite or pumice, especially in large pots.
IPM and disease: Sativa leaf morphology and dense trichomes can harbor powdery mildew if airflow is poor. Use preventative sulfur (veg only), biologicals like Bacillus subtilis, and strong horizontal air movement. Spider mites and thrips are common in warm environments—scout weekly and rotate controls (e.g., predatory mites, Beauveria bassiana, and horticultural soaps as needed).
Harvest timing: For a bright, energetic effect, harvest at cloudy with 5–10% amber trichomes. For a slightly softer edge, wait for 15–20% amber. Pistil color alone is unreliable; rely on trichome heads across mid-cola sites, not just top spears.
Drying and curing: Target 10–14 days at 18–20°C and ~60% RH with gentle airflow that moves but doesn’t ruffle the flowers. After the dry, cure in airtight containers at 62% RH, burping as needed for the first 1–2 weeks. Full flavor development typically peaks at 3–6 weeks of cure, with citrus-floral notes rounding into sweet lemon and light herb.
Outdoor considerations: Plant early in regions with long summers to maximize canopy. Stake early and prune for airflow to mitigate late-season dew or fog. Mulch and living cover crops help stabilize moisture and support microbial communities that boost terpene expression.
Clones vs seeds: Seeds from the original cross (when available) show phenotype variation between Green Crack-leaning citrus-candy and SSH-leaning lemon-floral profiles. Clone selection should prioritize internode spacing, trichome density, and test jars that retain citrus after 30 days of cure. Keep mother plants under 18–20 hours of light with moderate feeding to avoid woody, slow-recovering cuts.
Phenotype Hunting and Chemotype Variability
Pheno A (Green Crack-leaning): Fastest flower at 9 weeks, candy-citrus nose, tight calyx stacking, and a laser-focused, task-oriented effect. THC typically mid-20s when dialed, with terpinolene and limonene leading and modest caryophyllene support. Buds are slightly denser with shorter spears, improving jar appeal.
Pheno B (SSH-leaning): 10-week finisher with pronounced lemon-zest and floral incense, slightly looser structure, and a longer, floatier head. This expression often shows a whisper of THCV alongside classic Haze esters. The effect is creative and expansive with a gentle ceiling, suited for music and design work.
Pheno C (balanced hybrid): 9.5-week finish, mixed citrus-tropical nose, and best yield potential under trellis with large, uniform colas. The effect balances focus and euphoria with the least anxiety risk at moderate doses. Many commercial growers favor this cut for consistent bag appeal and reliable throughput.
Across phenotypes, total terpene content trends between 1.5–3.0%, with terpinolene commonly on top. Test small batches to dial drying parameters: Green Crack-leaners benefit from an extra day on the line for candy rounding, whereas SSH-leaners retain floral sharpness with a slightly drier final moisture. Keep meticulous notes to correlate aroma, effect, and agronomic performance.
Post-Harvest: Drying, Curing, and Storage
A slow dry preserves volatile monoterpenes central to this cultivar’s citrus-floral identity. Aim for 10–14 days at ~18–20°C and ~60% RH, with air exchange that prevents stagnation without directly blowing on the flowers. Stems should snap rather than bend before jarring.
Cure at 62% RH in glass or stainless containers, opening daily for the first week to release built-up moisture and CO2, then taper burps to every 2–3 days in week two. By weeks 3–6, the profile typically transitions from sharp zest to rounded lemon candy with a gentle herb base. Keep cure temps around 16–20°C to avoid terpene volatilization.
For long-term storage, stable conditions below 16°C and 55–62% RH minimize degradation. Avoid light exposure, which accelerates THC oxidation to CBN and dulls aroma. When stored correctly, this cultivar can retain vivid citrus and floral notes for 6–9 months without significant terpene loss.
If targeting concentrate production, freeze flowers immediately post-harvest for live products. For cured resins, complete a full 4–6 week cure to deepen sweetness and encourage a more confectionary citrus top. Always label jars with harvest date, phenotype, and dry/cure parameters for quality control.
Comparisons to Parent Strains and Market Position
Compared to Green Crack, this cross is usually a touch more floral and lemon-zesty, with a longer, steadier arc. It trades a bit of Green Crack’s abrupt launch for SSH’s buoyant, creative climb, improving duration without increasing jitter. The net effect is a more polished daytime ride that suits extended work sessions.
Compared to Super Silver Haze, it tends to finish faster and stack slightly denser flowers, which helps commercial throughput. The citrus edge is sweeter and less incense-heavy, widening consumer appeal to those who prefer candy-citrus over classic churchy Haze. For extractors, the resin profile is familiar but often easier to purge into a bright, palatable concentrate.
Leafly describes SSH as higher-than-average THC and energizing, while multiple sources name Green Crack as a go-to energized experience. This positions the cross as a predictable, brandable daytime cultivar in dispensaries where effect-first shopping dominates. In lists that celebrate all-time classics, both parents appear frequently, adding provenance and consumer trust.
Seed bank notes often list SSH at around 17% THC on average, yet modern cuts often exceed that in practice under optimized LED and CO2. Consequently, producers can reliably offer batches in the 20%+ THC tier with prominent citrus-floral terps, a proven retail mover. For consumers, it occupies the sweet spot between nostalgia and modern performance, backed by a breeder—Dr. Blaze—who targeted a clear, functional high.
