Strain page · Blue Dream sativa
The tall, energetic, citrus-pine side of Blueberry × Haze, selected and stabilized. Three feminized lines — Haze Select, Pure Haze Pheno and Haze Fast — from Haze Sativa Seeds, for growers with headroom who want a daytime flower and are willing to wait for it.
Blue Dream sativa seeds grow the Haze-leaning expression of a cultivar that most breeders sell as a balanced 60/40 hybrid. Every Blue Dream pack segregates toward one parent or the other; Haze Sativa Seeds has spent seven generations selecting the plants that lean toward Super Silver Haze — longer internodes, a three-fold stretch, a 10–12 week bloom, a lemon-incense edge over the berry base, and the clear, energetic reported effect that sativa growers want — and fixing that phenotype so a pack grows it every time. The plants yield 550–750 g/m² (1.8–2.5 oz/ft²) indoors under a net, reach 3.5 m outdoors, test at 20–25% THC, and keep the resilience that makes any Blue Dream a forgiving grow. Every line is feminized to a 99.9% female rate, covered by a 12-month germination guarantee and shipped discreetly worldwide.
Blue Dream sativa feminized seeds
From $9.96 per seed
Haze Select: 3 seeds — $48 · 5 seeds — $75 · 10 seeds — $129 · 25 seeds — $265 (Pure Haze Pheno and Haze Fast)
Free seeds with every order over $75.
This page is a product and growing guide published by Haze Sativa Seeds for its sativa-selected Blue Dream lines. The button above and the offer bar lead to a commercial partner and earn this site a commission. Stretch, bloom and yield figures are from Haze Sativa Seeds’ own logged grow-outs under 2.2 m ceilings; effect descriptions are drawn from user reports and are not medical findings; not a medical product; the legal summary is not legal advice. Page last reviewed October 2026.
Blue Dream earned its reputation as a sativa-dominant strain, yet most of what is sold under the name has been bred toward the middle: shorter, faster, denser, easier to fit in a tent. That is a reasonable commercial choice and it is not what every grower wants.
The Haze-leaning phenotype that the original Santa Cruz cut was known for — the one that stretched to the ceiling, took eleven weeks, smelled of lemon and incense and produced the clear, motivating daytime flower people meant when they called Blue Dream a sativa — is still in the genetics. Haze Sativa Seeds selects for it on purpose.
The trade is explicit. A sativa-selected Blue Dream needs more height, more patience and more training than the balanced version; it rewards those with a larger harvest per plant, a more energetic reported effect and an aroma that leans toward the Haze parent’s citrus, pine and spice. It is the right seed for a grower with a 2 m-plus tent or a greenhouse, an outdoor plot with a long season, and a preference for daytime flower over evening flower. It is the wrong seed for a 1.5 m tent, a short northern summer or a grower who wants the Blueberry sweetness front and center — the comparison covers those cases.
Clear, energetic, creative reported effect with little body heaviness; the profile most users associate with a Haze.
The stretch and branching that make the plant tall also carry more bud sites: 600–750 g/m² under a net, up to 3.5 kg outdoors.
Mold resistance, nutrient tolerance and vigor are unchanged; the Haze selection shifts structure and effect, not hardiness.
Haze Sativa Seeds offers Blue Dream in three feminized photoperiod lines that sit at different points on the sativa scale. All three descend from the same Haze-leaning selection of Santa Cruz-lineage Blue Dream, all three are verified to a 99.9% female rate, and all three flower on a 12/12 trigger. The table is the single reference for every number quoted on this page.
| Parameter | Haze Select | Pure Haze Pheno | Haze Fast |
|---|---|---|---|
| Sativa / indica expression | 70/30 | 80/20 | 70/30 |
| Flowering after 12/12 | 10–11 weeks | 11–12 weeks | 8–9 weeks |
| Seed to harvest (5-week veg) | 16–17 weeks | 17–18 weeks | 14–15 weeks |
| Stretch after flip | 2.5–3× | 3–3.5× | 2–2.5× |
| Height, trained indoor | 1.5–2.0 m | 1.8–2.4 m | 1.3–1.7 m |
| Height, outdoor in ground | Up to 3.5 m | Up to 4 m | Up to 2.8 m |
| Yield indoor (SCROG) | 600–750 g/m² (2.0–2.5 oz/ft²) | 550–700 g/m² (1.8–2.3 oz/ft²) | 500–650 g/m² (1.6–2.1 oz/ft²) |
| Yield outdoor per plant | 800 g – 3.5 kg | 1 – 4 kg | 600 g – 2.5 kg |
| THC (breeder reported) | 20–25% | 21–25% | 19–23% |
| Aroma lean | Lemon, pine, berry | Incense, citrus, spice | Berry, lemon |
| Outdoor finish (N. hemisphere) | Late October | Early November | Early October |
| Best for | 2 m+ tents, SCROG, most sativa growers | Greenhouses, tall rooms, Haze purists | Sativa character in a standard tent or cool-autumn climate |
| Price, 5 seeds | $75 | $85 | $69 |
Choose Haze Select for the sativa Blue Dream most growers are looking for: a 70/30 expression that stretches two and a half to three times after the flip, flowers in 10–11 weeks, and fills a net with long, resinous colas that smell of lemon and pine over a berry base. This is Haze Sativa Seeds’ reference line, fixed in 2021 after five generations of selection, and it balances the Haze parent’s structure and effect against enough Blueberry to keep the buds dense and the bloom under eleven weeks.
Haze Select wants a tent of at least 2 m, a four- to five-week veg with two toppings, a trellis net at 40–50 cm and a second at 80 cm, and a light of 600 W or more over 1.2 × 1.2 m. Grown that way it produces 600–750 g/m² and is the highest-yielding Blue Dream the company sells. Outdoors it finishes in late October and needs a dry autumn.
Feminized · Photoperiod · 70/30 sativa · 10–11 week bloom
$75 / 5 seeds3 seeds $48 · 10 seeds $129 · 25 seeds $265 · from $10.60 per seed
Managing the stretch · Check if seeds are legal where you live
Choose Pure Haze Pheno for the furthest Blue Dream can be taken toward its Haze parent without ceasing to be Blue Dream. The line is an 80/20 expression selected from the tallest, latest, most incense-scented individuals in the Haze Select population: it stretches three to three and a half times, flowers in 11–12 weeks, carries long, slightly airier colas with heavy resin, and tests at 21–25% THC with a terpene profile that leans toward terpinolene and limonene. The reported effect is the most energetic and cerebral of the three lines.
Pure Haze Pheno is a greenhouse and tall-room plant. Indoors it needs 2.4 m or more, a flip at 30–40 cm, super-cropping in week nine and the patience to wait for week twelve; outdoors it reaches 4 m and finishes in early November, which confines it to Mediterranean, subtropical and southern-hemisphere climates. It is sold for growers who know what a Haze asks and want one with Blue Dream’s vigor and berry undertone.
Feminized · Photoperiod · 80/20 sativa · 11–12 week bloom
$85 / 5 seeds3 seeds $55 · 10 seeds $149 · 25 seeds $299 · from $11.96 per seed
Choose Haze Fast for the sativa character in a standard tent or a cooler climate. The line keeps the 70/30 expression, the lemon-berry aroma and the clear daytime effect of Haze Select, but was developed by crossing an early-finishing Blue Dream back into the Haze selection and keeping photoperiod-dependent offspring with a shorter bloom: 8–9 weeks after the flip, a two- to two-and-a-half-fold stretch, and a finished height of 1.3–1.7 m trained. Outdoors it finishes in early October, three weeks ahead of Haze Select.
Haze Fast is not an autoflower; it still waits for the light to drop, can be vegged as long as the grower wants and can be cloned. Yield is 500–650 g/m² and THC 19–23%. It is the line for a 1.8 m tent, a continental climate with a wet late October, or a grower who wants the sativa effect without an eleven-week wait.
Feminized · Photoperiod · 70/30 sativa · 8–9 week bloom
$69 / 5 seeds3 seeds $45 · 10 seeds $119 · 25 seeds $249 · from $9.96 per seed
“Sativa” and “indica” on a seed pack describe growth habit and reported effect rather than botany, and in Blue Dream they describe which parent a phenotype favors. The same cross produces three recognizable expressions; the table places Haze Sativa Seeds’ lines against the balanced phenotype most breeders sell and the Blueberry-leaning phenotype a few select for, so a grower can see what is being traded.
| Parameter | Sativa-leaning (this site) | Balanced 60/40 | Indica-leaning 55/45 |
|---|---|---|---|
| Parent favored | Super Silver Haze | Neither | Blueberry |
| Flowering after 12/12 | 8–12 weeks by line | 8–10 weeks | 7–9 weeks |
| Stretch after flip | 2–3.5× | 2–2.5× | 1.5–2× |
| Internode spacing | Long; open structure | Medium | Short; compact |
| Bud structure | Long colas, slightly airier, heavy resin | Dense, chunky | Very dense, round |
| Aroma lean | Lemon, pine, incense over berry | Berry and citrus | Sweet berry, grape, earth |
| Reported effect | Clear, energetic, cerebral; daytime | Uplifting then mellow | Relaxing, body-forward; evening |
| Minimum tent height | 1.8–2.4 m | 1.8 m | 1.5 m |
| Outdoor finish (N.) | Early October to early November | Mid-October | Late September |
| Yield per plant outdoors | Highest | High | Moderate |
Haze Sativa Seeds stocks only the first column. A grower who reads down the table and finds the compact, evening-leaning plant more appealing should look for a Blueberry-selected Blue Dream rather than fight a Haze into a short tent.
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Blue Dream is a cross of Blueberry — the indica-leaning cultivar associated with breeder DJ Short — and a Haze sativa, most often reported as Super Silver Haze, attributed to the medical cannabis community around Santa Cruz, California, in the early 2000s. Super Silver Haze was itself bred in the 1990s from Skunk #1, Northern Lights #5 and the original Haze — a long-flowering sativa line developed in Santa Cruz in the 1970s from Colombian, Mexican, Thai and South Indian landraces. That ancestry is why the Haze-leaning Blue Dream phenotype stretches, branches, takes eleven weeks and produces an energetic effect: it is expressing the equatorial sativa genetics three generations back.
Selection toward the Haze parent works by growing 40–60 plants per generation, scoring each on internode length, stretch ratio, days to finish, cola shape, terpene profile and a blind panel’s assessment of the cured flower’s character, and keeping only the plants in the top quarter on the sativa axis as parents. Over seven generations the population’s average stretch rose from 2.2× to 2.8×, average bloom from 65 to 73 days, and the proportion of plants a blind panel described as “clear and energetic” rather than “relaxing” from about half to over 90%. The Blueberry contribution was deliberately retained for bud density, mold resistance and the berry undertone; a Blue Dream selected all the way to Haze would simply be a Haze.
A sativa Blue Dream is grown like any Blue Dream in its first six weeks and like a Haze after the flip. The grower’s three jobs are to flip early enough, to build a canopy that spreads the stretch sideways, and to wait for the plant to finish on its own schedule. The schedule below is for Haze Select in a 1.2 × 1.2 × 2.2 m tent with a four-week veg; Pure Haze Pheno adds a week and needs a lower flip, Haze Fast removes two weeks of bloom. The grow-out log further down was recorded on this schedule.
| Week | Stage | Light | Temp / RH | Action |
|---|---|---|---|---|
| 0 | Germination | Dark, warm | 22–26 °C / 70–80% | Paper towel, cube or direct sow; 24–72 h to taproot |
| 1–2 | Seedling | 18/6, low intensity | 22–26 °C / 65–70% | Small pot; water at the edge; no nutrients |
| 3 | Early veg, first top | 18/6 | 24–28 °C / 60–65% | Transplant to 20–25 L; top above node 4; ¼-strength feed |
| 4 | Veg, second top, LST | 18/6 | 24–28 °C / 55–60% | Top the leaders; tie down hard; first net at 40 cm |
| 5 | Flip at 35–45 cm | Switch to 12/12 | 24–27 °C / 55% | Flip early — the stretch does the vegging; verify darkness |
| 6–9 | Stretch (3–4 weeks on a Haze) | 12/12 | 24–27 °C / 50–55% | Tuck daily; second net at 80 cm; super-crop the tallest leaders in week 8–9; silica |
| 10–14 | Bud set and fill | 12/12 | 22–26 °C / 45–50% | Moderate feed — Hazes burn more easily than indicas; fan through the canopy; carbon filter |
| 15–16 | Ripening | 12/12 | 20–24 °C / 40–45% | Flush; trichomes clear → cloudy; do not cut on the calendar |
| 16–17 | Harvest (day 70–77) | Optional 24–48 h dark | 18–21 °C / 55–60% dry room | Cut, hang-dry 12–14 days (airier colas dry faster), jar-cure 4+ weeks |
Haze-leaning Blue Dream seeds germinate like any Blue Dream: 24–72 hours at 21–27 °C by paper towel, starter cube or direct sowing, all three recognized under the Haze Sativa Seeds guarantee. Seedlings on the sativa lines tend to show their character early — longer first internodes and a taller, thinner first fortnight — which is normal and not a sign of stretching for light.
A seed that has not cracked after seven days under correct conditions is covered by the guarantee.
The stretch is the defining event of a sativa Blue Dream grow and the reason most failures happen: a plant that looked manageable at the flip reaches the light four weeks later. The chart shows Haze Sativa Seeds’ logged final heights for plants flipped at different canopy heights, with and without a net; the rule it illustrates is that final height is roughly flip height multiplied by the line’s stretch factor, and that a net flattens the result by 25–35% by forcing growth sideways.
Final height of Haze Select by flip height (cm) and training, Haze Sativa Seeds 2026 grow-out, 2.2 m tent. Green bars are netted plants; amber is the tallest, untrained result.
Four techniques, in the order the company applies them. Flip early, at 35–45 cm of canopy, and let the stretch do the vegetative work; a Haze flipped at 60 cm will outgrow most tents. Top twice in veg and tie the leaders flat so the plant enters flower wide rather than tall. Run two nets — the first at 40 cm to hold the canopy level through the stretch, the second at 80 cm to catch the colas — and tuck every day for the first three weeks of 12/12. Super-crop any leader that escapes: pinch the stem between thumb and forefinger until it softens, bend it horizontal, and let it heal into a knuckle; done in week eight or nine on a Haze this costs nothing and brings a runaway cola back under the light.
Outdoors, a sativa Blue Dream becomes a tree: Haze Select reaches 3.5 m in the ground and Pure Haze Pheno 4 m, with the yield to match. The constraint is the calendar. These lines begin flowering in mid-August in the northern hemisphere and finish between early October (Haze Fast) and early November (Pure Haze Pheno), which means they need a long, dry autumn and are at risk from rain and botrytis in any climate where October is wet. The table matches line to climate; light deprivation — a blackout tarp from 19:00 to 07:00 from early July — brings any line forward by three to four weeks for growers at the margin.
| Climate zone | Recommended line | Harvest (N. hemisphere) | Harvest (S. hemisphere) |
|---|---|---|---|
| Mediterranean / subtropical, dry autumn | Pure Haze Pheno or Haze Select | Late October to early November | Late April to early May |
| Warm temperate, mostly dry October | Haze Select | Late October | Late April |
| Continental, wet late October | Haze Fast | Early October | Early April |
| Northern / maritime, early frost | Haze Fast with light deprivation, or greenhouse | Mid-September | Mid-March |
| Tropical, 12-hour days | Any; Pure Haze Pheno thrives | Any month; plant to flower almost immediately | Any month |
Stake or cage early — a 3 m plant carrying three kilograms of colas will fall in the first autumn storm without support — and thin the lower third of the plant in late August to move air through the canopy.
Haze Select flowers in 10–11 weeks after the flip, Pure Haze Pheno in 11–12 and Haze Fast in 8–9, and the single most common mistake with a sativa is harvesting at week eight because the calendar says so. Haze-leaning plants put on a visible proportion of their final weight and most of their resin in the last two weeks, and their trichomes turn cloudy later than an indica’s. The signals are the usual ones — pistils darkening and curling inward, trichomes shifting from clear to cloudy — but the grower should expect them a fortnight later than on a balanced Blue Dream and should resist cutting until mostly cloudy with 5–10% amber.
Immature on a Haze: airy, harsh, 20–30% below final weight.
Peak for the clear, energetic sativa profile on Haze Select. The window.
Heavier, less cerebral; the Haze character fades. Rarely wanted on these lines.
The same stretch that makes a sativa Blue Dream difficult to house is what makes it the highest-yielding Blue Dream per plant: more internodes mean more bud sites, and a Haze that has been spread across a net presents far more of them to the light than a compact plant can. Haze Select under a net yields 600–750 g/m², the highest figure Haze Sativa Seeds records for any Blue Dream; an untrained plant in the same tent yields 400–500 g/m² because most of its colas sit in the shade of the topmost one. The table gives expected dry weight by line and training for four common footprints.
| Line and training | 0.5 m² | 1 m² | 1.2 × 1.2 m (1.44 m²) | 2 m² |
|---|---|---|---|---|
| Haze Select · untrained, under 400 W | 202–248 g (7.1–8.7 oz) | 405–495 g (14.3–17.5 oz) | 583–713 g (20.6–25.1 oz) | 810–990 g (28.6–34.9 oz) |
| Haze Select · topped, one net, 400–600 W | 261–319 g (9.2–11.3 oz) | 522–638 g (18.4–22.5 oz) | 752–919 g (26.5–32.4 oz) | 1,044–1,276 g (36.8–45.0 oz) |
| Haze Select · topped twice, two nets, super-cropped, 600 W+ | 315–385 g (11.1–13.6 oz) | 630–770 g (22.2–27.2 oz) | 907–1,109 g (32.0–39.1 oz) | 1,260–1,540 g (44.4–54.3 oz) |
| Pure Haze Pheno · untrained, under 400 W | 180–220 g (6.3–7.8 oz) | 360–440 g (12.7–15.5 oz) | 518–634 g (18.3–22.4 oz) | 720–880 g (25.4–31.0 oz) |
| Pure Haze Pheno · topped, one net, 400–600 W | 243–297 g (8.6–10.5 oz) | 486–594 g (17.1–21.0 oz) | 700–855 g (24.7–30.2 oz) | 972–1,188 g (34.3–41.9 oz) |
| Pure Haze Pheno · topped twice, two nets, super-cropped, 600 W+ | 292–358 g (10.3–12.6 oz) | 585–715 g (20.6–25.2 oz) | 842–1,030 g (29.7–36.3 oz) | 1,170–1,430 g (41.3–50.4 oz) |
| Haze Fast · untrained, under 400 W | 180–220 g (6.3–7.8 oz) | 360–440 g (12.7–15.5 oz) | 518–634 g (18.3–22.4 oz) | 720–880 g (25.4–31.0 oz) |
| Haze Fast · topped, one net, 400–600 W | 225–275 g (7.9–9.7 oz) | 450–550 g (15.9–19.4 oz) | 648–792 g (22.9–27.9 oz) | 900–1,100 g (31.7–38.8 oz) |
| Haze Fast · topped twice, two nets, super-cropped, 600 W+ | 266–324 g (9.4–11.4 oz) | 531–649 g (18.7–22.9 oz) | 765–935 g (27.0–33.0 oz) | 1,062–1,298 g (37.5–45.8 oz) |
Base rates per m² by training level: Haze Select 450 / 580 / 700 g, Pure Haze Pheno 400 / 540 / 650 g, Haze Fast 400 / 500 / 590 g, multiplied by area and shown as ±10%; 1 ft² = 0.0929 m², 1 oz = 28.35 g.
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Selecting toward the Haze parent shifts Blue Dream’s terpene balance as much as its structure. Myrcene remains the largest single terpene on Haze Select, but its share falls; limonene, terpinolene and alpha-pinene rise, and on Pure Haze Pheno terpinolene approaches myrcene. In Haze Sativa Seeds’ testing after a four-week cure, Haze Select carried 2.0–2.5% total terpenes, with a profile that smells of lemon, pine and incense over a berry base; Pure Haze Pheno smells of incense, citrus and pepper with the berry faint; Haze Fast sits closest to standard Blue Dream, berry and lemon in equal measure.
A clear, energetic, cerebral onset — described by most users as motivating and sociable — with little body heaviness; the profile people mean by a daytime sativa. Pure Haze Pheno is reported as the most intense and the longest-lasting; Haze Fast the most balanced. Effects vary by harvest timing, dose and individual.
Dry mouth and dry eyes; the racy, anxious or overstimulated feeling some users report from strong sativas is more common on these lines than on balanced Blue Dream, particularly Pure Haze Pheno at larger amounts. Adults should start low. Haze Sativa Seeds makes no medical claims; see the FAQ.
Growers choosing a sativa-leaning strain usually weigh Blue Dream’s Haze lines against the established sativas and Haze hybrids. The table is informational; Haze Sativa Seeds stocks only Blue Dream.
| Strain (feminized) | Sativa | Flowering | Stretch | Choose it if |
|---|---|---|---|---|
| Blue Dream Haze Select | 70% | 10–11 wk | 2.5–3× | Haze effect with Blue Dream’s density, resilience and yield |
| Super Silver Haze | 80% | 10–12 wk | 3× | The parent itself; less dense, less berry, more incense |
| Amnesia Haze | 80% | 11–13 wk | 3×+ | Stronger, racier, longer; a demanding Haze |
| Jack Herer | 55% | 8–10 wk | 2× | A spicier, more manageable sativa-leaning hybrid |
| Durban Poison | 100% | 8–9 wk | 2× | A fast pure sativa, anise-sweet, no Haze stretch |
| Sour Diesel | 70% | 10–11 wk | 2.5× | Fuel aroma instead of citrus-berry; similar structure |
A sativa-selected seed has the same status as any other cannabis seed: it contains no measurable THC and in most of North America and Europe is classified as hemp genetic material, a collectible or an agricultural product. The plant is cannabis wherever it grows and subject to local cultivation law. Two rules bear more on a sativa grower than on others. Several jurisdictions that permit home cultivation require plants to be out of public view or inside a locked enclosure — a 3.5 m Haze on an open plot is neither — and a few cap plant height or canopy area outright. Haze Sativa Seeds sells to adults aged 21 and over, ships seeds as collectible genetics, and expects buyers to confirm the rules that apply before germinating. The table is informational, not legal advice, as of October 2026.
| Region | Buying seeds | Germinating / growing | Note for tall outdoor plants |
|---|---|---|---|
| United States | Legal federally: seeds under 0.3% delta-9 THC are hemp under the 2018 Farm Bill (7 U.S.C. §1639o), confirmed by DEA correspondence of 13 January 2022 | State law governs; about half of states allow home cultivation | Most legal states require plants out of public view or in an enclosed, locked space; some cap flowering plants |
| Canada | Legal | Four plants per household under the Cannabis Act; Quebec and Manitoba prohibit home growing | Several municipalities restrict visibility from public spaces and set height limits for outdoor plants |
| United Kingdom | Legal as collectibles | Illegal without a Home Office licence | Not applicable |
| European Union | Legal in most member states as collectibles | Germany three plants per adult; Spain tolerates private cultivation out of public view; most others prohibit | Spanish tolerance depends on the plant not being visible from public space |
| Australia / New Zealand | Restricted; seeds treated as cannabis in most states | ACT only, two plants per person | ACT requires plants inaccessible to the public and not visible from public land |
| Other regions | Varies; several countries criminalize seeds | Prohibited in most | Haze Sativa Seeds does not ship where seed possession is a criminal offence |
Primary sources: Agriculture Improvement Act of 2018 (USDA); DEA letter of 13 January 2022 on cannabis seeds; Cannabis Act (Health Canada); German Cannabis Act (KCanG) 2024. Last reviewed October 2026. See the FAQ.
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Haze Sativa Seeds dispatches orders placed before 14:00 UTC on a business day the same day, in plain crush-proof packaging with no reference to seeds, cannabis or the company on the exterior or the customs form. Seeds travel in a sealed breeder pouch inside a light-blocking inner envelope.
Tracking on every parcel. Orders over $75 ship free; below that, $9 flat. Forwarding services and parcel lockers are at the buyer’s own risk and outside the delivery guarantee.
Visa and Mastercard under a neutral descriptor, bank transfer (SEPA, ACH, wire), Bitcoin and other major cryptocurrencies confirmed within the hour, and cash by registered mail.
Seeds that fail to sprout are replaced free once per order within 12 months, with the order number, a recognized method and a request within 14 days. Phenotype is fixed by selection: a plant from Haze Select or Pure Haze Pheno that finishes under 2× stretch and under 60 days, documented with dated photographs, is replaced with a full pack.
| Region | Transit time | Free shipping from |
|---|---|---|
| United States | 3–7 business days | $75 |
| Canada | 5–10 business days | $75 |
| United Kingdom and EU | 7–14 business days | $75 |
| Rest of world (where permitted) | 10–21 business days | $75 |
Seeds should be stored sealed, in a cool, dark, dry place — a refrigerator at 4–8 °C is ideal — and hold their germination rate for two to three years.
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Haze Sativa Seeds publishes every verified-buyer review, including those below four stars, and gives three free seeds for any report with dated photographs of flip height and final height. The entries below are from the 2026 season; across verified buyers Haze Select carries an aggregate rating of 4.8 out of 5 from 171 reviews.
“2.9× stretch, two nets, 712 g from 1.44 m². Flipped at 42 cm per the page, nets at 40 and 80, super-cropped three leaders in week nine. Finished day 74 at 1.55 m. Lemon-pine with berry underneath after five weeks in jars. The effect is exactly the clear daytime thing I remember from old Blue Dream.”★★★★★ Nils E. · Verified purchase · September 2026 · Haze Select, indoor
“Pure Haze Pheno is a four-meter plant and twelve weeks — believe it. Andalusia, in the ground from April. Staked in July, caged in September, harvested 6 November at 3.9 m. 3.4 kg dry from the best of three. Incense and citrus, berry only after cure. One star off because one plant foxtailed in a heat wave.”★★★★☆ Inés C. · Verified purchase · November 2026 · Pure Haze Pheno, outdoor
“Haze Fast gave me the sativa in a 1.8 m tent. Couldn’t run the Select in my tent. Fast flipped at 45 cm, finished at 1.4 m on day 61, 560 g. Still clearly a Haze in effect, a bit more berry in the taste. Will run it again.”★★★★★ Tom R. · Verified purchase · August 2026 · Haze Fast, indoor
“My fault: flipped at 65 cm with no net. Hit the light at week nine and had to bend everything sideways in a panic. Lost two colas to burn. Still got 480 g and the flower is excellent, but the warning on this page is there for a reason. Support talked me through super-cropping on the phone.”★★★☆☆ Grace L. · Verified purchase · July 2026 · Haze Select, indoor
| Week | Date | Stage | Canopy height | Observation |
|---|---|---|---|---|
| 2 | 10 Jan 2026 | Seedling | 11 cm | 30/30 germinated; long first internodes typical of the line |
| 4 | 24 Jan 2026 | Second top, LST, first net | 38 cm | Eight to twelve leaders tied flat |
| 5 | 31 Jan 2026 | Flip to 12/12 | 42 cm | Darkness verified; second net ready |
| 9 | 28 Feb 2026 | End of stretch | 118 cm | 2.8× stretch; six leaders super-cropped; lemon-pine aroma |
| 16 | 17 Apr 2026 | Harvest, day 75 of bloom | 152 cm | 30/30 female; cloudy with 7% amber; 2,980 g dry from 4.3 m² (693 g/m²) |
Haze Sativa Seeds is a seed bank and breeding operation founded in 2014 by two growers who had spent the previous fifteen years working with Haze lines in the Netherlands and California and wanted to preserve the sativa expression of popular hybrids that the market was steadily breeding toward the middle. The company maintains its own selected populations, scores every generation on structure, bloom length and a blind panel’s assessment of the cured flower, and publishes only stretch, bloom and yield figures from its own logged grow-outs. The Blue Dream program began in 2015; Haze Select was fixed in 2021, Pure Haze Pheno released in 2023 and Haze Fast in 2025. Feminized stock is produced by silver-thiosulfate reversal and verified by batch grow-out, and every seed lot is laboratory tested to confirm delta-9 THC below 0.3% for shipment as hemp genetics.
Contact: [email protected].
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The answers below use the figures in the line table; legal and health answers carry the same disclaimers as the sections above.
Blue Dream is sativa-dominant by lineage, but most seed on the market has been selected toward the balanced 60/40 middle for shorter, faster plants. Haze Sativa Seeds selects the other way, toward the Super Silver Haze parent, for a 70–80% sativa expression with longer bloom, greater stretch and a clearer, more energetic reported effect. See why select toward the sativa side.
Haze Select for most sativa growers with a 2 m tent and a net. Pure Haze Pheno for greenhouses, tall rooms and Haze purists willing to wait twelve weeks. Haze Fast for a standard 1.8 m tent, a cooler climate or a grower who wants the sativa effect in nine weeks. The line table compares every number.
Breeder-reported THC is 20–25% for Haze Select, 21–25% for Pure Haze Pheno and 19–23% for Haze Fast, from tested flower in the company’s grow-outs. Potency depends on light intensity, harvest timing and curing.
Dry mouth and dry eyes; the racy, anxious or overstimulated feeling some users report from strong sativas is more common on these lines than on balanced Blue Dream, especially Pure Haze Pheno at larger amounts. Adults should start low. Blue Dream is not a medical product and Haze Sativa Seeds makes no therapeutic claims; consult a physician about any health concern.
Trained indoors, Haze Select finishes at 1.5–2.0 m, Pure Haze Pheno at 1.8–2.4 m and Haze Fast at 1.3–1.7 m; final height is roughly flip height multiplied by the stretch factor (2–3.5×), minus 25–35% for a net. Outdoors in the ground: up to 3.5 m, 4 m and 2.8 m respectively. See managing the stretch.
Haze Select 10–11 weeks after 12/12, Pure Haze Pheno 11–12 weeks, Haze Fast 8–9 weeks, plus the veg length the grower chooses. Haze-leaning plants gain much of their final weight in the last fortnight, so harvest on trichomes, not on week eight. See flowering time.
2 m of usable height for Haze Select, 2.4 m for Pure Haze Pheno, 1.8 m for Haze Fast, assuming a flip at 35–45 cm and a net. In a lower tent, flip at 30 cm, run two nets and choose Haze Fast.
Early — at 35–45 cm of canopy for a 2 m tent — because the three- to four-week stretch after the flip does the vegetative work a balanced plant would need extra veg weeks for. A Haze flipped at 60 cm or more will outgrow most tents without a net.
Under a net and 600 W or more: Haze Select 600–750 g/m², Pure Haze Pheno 550–700 g/m², Haze Fast 500–650 g/m²; untrained, 400–500 g/m². Outdoors a single plant yields 600 g to 4 kg by line and season. Use the yield table.
Haze Fast, which finishes in early October, suits a continental climate with a wet late October; with light deprivation from early July it finishes in mid-September and suits northern latitudes. Haze Select and Pure Haze Pheno need a long, dry autumn — Mediterranean, subtropical or southern-hemisphere. See outdoor height and climate.
Not in resilience — mold resistance, nutrient tolerance and vigor are unchanged — but it demands more planning: an early flip, two nets, super-cropping and patience. Hazes also burn more easily under heavy feeding than indicas, so feed moderately in bloom.
Paper towel at 21–27 °C in the dark, planting root-down 5–10 mm deep at a 5–10 mm taproot; or a starter cube; or direct sowing in a 1 L pot. All three are covered by the guarantee. Steps under germination.
Yes; all three are photoperiod feminized lines that clone readily, rooting in 7–12 days. Take a cutting of each plant at week two of bloom, keep them under 18/6, and keep the cutting of the best plant. Refresh the mother from seed every two to three years.
Sealed in the original pouch, inside an airtight container, in a cool, dark, dry place — ideally a refrigerator at 4–8 °C. Avoid freezing and temperature swings. Germination rate holds for two to three years.
Buying is legal in the US, Canada, the UK and most of the EU because a seed contains under 0.3% THC. Growing is governed by local cultivation law, and most jurisdictions that permit home growing require plants out of public view or in a locked enclosure; some cap height or canopy. Buyers must be 21 or older. See the regional table.
Haze Select costs $16 per seed in a pack of three, $15 in five, $12.90 in ten and $10.60 in 25. Pure Haze Pheno costs $18.33, $17, $14.90 and $11.96. Haze Fast costs $15, $13.80, $11.90 and $9.96. Free seeds are added to every order over $75.
Haze Sativa Seeds ships to every country where seed possession is lawful, same day for orders before 14:00 UTC, in plain packaging with no reference to the contents. Transit is 3–7 business days to the US, 5–10 to Canada, 7–14 to the UK and EU and 10–21 elsewhere. Orders over $75 ship free. See shipping.
Germination: seeds that fail to sprout are replaced free once per order within 12 months with the order number, a recognized method and a request within 14 days. Phenotype: a Haze Select or Pure Haze Pheno plant that finishes under 2× stretch and under 60 days, documented with dated photographs, is replaced with a full pack.
Visa, Mastercard, bank transfer (SEPA, ACH, wire), Bitcoin and other major cryptocurrencies, and cash by registered mail. Card statements show a neutral descriptor.
No. Haze Sativa Seeds stocks sativa-selected Blue Dream only: Haze Select, Pure Haze Pheno and Haze Fast. Balanced, Blueberry-leaning, autoflower and regular Blue Dream lines are sold through separate dedicated catalogs.
Sources: Haze Sativa Seeds 2026 grow-out log and selection records; Agriculture Improvement Act of 2018 (USDA); DEA letter of 13 January 2022 on cannabis seeds; Cannabis Act (Health Canada); German Cannabis Act (KCanG) 2024; page last reviewed October 2026.
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Post-Harvest Manager, Haze Sativa Seeds
Kevin Sullivan runs post-harvest operations at Haze Sativa Seeds, which places him at the end of every grow cycle this page describes — drying, curing, seed handling and storage. For this guide he compiled the stretch, bloom and yield figures from the company’s 2026 Haze Select grow-out and reviewed the flip-height, netting and harvest guidance against the store’s own sativa grows.
He reviews the agronomic values published here against catalogue records and submitted grower reports before each revision. Cannabinoid figures are reproduced as the breeder reports them; the legal summary was compiled from the operative rules in each jurisdiction named and carries the date it was last checked.