How to Grow Blue Haze
Blue haze is what growers call the meeting of two dynasties, and the version in this guide spells it out: Amnesia Haze crossed with Blueberry, sold as Blue Haze at Blimburn Seeds. Amsterdam’s most decorated haze lends the engine, and DJ Short’s classic, still available as Blueberry, lends the color and the fruit.
The result is a 70% sativa testing at 20-23% THC with a profile built for daylight hours: energetic, euphoric and focused, flower that sharpens a morning instead of melting an evening. The flavor runs deeper than the name suggests, ripe berry over an earthy, herbal base with a pungent, faintly cheesy edge that announces quality from across the room.
Recommended Strains
Blue Haze
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THC | 20% - 23% (Medium) |
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Type | Feminized |
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Yield | High |
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Phenotype | 30% Indica / 70% Sativa |
Amnesia Haze Auto
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THC | 16% - 17% (Medium) |
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Type | Autoflowering |
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Yield | Medium |
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Phenotype | 25% Indica / 75% Sativa |
One strategic note before germination: this plant produces its best indoors, where 450-600 g/m² is realistic, while outdoor plants stay modest at 100-120 grams. Plan a tent grow, enjoy the blue-tinged colas under your own lights, and the strain delivers everything its name promises. Here is the program.
Blue Haze at a Glance
The datasheet in one view.
| Type | Feminized (photoperiod) |
| Lineage | Amnesia Haze x Blueberry |
| Phenotype | 30% Indica / 70% Sativa |
| THC | 20% – 23% (medium) |
| Climate | Temperate |
| Height | Up to 4.92 ft (1.5 m) |
| Flowering time | 8 – 10 weeks after the flip |
| Harvest month | October |
| Yield indoor | 1.47 – 1.97 oz/ft² (450 – 600 g/m²) |
| Yield outdoor | 3.53 – 4.23 oz/plant (100 – 120 g/plant) |
| Effects | Energetic, euphoric, focused |
| Flavors | Berry, cheese, earthy, herbal, pungent |
A 70% sativa that stays at 4.92 ft and flowers in a standard 8-10 weeks is the haze experience with the haze problems bred out. The indoor yield range rewards good training generously, and the famous blue shading arrives on its own when late-bloom nights run cool.
Promos & Deals
Getting Blue Haze Started
Germinate at 70-79°F in paper towels or starter plugs; taproots show within three days. Pot up in stages to a 3-5 gallon final container. Every feminized seed flowers female, and the official beginner rating is earned: the seedlings handle wobbly early care with patience.
Veg under 18 hours of light at 68-81°F and 50-60% humidity for three weeks or so. The sativa share shows in quick, upright growth with slimmer leaflets than the Blueberry side would suggest, and the plant responds to topping with enthusiastic branching, exactly what the indoor canopy needs.
Feeding Blue Haze by EC
Haze crosses prefer measured feeding over muscle. Track EC, hold pH at 6.0-6.5 in soil, and build up only as fast as the plant confirms.
| Stage | Weeks | EC | Notes |
|---|---|---|---|
| Seedling | 1-2 | 0.4 – 0.6 | Plain water or very light feed |
| Vegetative | 3-4 | 0.8 – 1.2 | Nitrogen-leaning base nutrients |
| Preflower | Flip + 1-2 | 1.2 – 1.4 | Transition feed through the stretch |
| Bloom | Flip + 3-8 | 1.4 – 1.6 | Bloom base, add PK booster |
| Flush | Final 1-2 | 0.0 – 0.4 | Plain pH-corrected water |
Hold nitrogen steady through the stretch, then shift the balance to phosphorus and potassium as the long sativa colas begin stacking. Watch magnesium under LED lights; pale striping between the veins is this cross’s first complaint, and it corrects within a week.
Flush thoroughly at the end. The berry note is the Blueberry gift in this cross, and it survives only when the plant finishes clean.
Training Blue Haze and Flipping to 12/12
Top once above the fourth node in week 2 or 3, then spread the mains with low-stress training into a wide, even canopy. On a plant whose yield range spans 450 to 600 grams, training is the difference between the bottom and the top of that range; every levelled branch becomes a running cola.
Flip to 12/12 at about 60% footprint coverage, leaving room for an energetic but manageable stretch. Flowering runs 8-10 weeks with slender, stacking buds in the haze tradition, denser than their ancestors thanks to the Blueberry side. Keep humidity at 40-45% from mid-bloom with steady airflow, and let cool nights in the final weeks pull out the blue tones the strain is named for.
Harvesting and Curing Blue Haze
Start reading trichomes at week 7 of flower. Harvest at mostly cloudy with the first ambers to preserve the energetic, focused character; this is daytime flower, and deep amber only blunts its purpose. Outdoor plants in temperate climates finish in October, though the modest outdoor numbers make the tent the better stage.
Dry for 10-14 days at 59-68°F and around 55% humidity, then cure in glass for at least two weeks with daily burping at the start. The herbal haze brightness leads the young jar, the berry arrives by week two, and the pungent, cheesy depth settles in last, giving the mature jar its full, layered signature.
What to Do With Your Trim
Haze resin over Blueberry terpenes makes aromatic processing material. Dry-sift for a bright, herbal kief, wash bubble hash for concentrates with a berry undertone, or infuse butter where the fruit side carries through. The energetic character survives into every format, so dose daytime edibles accordingly.
Aroma, Flavor and Terpenes
Five terpenes shape a five-flavor profile. Terpinolene leads with the bright, sparkling herbal note that defines the haze family, while myrcene lays down the ripe berry depth inherited from Blueberry. Caryophyllene adds the peppery warmth that reads as the pungent, cheesy edge in the cured flower.
Linalool rounds the middle with soft floral sweetness, and p-Cymene, the dry aromatic rarity, gives the exhale its aged, earthy finish. Together they produce a jar that evolves for weeks: herbal first, fruity second, pungent and deep at full maturity, a profile with far more movement than most modern single-note hybrids.
Common Problems and Pro Tips
Blue Haze is a rewarding grow, but it is a 70% sativa with a pungent aroma that performs best indoors, so plan for the stretch, the smell and the space.
- Manage the stretch: as a 70% sativa it grows upright with slender stacking colas, so train the tops and give it headroom to keep the canopy even and well lit.
- Grow it indoors for the yield: it is a strong producer indoors but light per plant outdoors, so a tent or greenhouse gets far more out of this one.
- Plan for the smell: its berry-over-cheese aroma carries a pungent edge in flower, so run a carbon filter if you need to keep the grow discreet.
Expert tip: it stays tent-friendly at 1.5 m and keeps a clear, daytime character. Its ripe berry over an earthy, herbal base arrives in layers through a two to three week cure, so dry slowly and be patient.
Frequently Asked Questions
What is the Blue Haze strain?
Blue Haze is a feminized 70% sativa from Blimburn Seeds crossing Amnesia Haze with Blueberry. It combines 20 to 23% THC with an energetic, focused effect, a berry-herbal flavor profile and the blue-tinged flower that gives the strain its name, so it is a bright, daytime-leaning hybrid.
What is the difference between Blue Haze and Blue Dream?
Both descend from Blueberry, but through different haze partners: Blue Dream is the classic Blueberry x Haze cross, while this Blue Haze pairs Blueberry with Amnesia Haze, giving it a brighter, more herbal character and a firmly daytime lean. So they share a parent but read quite differently.
Is Blue Haze an indica or a sativa?
It is 70% sativa and 30% indica, and it behaves like it: upright growth, slender stacking colas and an energetic, euphoric, focused effect. The indica share keeps the height at a tent-friendly 4.92 ft, but you should still train the tops to keep the canopy even and the lower buds well lit.
How strong is Blue Haze?
Flowers test at 20 to 23% THC, a solid medium that delivers genuine haze energy without veteran-only intensity. Combined with the clear-headed character, it stays easy to steer through a working day, so it is an approachable, functional sativa rather than an overwhelming one for most people.
How much does Blue Haze yield?
Indoors, a trained canopy delivers 1.47 to 1.97 oz/ft² (450 to 600 g/m²). Outdoors it stays modest at 3.53 to 4.23 oz (100 to 120 g) per plant, so grow rooms are clearly where this strain earns its keep, where you can control the light and the canopy to build that bigger yield.
What does Blue Haze taste like?
Ripe berry over an earthy, herbal base with a pungent, faintly cheesy edge, brighter than Blueberry, deeper than a typical haze. The layers arrive in sequence through a two to three week cure, so dry slowly in a cool, dark space and give it that time before you judge the flavour.
