What is the main difference between Blue Haze and Vietnamese Black?

Blue Haze is a Sativa strain (25% Indica / 75% Sativa) with THC levels of 21–23%, while Vietnamese Black is a Sativa strain (0% Indica / 100% Sativa) with THC levels of 24–25%.

Which strain has higher THC — Blue Haze or Vietnamese Black?

Vietnamese Black has higher THC at 24–25%, compared to Blue Haze at 21–23%.

Is Blue Haze or Vietnamese Black easier to grow?

Blue Haze has moderate growing difficulty with a 9-week flowering period, while Vietnamese Black has moderate difficulty with a 10-12-week flowering period.

What effects does Blue Haze have compared to Vietnamese Black?

Blue Haze produces uplifting, happy, focused, creative, euphoric effects, ideal for morning use. Vietnamese Black produces euphoric, focus, uplifting effects, best for morning use.

What terpenes are in Blue Haze and Vietnamese Black?

Blue Haze features Myrcene, giving it berry, blueberry, fruit flavors. Vietnamese Black features Terpinolene, Pinene, Limonene, with citrus, herb, spicy flavors.

Which medical conditions can Blue Haze and Vietnamese Black help with?

Blue Haze may help with anxiety, chronic pain, depression, stress, pain. Vietnamese Black may help with arthritis, depression, fatigue, migraines, stress, pain. Consult a healthcare professional before using cannabis for medical purposes.

Strain Encyclopedia

Blue Haze

Sativa — THC 23%

Vietnamese Black

Sativa — THC 25%

Potency, effects, terpenes, flavors, growing difficulty, and medical uses — compared side by side.

Home/Strain Comparisons/Blue Haze vs Vietnamese Black

Quick Verdict

Who wins in each category?

⚡

Potency

Vietnamese Black

🏥

Medical

Blue Haze

🌱

Growing

Tie

🍋

Flavor

Vietnamese Black

Strain Profile Comparison

Six-axis profile overlay — see where each strain excels

Blue Haze

Vietnamese Black

Effect Matchup

Side-by-side effect intensity — bars show relative prominence

Blue Haze

Effect

Vietnamese Black

100%

Uplifting

77%

60%

Euphoric

100%

88%

Happy

77%

Focused

68%

Creative

53%

Relaxing

Focus

88%

2 shared effects highlighted

Blue Haze — Potency

THC0%

CBD0%

Potency LevelStrong

Vietnamese Black — Potency

THC0%

CBD0%

Potency LevelStrong

Blueberry x HazeBlue Haze

Indica 25%Sativa 75%

Vietnamese LandraceVietnamese Black

Indica 0%Sativa 100%

Side-by-Side Specs

Green highlight indicates the superior value

Blue Haze

Profile Comparison

Shared (2)

UpliftingEuphoric

Only Blue Haze (4)

HappyFocusedCreativeRelaxing

Only Vietnamese Black (1)

Focus

Possible Side Effects

Shared

Dry eyesDry mouth

Only Blue Haze

Paranoid

Only Vietnamese Black

Dizzy

Growing Guide Comparison

Blue Haze

DifficultyModerate

Flowering9 weeks

HarvestEnd of October

Indoor Yield350g/m² (1.1oz/ft²)

Outdoor YieldMedium

Indoor Height150cm (59in)

Outdoor HeightMedium

Plant StructureTall

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

ClimateMediterranean, Warm

Vietnamese Black

DifficultyModerate

Flowering10-12 weeks

HarvestLate October

Indoor YieldMedium

Outdoor YieldMedium to High

Indoor HeightTall

Outdoor HeightTall

Plant StructureTall and Stretchy

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

ClimateWarm, Mediterranean

About These Strains

Blue Haze

Sativa 25/75 — THC 21–23% — CBD 2–2%

Blue Haze is an indica dominant hybrid strain (80% indica/20% sativa) created through crossing the classic Blueberry X Haze strains. Named for its celebrity parentage and gorgeous appearance, Blue Haze is perfect for any indica lover.

This bud has super dense and oversized spade-shaped minty green nugs with vibrant blue undertones, thin bright red-orange hairs and a coating of frosty, blue-tinted white crystal trichomes.

Vietnamese Black

Sativa 0/100 — THC 24–25%

Vietnamese Black is a rare 100% pure sativa strain that is native to regions of Vietnam. If you’re looking for a classic sativa to help get you up and going for a busy day ahead without the paranoia or anxiety that can sometimes come with it, Vietnamese Black is it.

This bud has a deeply relaxing and lifted high that is perfect for a wake-and-bake when you need a little lift without all the drama.

Which One Is Right for You?

Blue Haze and Vietnamese Black are both excellent strains with distinct characteristics. Blue Haze is a Sativa with 21–23% THC, while Vietnamese Black is a Sativa with 24–25% THC. Your choice depends on your preference for effects, growing difficulty, and intended use.

Choose Blue Haze

Choose Blue Haze if you want higher CBD for medical use. Blue Haze is an indica dominant hybrid strain (80% indica/20% sativa) created through crossing the classic Blueberry X Haze strains.

Choose Vietnamese Black

Choose Vietnamese Black if you want higher THC potency. Vietnamese Black is a rare 100% pure sativa strain that is native to regions of Vietnam.

Frequently Asked Questions

Common questions about Blue Haze vs Vietnamese Black

Medical Disclaimer

The information on this page is for educational purposes only and is not intended as medical advice. Cannabis affects everyone differently. Consult a qualified healthcare professional before using cannabis for any medical condition. Effects, potency, and medical benefits may vary. Do not use cannabis if pregnant, nursing, or under the legal age in your jurisdiction.

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