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Strain facts

Checked Oct 21, 2026 · 5 sources

Green Haze is a sativa from A.C.E. Seeds, bred from Haze. Its THC is about 20% (sources say 16–24%), milder than 54% of the 2,347 strains in our database that list THC. It flowers in about 18 weeks (one source lists 16–20 weeks).

Type
Sativa
THC
About 20%16–24% across 2 sources
Top terpenes
  1. Myrcene earthy, musky
  2. Caryophyllene peppery, spicy
  3. Pinene pine
Commonly reported effects
Talkative, focused, creative, uplifted and energetic
Flavors
Woody and diesel
Lineage
Haze
Breeder
A.C.E. Seeds
Flowering
About 18 weeks16–20 weeks · 1 source
5 sources for this profile
  1. Leafly public strain listing
  2. Weedmaps public strain listing
  3. Breeder information: A.C.E. Seeds

Grow facts

  1. SeedFinder (breeder listing: A.C.E. Seeds) Flowering and grow setting
  2. AllBud (strain database) THC

Grow facts come from the breeder first, then seed banks and strain databases. With 2 sources we show the range and the middle; with 3 or more, the range and the median, after leaving out values far from the rest. The breeder's own value is the anchor, unless it is far from every other source (outside their range and more than 20% from their median); then we show the full range and the median of all of them. A fact from a single source is marked "1 source", and a fact no source lists is left out. Yields are converted to one unit: indoor per square meter, outdoor per plant.

CTU writes every profile from these facts; we do not copy other sites' descriptions. Values that are a generic default in the source data are left out. Last checked Oct 21, 2026.

Source: CTU strain dataset (public strain listings and breeder info, checked by CTU), verified Oct 2026. Potency, flavor and effects vary by grower, batch and plant. Facts no source lists are left out.

How to grow Green Haze

The grow facts a breeder or public strain listing gives for Green Haze.

Flowering time
About 18 weeks16–20 weeks · 1 source. Slower than 100% of strains with a listed time
Grow setting
Indoor and outdoor1 source

Flowering window (weeks after the switch to 12/12)

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Sources: the breeder, seed banks and strain databases listed under sources, checked Oct 2026. Percentages compare with every strain in our database that lists the same fact.

Learn to grow Green Haze: Indoor & Outdoor Growing course, $199

About Green Haze

Green Haze is listed in public strain databases as a sativa attributed to A.C.E. Seeds. Its listed lineage is Haze.

How strong is Green Haze?

Reported THC for Green Haze is 16%. That puts it on the milder end: its midpoint is higher than about 12% of all strains in our research dataset with a strain-specific THC figure. Potency varies by grower, batch and lab, so read these numbers as typical values, not guarantees.

What does Green Haze smell and taste like?

People most often describe the flavor of Green Haze as woody and diesel. Its top listed terpenes are myrcene (earthy, musky), caryophyllene (peppery, spicy) and pinene (pine). Myrcene is the lead terpene for about 44% of the high-confidence strains in our dataset, so it is a common profile. Terpenes shape smell and taste; their levels change from batch to batch.

Reported effects of Green Haze

People who have tried Green Haze most often report feeling talkative, focused, creative, uplifted and energetic. These are user reports, not promises. Effects differ from person to person and depend on dose, setting and tolerance.

Green Haze family tree

Its parents, from published lineage.

Parents

This strain

Green HazeSativa · 16–24% THC · 16–20 wk

Similar strains

Matched on shared parents, top terpenes, type and THC. Never on medical use.

Sativa

Atomical Haze

aka Atomical

THC
18–21%
Flowering
9–10 wk
Terpene
Caryophyllene
Effect
Energetic
Difficulty
Beginner
Height
Very tall
Save
Indica

Banana Candy

THC
17–24%
Flowering
8–9 wk
Terpene
Limonene
Effect
Focused
Difficulty
Intermediate
Save

Sativa strainsMyrcene strainsWoody strainsStrains bred from Haze

Where to buy

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Grow it

How to grow Green Haze

Flowering time, height and difficulty from the sources, then the full method in the Growing course.

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