Auto White Widow
- THC
- 16–19%
- Seed to harvest
- 9–10 wk
- Terpene
- Myrcene
- Effect
- Euphoric
- Difficulty
- Beginner
Red Haze strain
Neville's Haze × South American
Strain facts
Checked Oct 21, 2026 · 3 sources
Red Haze is a sativa, bred from Neville's Haze and South American. Its THC is about 23% (sources say 20–25%), higher than 68% of the 2,347 strains in our database that list THC. It flowers in about 13 weeks (one source lists 12–14 weeks).
Learn to grow Red Haze: Indoor & Outdoor Growing course, $199
- Type
- Sativa
- THC
- About 23%20–25% across 2 sources
- Top terpenes
- Linalool floral, lavender
- Caryophyllene peppery, spicy
- Limonene citrus
- Lineage
- Neville's Haze × South American
- Flowering
- About 13 weeks12–14 weeks · 1 source
3 sources for this profile
- Leafly public strain listing
- Weedmaps public strain listing
Grow facts
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 Red Haze
The grow facts a breeder or public strain listing gives for Red Haze.
- Flowering time
- About 13 weeks12–14 weeks · 1 source. Slower than 99% of strains with a listed time
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 Red Haze: Indoor & Outdoor Growing course, $199
About Red Haze
Red Haze is a sativa cannabis strain. Public lineage data lists it as a cross of Neville's Haze and South American.
How strong is Red Haze?
Public listings give Red Haze a THC level of 25%, which is in the upper third of our dataset. Compared with all strains in our research dataset that have their own THC figure, it is higher than roughly 84% of them. Potency varies by grower, batch and lab, so read these numbers as typical values, not guarantees.
Red Haze aroma, flavor and terpenes
Its most-reported flavor notes are woody and berry. Its top listed terpenes are linalool (floral, lavender-like), caryophyllene (peppery, spicy) and limonene (citrus). Linalool is the lead terpene for about 1% of the high-confidence strains in our dataset, so it is a less common lead. Terpenes shape smell and taste; their levels change from batch to batch.
Reported effects of Red Haze
People who have tried Red Haze most often report feeling energetic, creative, focused, uplifted and euphoric. These are user reports, not promises. Effects differ from person to person and depend on dose, setting and tolerance.
Growing Red Haze: what the data says
Flowering is listed at about 12–14 weeks indoors. That is longer than the 8–9 weeks listed for most strains. Grow where home cultivation is legal, and follow your state rules.
Red Haze family tree
Its parents, from published lineage.
This strain
Red HazeSativa · 20–25% THC · 12–14 wk
Similar strains
Matched on shared parents, top terpenes, type and THC. Never on medical use.
Colombian Gold
- THC
- 17–20%
- Flowering
- 10–14 wk
- Terpene
- Limonene
- Effect
- Creative
- Difficulty
- Intermediate
Great White Shark
aka White Shark
- THC
- 14–21%
- Flowering
- 8–10 wk
- Terpene
- Myrcene
- Effect
- Happy
- Difficulty
- Intermediate
Miami Haze
- THC
- 18–30%
- Flowering
- 9–11 wk
- Terpene
- Pinene
- Effect
- Energetic
Where to buy
Find licensed dispensaries in your state
Only state-licensed stores, checked against official license lists.
Grow it
Flowering time, height and difficulty from the sources, then the full method in the Growing course.
