100 OG Kush
- THC
- 20–26%
- Flowering
- 7–9 wk
- Terpene
- Myrcene
- Effect
- Creative
Madman OG strain
Bred by Ocean Grown Genetics · OG Kush × LA Confidential
Strain facts
Checked Oct 21, 2026 · 4 sources
Madman OG is a hybrid from Ocean Grown Genetics, bred from OG Kush and LA Confidential. Its THC is about 19% (sources say 18–19%), milder than 66% of the 2,347 strains in our database that list THC. It flowers in about 9 weeks (one source lists 8–10 weeks).
Learn to grow Madman OG: Indoor & Outdoor Growing course, $199
- Type
- Hybrid
- THC
- About 19%18–19% across 2 sources
- Lineage
- OG Kush × LA Confidential
- Breeder
- Ocean Grown Genetics
- Flowering
- About 9 weeks8–10 weeks · 1 source
4 sources for this profile
- Leafly public strain listing
- Weedmaps public strain listing
- Breeder information: Ocean Grown Genetics
Grow facts
- AllBud (strain database) CBD and 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 Madman OG
The grow facts a breeder or public strain listing gives for Madman OG.
- Flowering time
- About 9 weeks8–10 weeks · 1 source. Slower than 51% 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 Madman OG: Indoor & Outdoor Growing course, $199
About Madman OG
Madman OG is listed in public strain databases as a hybrid credited to Ocean Grown Genetics. The parent strains on record are OG Kush and LA Confidential.
How strong is Madman OG?
Public listings give Madman OG a THC level of 18%, which is below most strains we track. Compared with all strains in our research dataset that have their own THC figure, it is higher than roughly 23% of them. Potency varies by grower, batch and lab, so read these numbers as typical values, not guarantees.
Madman OG aroma, flavor and terpenes
Flavor notes reported for Madman OG: coffee, pine, woody and earthy.
Reported effects of Madman OG
People who have tried Madman OG most often report feeling giggly, relaxed, sleepy, happy and euphoric. These are user reports, not promises. Effects differ from person to person and depend on dose, setting and tolerance.
Growing Madman OG: what the data says
Its listed indoor flowering time is 8–10 weeks. Grow where home cultivation is legal, and follow your state rules.
Madman OG family tree
Its parents, from published lineage.
This strain
Madman OGHybrid · 18–19% THC · 8–10 wk
Similar strains
Matched on shared parents, top terpenes, type and THC. Never on medical use.
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.
