13 Dawgs
- THC
- 13–21%
- Effect
- Uplifted
Blue Monster Holk strain
Bred by Holk Seeds · Blueberry × G13
Strain facts
Checked Aug 13, 2026 · 3 sources
Blue Monster Holk is an indica from Holk Seeds, bred from Blueberry and G13. Its THC is about 18%, milder than 76% of the 2,337 strains in our database that list THC.
Learn to grow Blue Monster Holk: Indoor & Outdoor Growing course, $199
- Type
- Indica
- THC
- About 18%1 source
- Top terpenes
- Myrcene earthy, musky
- Caryophyllene peppery, spicy
- Lineage
- Blueberry × G13
- Breeder
- Holk Seeds
3 sources for this profile
- Leafly public strain listing
- Weedmaps public strain listing
- Breeder information: Holk Seeds
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 Aug 13, 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 Blue Monster Holk
The grow facts a breeder or public strain listing gives for Blue Monster Holk.
- Outdoor harvest
- SeptemberEarlier than 77% of strains with a listed month
Listed outdoor harvest (northern hemisphere)
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Source: CTU strain dataset, verified Oct 2026. Percentages compare with every strain in our database that lists the same fact.
Learn to grow Blue Monster Holk: Indoor & Outdoor Growing course, $199
About Blue Monster Holk
Blue Monster Holk is listed in public strain databases as an indica credited to Holk Seeds. Public lineage data lists it as a cross of Blueberry and G13.
How strong is Blue Monster Holk?
Public listings give Blue Monster Holk a THC level of 18%, which is in the lower third of our dataset. 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.
Blue Monster Holk aroma, flavor and terpenes
Its most-reported flavor notes are grape and berry. The terpenes listed most often are myrcene (earthy, musky) and caryophyllene (peppery, spicy). 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 Blue Monster Holk
Commonly reported effects: relaxed, hungry, euphoric, happy and focused. These are user reports, not promises. Effects differ from person to person and depend on dose, setting and tolerance.
Growing Blue Monster Holk: what the data says
Outdoors in the Northern Hemisphere, harvest is listed for September. Grow where home cultivation is legal, and follow your state rules.
Blue Monster Holk family tree
Its parents, from published lineage.
This strain
Blue Monster HolkIndica · 18% THC
Similar strains
Matched on shared parents, top terpenes, type and THC. Never on medical use.
Avalon
- THC
- 18.7–23%
- Flowering
- 6.5 wk
- Effect
- Uplifted
Berry Bomb
- THC
- 15–20%
- Flowering
- 6–8 wk
- Terpene
- Myrcene
- Effect
- Relaxed
- Difficulty
- Beginner
Berry Chill
- THC
- 16–22%
- Flowering
- 8–9 wk
- Effect
- Focused
- Difficulty
- Intermediate
Indica strainsMyrcene strainsGrape strainsStrains bred from Blueberry
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.
