Canna Wreck
- THC
- 5–12% · CBD 15–20%
- Flowering
- 7–9 wk
- Effect
- Energetic
Dr. Who strain
Bred by Homegrown Natural Wonders · Timewreck × Mad Scientist
Strain facts
Checked Oct 21, 2026 · 6 sources
Dr. Who is a hybrid that's easy to grow. It was bred by Homegrown Natural Wonders from Timewreck and Mad Scientist. Its THC is about 23% (sources say 21–26%), higher than 68% of the 2,347 strains in our database that list THC. It flowers in about 8.5 weeks (sources say 8–9 weeks).
Learn to grow Dr. Who: Indoor & Outdoor Growing course, $199
- Type
- Hybrid
- THC
- About 23%21–26% across 3 sources
- Top terpenes
- Myrcene earthy, musky
- Pinene pine
- Caryophyllene peppery, spicy
- Lineage
- Timewreck × Mad Scientist
- Breeder
- Homegrown Natural Wonders
- Grow difficulty
- Beginner1 source
- Flowering
- About 8.5 weeks8–9 weeks across 2 sources; the breeder lists 8.5 weeks
6 sources for this profile
- Leafly public strain listing
- Weedmaps public strain listing
- Breeder information: Homegrown Natural Wonders
Grow facts
- SeedFinder (breeder listing: Homegrown Natural Wonders) Flowering and grow setting
- AllBud (strain database) THC
- Crop King Seeds (seed bank) CBD, difficulty, flowering, THC, yield indoor and yield outdoor
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 Dr. Who
The grow facts a breeder or public strain listing gives for Dr. Who.
- Flowering time
- About 8.5 weeks8–9 weeks across 2 sources; the breeder lists 8.5 weeks. Faster than 49% of strains with a listed time
- Yield indoor
- About 500 g/m²1 source
- Yield outdoor
- About 850 g per plant700–1,000 g per plant (25–35 oz) · 1 source
- Difficulty
- Beginner1 source. One of 452 beginner-rated strains
- Grow setting
- Indoor and outdoor1 source
Flowering window (weeks after the switch to 12/12)
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
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- 14
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 Dr. Who: Indoor & Outdoor Growing course, $199
About Dr. Who
Dr. Who is listed in public strain databases as a hybrid credited to Homegrown Natural Wonders. Its listed parents are Timewreck and Mad Scientist.
Dr. Who THC level
Dr. Who’s THC is about 23% (sources say 21–26%), higher than 68% of the 2,347 strains in our database that list THC. Potency varies by grower, batch and lab, so read these numbers as typical values, not guarantees.
What does Dr. Who smell and taste like?
Flavor notes reported for Dr. Who: earthy, citrus and sweet. Its top listed terpenes are myrcene (earthy, musky), pinene (pine) 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 Dr. Who
People who have tried Dr. Who most often report feeling relaxed, happy, uplifted, euphoric and focused. These are user reports, not promises. Effects differ from person to person and depend on dose, setting and tolerance.
Dr. Who family tree
Its parents, from published lineage.
This strain
Dr. WhoHybrid · 21–26% THC · 8–9 wk
Similar strains
Matched on shared parents, top terpenes, type and THC. Never on medical use.
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- THC
- 16%
- Terpene
- Limonene
- Effect
- Relaxed
Professor Chaos
aka Prof Chaos, Chaos
- THC
- 12–24%
- Flowering
- 8–9 wk
- Terpene
- Caryophyllene
- Effect
- Focused
- Difficulty
- Beginner
Quantum Kush
- THC
- 20–27%
- Flowering
- 8.5 wk
- Terpene
- Limonene
- Effect
- Uplifted
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.
