The Official Cannabis Independent strain guides
The Official Cannabis collection · sheet 03No 03 · Purple Urklepurpleurkle.com
Purple Urkle stamp, No. 03 in the Official Cannabis collection: a face in a bucket hat and round glasses on indigo

Catalogue entry · lab-tested · every claim cited

Purple Urkle strain

Purple Urkle is a classic California indica, described by most sources as a selected phenotype of Mendocino Purps and usually dated to the late 1980s.1,2,3,4 In only 35 state lab tests, a small sample, its flower had a median total THC of 19.00%, with the middle half of results between 15.98% and 22.42%.5 CBD is negligible: none of the 27 tests that reported CBD reached 1%.5

The Night Owl perched on a redwood branch beside a small telescope and a lantern, under a crescent moon and hanging grapes
Postmaster: The Night OwlThe fallen redwood, after moonrise. If Purple Urkle is your strain, read your sign →
Design
A face in a bucket hat and round glasses on indigo · No 03 in the collection
Type
Indica (Leafly); AllBud lists 70% indica, and Weedmaps tags it a hybrid1,2,3
Parents
A selected phenotype of Mendocino Purps, by most accounts1,2,3
Origin
California, late 1980s by most accounts (Weedmaps says Northern California); a minority account says West Hollywood, mid-1990s1,3,6
THC (lab tests)
19.00% median; 15.98%–22.42% middle half; only 35 tests in 5 states (small sample)5
CBD (lab tests)
8 of the 27 tests that reported CBD found none, and the highest result was 0.29%5
Terpenes (lab tests)
No profile: none of the 35 matched tests report individual terpene values5
Flavor (user reports)
Grape, berry, earthy (Weedmaps); grape, plum, berry (Leafly’s top flavors)1,2
Effects (user reports)
Sleepy, relaxed, hungry (Leafly’s top effects)2
Flowering time
About 7–9 weeks indoors for seed versions (55–64 days where listings give days), the same band Leafly shows2,7,8,9

The guide one plate per section

Quick answers

Is Purple Urkle indica or sativa?

An indica. Leafly classifies it as one and rates it mostly calming, AllBud lists 70% indica and 30% sativa, and several feminized seed versions are sold as 80% indica. Weedmaps tags it a hybrid but describes an old-school Northern California indica.1,2,3,7,8

Is Purple Urkle strong?

Its lab results sit toward the lower end of the strains we track, though from a small sample: the median total THC across only 35 state lab tests was 19.00%, 8.6% of tests reached 25% or more, and 21 of the other 28 strains in our dataset have a higher median.5 Strain databases list 19% (Leafly), 18–21% (AllBud) and 18–26% (Weedmaps).1,2,3

What strain is Purple Urkle?

A California indica that most sources describe as a selected phenotype of Mendocino Purps, a purple strain from Mendocino County. AllBud dates it to the late 1980s and calls it a clone-only strain kept for California dispensaries.1,2,3,10

What does Purple Urkle taste like?

Grape first. On Weedmaps, 50% of flavor reports say grape, 26% berry and 24% earthy, and Leafly’s top flavors are grape, plum and berry. Westword likened well-grown flower to skunky grape juice.1,2,11

Is Purple Urkle the parent of Granddaddy Purple?

Accounts differ. Weedmaps and AllBud list Granddaddy Purple as Purple Urkle × Big Bud, while Leafly gives Mendo Purps × Skunk × Afghanistan and mentions Big Bud × Purple Urkle only as others’ claim. Ken Estes, who popularized Granddaddy Purple in 2003, told Leafly the plant he started from was called Purple Medicine; he does not mention Purple Urkle.12,13,14,15

Where can I buy Purple Urkle?

In few places, going by Weedmaps. On Oct 3, 2026, 34 stores and deliveries listed Purple Urkle flower across the 27 US markets we checked, 10 of them around Los Angeles; 16 markets had none.16

How strong Purple Urkle tests

19.00%median total THC (small sample)
15.98%–22.42%middle half of tests
35lab tests, 5 states
10testing labs

THC in 35 lab tests of Purple Urkle flower

0 10 6–7% THC: 0 tests 7–8% THC: 1 tests 8–9% THC: 0 tests 9–10% THC: 0 tests 10–11% THC: 0 tests 11–12% THC: 1 tests 12–13% THC: 1 tests 13–14% THC: 1 tests 14–15% THC: 1 tests 15–16% THC: 5 tests 16–17% THC: 1 tests 17–18% THC: 1 tests 18–19% THC: 5 tests 19–20% THC: 3 tests 20–21% THC: 3 tests 21–22% THC: 2 tests 22–23% THC: 2 tests 23–24% THC: 3 tests 24–25% THC: 2 tests 25–26% THC: 1 tests 26–27% THC: 1 tests 27–28% THC: 1 tests 28–29% THC: 0 tests 29–30% THC: 0 tests 30–31% THC: 0 tests 31–32% THC: 0 tests 32–33% THC: 0 tests 33–34% THC: 0 tests 8%12%16%20%24%28%32% median 19.00% Total THC, % by weight
Each bar counts tests in a one-point THC band; the shaded band is the middle half of results. 35 tests of Purple Urkle flower from 5 states, 2016–2023. Small sample: treat as indicative.5

Full lab data: by year, by state, terpenes and the downloadable dataset →

Well known, rarely stocked

Purple Urkle is not on the current best-seller lists we checked. It is absent from Leafly’s best-selling strains of 2025, where Granddaddy Purple ranked #2 nationally, and it is not the top seller in any of the 23 adult-use states in The Marijuana Herald’s September 2026 list.17,18

Its reputation is older. In a 2019 profile, Westword called it a fixture of Denver’s dispensary scene since the early medical days and one of the originals of the syrupy grape smell later strains took on; its Leafly page carries 1,346 ratings, and Leafly’s explainer on purple cannabis names it among strains known for their color.2,11,19

Store menus show how scarce it is now. On Oct 3, 2026, 34 stores and deliveries listed Purple Urkle flower on Weedmaps across 27 US markets, against 850 for Blue Dream in the same markets.16 It leaves a thin trail in state lab data too: only 35 matched flower tests, against 512 for Granddaddy Purple.5

Purple Urkle next to similar strains

Lab-tested THC: Purple Urkle and the 6 strains on our comparison pages

16% 20% 24% Blueberry Blueberry: median 21.91%, middle half 18.40%–25.23%, 411 tests 21.9% n=411 Sour Diesel Sour Diesel: median 21.68%, middle half 19.00%–25.30%, 1,071 tests 21.7% n=1,071 Northern Lights Northern Lights: median 20.03%, middle half 17.28%–22.05%, 406 tests 20.0% n=406 Blue Dream Blue Dream: median 19.96%, middle half 17.62%–22.37%, 2,118 tests 20.0% n=2,118 Purple Urkle Purple Urkle: median 19.00%, middle half 15.98%–22.42%, 35 tests 19.0% n=35 Grape Ape Grape Ape: median 18.42%, middle half 15.37%–21.25%, 202 tests 18.4% n=202 Granddaddy Purple Granddaddy Purple: median 17.87%, middle half 15.00%–21.55%, 512 tests 17.9% n=512 Median total THC (dot) and middle half of tests (bar)
Same state lab dataset and matching rules for every strain.5 See the comparisons.

Where it is sold

MarketStoresMenu itemsMedian eighth
Los Angeles, CA 10 13 $20.00 (n=2)
Phoenix, AZ 5 5 $30.00 (n=1)
New York, NY 4 4 $35.00 (n=1)
Oklahoma City, OK 4 4 $20.00 (n=1)
Anchorage, AK 2 7 $20.00 (n=6)
Seattle, WA 2 3 $26.00 (n=2)

Stores within 50 miles listing Purple Urkle flower on Weedmaps, Oct 3, 2026.16

All 27 markets, Germany and how we counted →

Genetics at a glance

Family tree

  • Mendocino PurpsMendocino County, California; reported as a selected phenotype

Purple Urkle

  • Granddaddy Purple (disputed)Purple Urkle × Big Bud
  • Orange SherbertOrange Cream × Purple Urkle × Cherry Pie
  • GobbstopperPurple Urkle × Sin City Kush
  • Rip City PurpsGobbstopper × Purple Urkle (backcross)
  • Sour UrkleSour Diesel × Purple Urkle
  • White UrklePurple Urkle × The White
  • Mendo Purple Urkle 3.5Mendo Purps #35 × Purple Urkle
Parent and offspring as reported by Leafly, Weedmaps, AllBud and SeedFinder; the Granddaddy Purple link is disputed.2,12,13,14,20,21,22,23,24,25

A Mendo Purps phenotype? A Granddaddy Purple parent? The full genetics page →

The Night Owl perched on a redwood branch beside a small telescope and a lantern, under a crescent moon and hanging grapes

The Purple Urkle universe

Your sign: The Night Owl

If Purple Urkle is your strain, you keep late hours on purpose, because the best stars come out after everyone else is asleep. Meet the Night Owl.

The issue printed on demand, nothing on sale yet

The whole issue →

Sources

  1. Weedmaps, Purple Urkle strain page. Accessed Oct 3, 2026.
  2. Leafly, Purple Urkle strain information. Accessed Oct 3, 2026.
  3. AllBud, Purple Urkle marijuana strain information and reviews. Accessed Oct 3, 2026.
  4. CannaConnection, Purple Urkle strain information. Accessed Oct 3, 2026.
  5. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 3, 2026.
  6. The Cannigma, Purple Urkle (2020-06-17). Accessed Oct 3, 2026.
  7. SeedFinder, Purple Urkle (Zamnesia). Accessed Oct 3, 2026.
  8. SeedFinder, Purple Urkle (Pyramid Seeds). Accessed Oct 3, 2026.
  9. SeedFinder, Purple Urkle (United Cannabis Seeds). Accessed Oct 3, 2026.
  10. Leafly, Mendocino Purps strain information. Accessed Oct 3, 2026.
  11. Westword, Why Colorado tokers love Purple Urkle (2019-01-02). Accessed Oct 3, 2026.
  12. Weedmaps, Granddaddy Purple strain page. Accessed Oct 3, 2026.
  13. AllBud, Granddaddy Purple marijuana strain information and reviews. Accessed Oct 3, 2026.
  14. Leafly, Granddaddy Purple strain information. Accessed Oct 3, 2026.
  15. Leafly, Meet the daddy of Granddaddy Purple (2026-07-21). Accessed Oct 3, 2026.
  16. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 3, 2026. Accessed Oct 3, 2026.
  17. Leafly, Best-selling weed strains of 2025. Accessed Oct 3, 2026.
  18. The Marijuana Herald, The top-selling marijuana strain in all 23 states with legal recreational sales (2026-09). Accessed Oct 3, 2026.
  19. Leafly, How does cannabis get its color? Here's why some strains turn purple (2020-07-28). Accessed Oct 3, 2026.
  20. Leafly, Orange Sherbert strain information. Accessed Oct 3, 2026.
  21. Leafly, Gobbstopper strain information. Accessed Oct 3, 2026.
  22. Leafly, Rip City Purps strain information. Accessed Oct 3, 2026.
  23. Leafly, Sour Urkle strain information. Accessed Oct 3, 2026.
  24. Leafly, White Urkle strain information. Accessed Oct 3, 2026.
  25. SeedFinder, Mendo Purple Urkle 3.5 (CSI Humboldt). Accessed Oct 3, 2026.