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The Official Cannabis collection · sheet 65No 65 · Watermelon Zvs Grape Ape

Comparison

Watermelon Z vs Grape Ape

Grape Ape is in Watermelon Z’s family tree: Leafly lists The Original Z, one of Watermelon Z’s parents, as Grape Ape’s child.1,2 Leafly users call both sleepy and relaxed, but Grape Ape tastes of grape and berry where Watermelon Z tastes tropical.1,2 Grape Ape tests about the same in state labs: 18.42% median THC across 202 tests, against 18.60% for Watermelon Z from only 63 tests, a small sample.3

Side by side

Watermelon ZGrape Ape
TypeIndica-dominant hybrid per Leafly and Weedmaps; 70% indica per AllBud2,4,5Mostly indica1
LineageThe Original Z × Watermelon per Leafly and Weedmaps; disputed2,4,6Mendocino Purps × Skunk × Afghani1
Median THC (state lab tests)18.60% (63 tests); small sample18.42% (202 tests)
Middle half of THC results15.27%–22.59%15.37%–21.25%
Top terpenes (median)β-Caryophyllene, Limonene, Linalool (22 tests); 21 of them from Nevadaβ-Caryophyllene, α-Pinene, α-Humulene (99 tests)
Leafly’s top effectsSleepy, relaxed, giggly2Sleepy, relaxed, hungry1
FlavorTropical, tree fruit, sweet2Grape, berry, sweet1
Flowering8–9 weeks (Weedmaps)47–8 weeks1

Lab rows come from the same state lab dataset and matching rules for both strains.3

Lab-tested THC: Watermelon Z vs Grape Ape

14% 16% 18% 20% 22% 24% Watermelon Z Watermelon Z: median 18.60%, middle half 15.27%–22.59%, 63 tests 18.6% n=63 Grape Ape Grape Ape: median 18.42%, middle half 15.37%–21.25%, 202 tests 18.4% n=202 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests. Small sample: Watermelon Z has only 63 tests.3

Two generations apart, by Leafly’s account

Leafly’s page for The Original Z names Grape Ape and Grapefruit, plus an undisclosed strain, as its parents; Weedmaps gives Grape Ape × Grapefruit with a possible undisclosed third parent.7,8 In SeedFinder’s account of Dying Breed Seeds’ version, The Original Z is probably a grandparent instead, which would put Grape Ape one generation further back.6,9 Leafly credits Apothecary Genetics and Barney’s Farm with propagating Grape Ape, and SeedFinder lists a Barney’s Farm version of Watermelon Zkittlez too.1,10 Grape Ape has its own guide in the Official Cannabis network at grapeape.com.

Which is easier to find

In Weedmaps snapshots from Oct 4, 2026 (Watermelon Z) and Oct 3, 2026 (Grape Ape), 104 stores within 50 miles of Los Angeles listed Watermelon Z flower on Weedmaps, against 62 stores for Grape Ape; around New York the counts were 16 and 27.11 Most of the Watermelon Z items around Los Angeles were infused flower (95 of 111), which these counts include.11

More comparisons

Sources

  1. Leafly, Grape Ape strain information. Accessed Oct 4, 2026.
  2. Leafly, Watermelon Z (aka Watermelon Zkittlez) strain information. Accessed Oct 4, 2026.
  3. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  4. Weedmaps, Watermelon Zkittlez (aka Wmz, Watermelon Skittles, Watermelon Z) strain page. Accessed Oct 4, 2026.
  5. AllBud, Watermelon Zkittlez marijuana strain information and reviews. Accessed Oct 4, 2026.
  6. SeedFinder, Watermelon Zkittlez (Dying Breed Seeds): strain info and breeder description. Accessed Oct 4, 2026.
  7. Leafly, The Original Z (aka Z) strain information. Accessed Oct 4, 2026.
  8. Weedmaps, Zkittlez (aka Z, Zkittles) strain page. Accessed Oct 4, 2026.
  9. SeedFinder, Watermelon Zum Zum (Dying Breed Seeds): strain info. Accessed Oct 4, 2026.
  10. SeedFinder, Watermelon Zkittlez (Barney’s Farm): strain info and breeder description. Accessed Oct 4, 2026.
  11. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 4, 2026. Accessed Oct 4, 2026. Latest capture Oct 4, 2026.