Watermelon Zum Zum
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Watermelon Zum Zum

Sativa-dominant
Indica 30 %Sativa 70 %

Watermelon Zum Zum is a cross of The Original Z and Adonai attributed to Dying Breed Seeds; its selection #3 is a parent of Watermelon Zkittlez.

Research as of 11/07/2026

Anyone expecting a distinct watermelon aroma from the name will not find it confirmed consistently in the user reports on Watermelon Zum Zum: some consumers describe the flavor as generally fruity or berry-forward. The hybrid is attributed to Dying Breed Seeds and traces back to a cross of The Original Z and Adonai. Several breeders have crossed it further, including Dying Breed Seeds itself, which bred Watermelon Zkittlez from a selection designated #3.

Community Experiences:

Relaxation is the common denominator in the reports read; beyond that, the accounts diverge. Some consumers describe a euphoric, uplifted mood and become talkative, while others notice mainly an effect in the body that can turn into drowsiness. A rapid onset is mentioned several times, a long-lasting effect once, and one further report describes a tingling in the body. Dry mouth appears as an accompanying effect.

Consumers describe the smoke as mild and the buds as compact and slow-burning. Observations from cultivation come from individual growers: one reports strong stretch up to the tent ceiling, several thick colas and very sticky buds, another dense, fruity-smelling colas.

Genetics and Origin:

Strain descriptions list The Original Z from Dying Breed Seeds and Adonai as parents. The Original Z is another name for Zkittlez, whose lineage is given as (Grape Ape × Grapefruit) × unknown; UKHTA 420 accordingly names the parent Zkittlez. Adonai combines Russian Kush in the LA Cut, Silver Tooth and Sweet Tooth. The original version is listed only as a clone.

One strain description deviates from this: it classifies Watermelon Zum Zum as sativa-dominant with 70 % sativa and 30 % indica and assumes descent from Watermelon Zkittlez. The other pedigrees show the reverse relationship, with Watermelon Zkittlez as an offspring. As the second parent of this cross, the sources name OG Eddy in some cases and Zkittlez in others.

Further documented descendants are:

  • Lemon Verzace from Lemon Adonai × Watermelon Zum Zum, by Massive Creations; one source also lists the cross under Dying Breed Seeds
  • Chubby Melon (× Raskal Berries) and Zummy Bearz (× Blue Power), both by Sin City Seeds
  • Blue Melon by GLK Genetics, a multi-stage cross with Wedding Cake and Blue Z, among others
  • JJJ by Legacy Genetics, crossed via Lemon Tree and Wildberry

Versions from Different Breeders:

Alongside the clone version from Dying Breed Seeds, there is an S1 line from UKHTA 420, created by selfing one of the breeder's own clones and available only in feminized form. For this version UKHTA 420 gives a flowering time of 9 weeks and a yield of 450 to 500 g/m²; the breeder names indoor, outdoor and greenhouse as growing locations. The breeder describes the buds as medium-sized and densely coated with resin and rates the odor intensity at 2 out of 5. The breeder recommends SCROG and hydroponics. The effect is described as activating, with a possible dampening aftereffect. UKHTA 420 has also crossed the line further with Watermelon ZumZum x Fruit Gum.

Aroma and Flavor:

UKHTA 420 describes a watermelon aroma for its version and a rarer phenotype with added mango. Other strain descriptions name citrus, pineapple and a sour note alongside sweetness, and floral and spicy notes in the scent; another lists berries, citrus and tree fruit. Limonene, myrcene and linalool are named as dominant terpenes in one strain description.

THC Content:

The figures from strain descriptions range from 17 to 21 % and 20 % THC respectively, one of them additionally stating 1 % CBG. For the S1 line, UKHTA 420 gives a THC potential of 24 %.

This article is for informational purposes only and is not a substitute for medical or therapeutic advice. If you have any health-related questions, please consult a doctor or another qualified professional.

Effects & aroma

From reviews and experience reports — subjective, not a medical statement

Reported as positive
sleepy
energetic
relaxed
Reported side effects
dry mouth
fatigue
Aroma & flavor
Mango Tree fruit Spicy

No reviews yet — information from the strain description. Rate the strain to see shares.

Cannabinoids & terpenes

Levels vary by batch, phenotype and cultivation — values are indicative

THC
17–21 %
0 %35 %
CBG
1 %
0 %10 %
Terpene profile
  • #1
    LimoneneCitrus
  • #2
    MyrceneHerbs
  • #3
    LinaloolFlowers

Cultivation

Indicative values from breeder data and grow reports — varies by phenotype and setup

Yield & height

One grow report describes strong stretch up to the tent ceiling, without a factor.

Difficulty, environment & climate
Indoor
suitable
Morphology
Bud structure
Dense

Grow reports: several thick colas, very sticky buds, dense, fruity-smelling colas; buds compact and slow-burning.

Training

SCROG and hydroponics are recommended only by UKHTA 420 for its own S1 version (see same_name_versions).

Genetics & origin

Origin
Cross
The Original Z (Zkittlez) × Adonai
Type
Sativa-dominant
Available as seeds
Feminized
Original breeder
Dying Breed Seeds

Versions by different breeders

Several breeders sell their own versions under this name. Each figure comes from the respective breeder.

Dying Breed SeedsWatermelon Zum Zum
Original

Listed as a clone-only strain; cross of The Original Z × Adonai. No breeder data on flowering time, yield, height or cannabinoids documented. According to the entry, suitable for indoor cultivation.

UKHTA 420Watermelon Zum Zum S1
Reproduction
Feminized
Flowering
9 weeks
Yield indoor
450–500 g/m²
THC
24 %

S1 by selfing the “UKHTA cut” of the Dying Breed Seeds strain (parentage given by the breeder: ZkittleZ × Adonai); feminized only; indoor, outdoor and greenhouse; medium-sized, heavily resin-coated buds; watermelon aroma, rarer phenotype with mango; odor intensity 2 out of 5; breeder recommends SCROG and hydroponics; effect according to the breeder activating with possible dampening aftereffect; THC given as “potential”.

Community

7 grow and experience reports reviewed Community reports
Consensus

Relaxation is named consistently across the reports; smoke mild, buds dense or compact; flavor fruity.

Divergent reports

Some of the reports describe a euphoric, uplifted and talkative mood, others a body-focused effect extending to drowsiness. Individual reports perceive berry or generally fruity notes rather than watermelon. Dry mouth is named as an accompanying effect.

Grow diaries with this strain

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Similar strains

Related genetics, same dominant terpene, similar effects and aroma — excluding direct parents and descendants

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