Watermelon Automatic by Royal Queen
A autoflowering cross of Watermelon × Ruderalis, Watermelon Automatic — released by Royal Queen — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 60 days from sprout. Reported THC is 20%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Watermelon Automatic grows against.
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Similar strains
| Breeder | Royal Queen |
|---|---|
| Type | 75% indica, 20% sativa |
| Flowering time | ±60 days |
| THC | 20% |
| Environment | Outdoors |
| Lineage | Watermelon × Ruderalis |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
🧬 Explore the family: Watermelon · Ruderalis
Ancestry Pedigree
Royal Queen Seeds
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Growing Watermelon Automatic: what to expect
Because Watermelon Automatic is an autoflower it runs on age, not photoperiod: keep it under 18–20 hours of light from sprout to harvest, start in its final pot, and go easy on training after week 3 — autos never pause to recover. Growers familiar with Watermelon or Ruderalis will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Watermelon Automatic FAQ
How long does Watermelon Automatic take to flower?
Watermelon Automatic typically flowers in around 60 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Watermelon Automatic an indica or a sativa?
Watermelon Automatic is listed as 75% indica, 20% sativa (autoflowering).
What are the parents of Watermelon Automatic?
Watermelon Automatic was bred from Watermelon × Ruderalis by Royal Queen.
How strong is Watermelon Automatic?
Reported THC for Watermelon Automatic is 20%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does Watermelon Automatic like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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