+Speed Auto by Sweet Seeds
A autoflowering cross of Critical Mass × Speed Devil Nr2 Auto, +Speed Auto — released by Sweet Seeds — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 49 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real +Speed Auto grows against.
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Similar strains
| Breeder | Sweet Seeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±49 days |
| Environment | Outdoors |
| Lineage | Critical Mass × Speed Devil Nr2 Auto |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
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Growing +Speed Auto: what to expect
Because +Speed Auto 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 Critical Mass or Speed Devil Nr2 Auto 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.
+Speed Auto FAQ
How long does +Speed Auto take to flower?
+Speed Auto typically flowers in around 49 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is +Speed Auto an indica or a sativa?
+Speed Auto is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of +Speed Auto?
+Speed Auto was bred from Critical Mass × Speed Devil Nr2 Auto by Sweet Seeds.
What environment does +Speed Auto 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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