Sweet ZZ Auto was bred to raise the bar for autoflowers on yield, effect and flavor all at once. Royal Queen Seeds crossed Sweet ZZ with Diesel Auto, producing a 60% Indica / 35% Sativa / 5% Ruderalis hybrid that is simple enough for beginners yet productive enough to impress veterans.
There is no need to change the light schedule. Keep the lamps at 18/6 or 20/4 and the plant transitions to bloom on its own, reaching harvest roughly 65 to 75 days after germination. That short cycle allows multiple outdoor harvests in a single season and fast turnover in the grow tent.
Indoor plants stay at 2 to 4 feet (60–120 cm), and outdoor plants reach 3 to 4 feet (90–120 cm). Expect 12 to 14 oz/m² (340–395 g/m²) indoors and 3 to 6 oz/plant (85–170 g/plant) outdoors, a strong showing for such a fast plant.
Royal Queen Seeds’ lab analysis confirmed THC at 18%, with caryophyllene leading the terpene profile.
Candy Flavor, Terpenes and a Deep Stone
Sweet ZZ Auto keeps the sugary, fruity character of its photoperiod parent: candy, sweet citrus and ripe fruit, layered with spicy, peppery depth from caryophyllene, hoppy notes from humulene and a lemony lift from limonene. It tastes like a lemon drop rolled in cracked pepper, sweet with a little bite.
The effect is strongly stoned and body-focused. A heavy, long-lasting wave of relaxation sets in, perfect for zoning out with friends, ordering food and putting on a good film. Save it for evenings with nothing left on the agenda.
Growing Sweet ZZ Auto Seeds
Sow directly into final containers and give seedlings gentle light and moderate feeding. The flowering phase lasts 45 to 50 days (about 6.5 to 7 weeks), and the whole run takes 65 to 75 days from germination. Light LST in weeks two to four widens the canopy and boosts the number of productive tops.
Outdoors, Sweet ZZ Auto handles regions with short summers well. Plant after the last frost for a summer harvest, then sow again for a second crop before fall. Its compact frame also makes it discreet on balconies and in small backyard spaces.
Sweet ZZ Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Sweet ZZ x Diesel Auto |
| Indica/Sativa | 60% Indica / 35% Sativa / 5% Ruderalis |
| THC | Up to 18% |
| CBD | Low |
| Effect | Stoned |
| Flavor | Candy, citrus, fruity |
| Indoor yield | 12 to 14 oz/m² (340–395 g/m²) |
| Outdoor yield | 3 to 6 oz/plant (85–170 g/plant) |
| Seed to harvest | 65 to 75 days from germination (9 to 11 weeks); flowering 45 to 50 days |
| Height | Indoors 2 to 4 feet (60–120 cm); outdoors 3 to 4 feet (90–120 cm) |
| Climate | Short summers |
| Best cultivation technique | LST, Sea of Green, 18/6 or 20/4 light |
FAQ
How fast is Sweet ZZ Auto?
It goes from germination to harvest in 65 to 75 days, roughly 9 to 11 weeks, with a flowering phase of 45 to 50 days.
What are the genetics of Sweet ZZ Auto?
Royal Queen Seeds crossed Sweet ZZ with Diesel Auto, resulting in 60% indica, 35% sativa and 5% ruderalis genetics.
Which terpenes dominate Sweet ZZ Auto?
Caryophyllene is the most abundant terpene, adding spice and pepper. Humulene adds hoppy notes and limonene contributes a lemony touch.
How much THC does Sweet ZZ Auto have?
Royal Queen Seeds lists THC at up to 18%, confirmed in their lab testing. The effect is heavily stoned and body-focused.
Do I need to switch the lights to 12/12 for Sweet ZZ Auto?
No. It flowers automatically. Run 18/6 or 20/4 from seed to harvest.
What yield does Sweet ZZ Auto produce?
Expect 12 to 14 oz/m² (340–395 g/m²) indoors and 3 to 6 oz/plant (85–170 g/plant) outdoors.
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