Purple Punch Auto is Fast Buds’ autoflower version of a dessert favorite. The breeders paired Purple Punch F2 from Symbiotic Genetics with their own LSD25 Auto, then stabilized the line as an F5 feminized autoflower. Genetically she is 85% Indica / 15% Sativa, with THC up to 24%.
She grows bigger than most indica autos. In Fast Buds’ XXL size class, she reaches 90-150 cm (35-59 inches) and builds a thick canopy. Indoors she yields 450-600 g/m² (1.5-2 oz/ft²), and outdoor plants produce 60-200 g (2-7 oz) each.
As with every autoflower, no light switch is needed. Keep her on 18/6 or 20/4 and she goes from seed to harvest in about 9 weeks.
By the last weeks, the buds turn round and chunky, mixing lime green and deep purple under a heavy coat of frost and bright orange or yellow pistils.
Bakery Terps and a One-Two Effect
Crack a bud and the room smells like a bakery: blueberry muffins, earthy cherry and spicy pastry crust. Extractors seek out this profile because it carries well into rosin and hash.
Growers most often describe the experience as relaxed and happy. It starts with a light, mood-lifting buzz in the head that sparks some creativity, then rolls into a deep, calm body feel that does not knock you flat. A good fit for chilled evenings, post-workout downtime or simply slowing down on a busy day.
Growing Purple Punch Auto
She is tall for an indica-dominant auto, but basic training keeps her in check. Low-stress training opens up the dense canopy and improves airflow, which matters most in late flower when buds swell to their full size.
Indoors, an 18/6 schedule with a solid LED keeps her compact and dense, and good air movement through the canopy protects the thick purple buds late in bloom. Outdoors she yields 60-200 g (2-7 oz) per plant, depending on sun, pot size and season length.
A proper flush near harvest helps bring out the full flavor and the striking mix of reddish purples and lime greens in the finished buds.
Purple Punch Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Purple Punch F2 (Symbiotic Genetics) x LSD25 Auto (F5) |
| Indica/Sativa | 85% Indica / 15% Sativa |
| THC | Up to 24% |
| CBD | Less than 1% |
| Effect | Relaxed, happy, light creative lift |
| Flavor | Blueberry muffin, cherry, spice |
| Indoor yield | 450-600 g/m² (1.5-2 oz/ft²) |
| Outdoor yield | 60-200 g/plant (2-7 oz/plant) |
| Seed to harvest | 9 weeks |
| Height | 90-150 cm (35-59 inches), XXL size class |
| Best cultivation technique | LST to open the canopy and improve airflow |
FAQ
What are the parents of Purple Punch Auto?
Fast Buds crossed Purple Punch F2 from Symbiotic Genetics with its own LSD25 Auto and stabilized the result as an F5 feminized autoflower.
Is Purple Punch Auto indica or sativa?
She is indica-dominant at 85% Indica / 15% Sativa, with a light sativa touch at the start of the high.
How long does Purple Punch Auto take to finish?
About 9 weeks from seed to harvest, under 18/6 or 20/4 light from start to finish.
How tall does she grow?
She is XXL in Fast Buds’ sizing, reaching 90-150 cm (35-59 inches).
What yield can I expect?
Indoors, 450-600 g/m² (1.5-2 oz/ft²). Outdoors, 60-200 g (2-7 oz) per plant.
What does Purple Punch Auto smell like?
Like a bakery: blueberry muffins, earthy cherries and a spicy pastry note.
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