LSD-25 Auto is a striking purple autoflower with a loud, gassy personality. Fast Buds bred it from Original Skunk and Auto Purple Kush from Buddha Seeds, then refined the cross into a stable F5 feminized line selected for deep coloration, fuel-driven terpenes, and steady resin production. It is a favorite within the Fast Buds team itself.
The genetic split is 65% Indica / 35% Sativa, and THC reaches up to 21% with CBD under 1%. Even with Indica leanings, the high is known for a heady, cerebral twist that can feel like a time-warp, so first-timers should go slowly.
This is a rapid producer: LSD-25 Auto needs just 9-10 weeks from seed to harvest, with no light-schedule change required. Run 18/6 or 20/4 the whole way. Fast Buds rates her in the XL size class at 70-120 cm (28-47 in), with 400-500 g/m² (1.3-1.6 oz/ft²) indoors and 50-250 g (2-9 oz) per plant outdoors.
She packs on size and weight in a short time, which makes her a great fit for growers who need a fast turnaround, including first-time growers.
Purple Buds, Diesel, and Smoked Wood
As flowering progresses, the dense, tightly packed buds darken and take on rich purple tones under a thick, uniform layer of trichomes. The color is more than looks: it carries over into extracts, making LSD-25 Auto a go-to choice for anyone who wants to press purple-tinted concentrates.
The aroma is bold and grounded: diesel and fuel up front, red wine and berry sweetness in the middle, and smoked, burnt wood underneath, all resting on an earthy base. Fans of loud, gassy terpenes will find a lot to like, and the room smells memorable long before harvest.
In terms of effect, reports center on relaxed and happy, with creative, hungry, and uplifted also appearing. The cerebral side shows up as a mind-bending, slightly psychedelic headspace, while the Indica body keeps everything mellow. Novices should approach it with respect.
Growing LSD-25 Auto
Plants form a strong central cola with supportive side branching and stay uniform from one to the next. Stable conditions bring out the deepest colors and the most consistent yields, and she performs well in indoor and mixed-light environments as well as outdoors and in greenhouses. A light round of LST evens the canopy, and good airflow keeps the dense purple buds healthy late in bloom.
LSD-25 Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Original Skunk x Auto Purple Kush (Buddha Seeds), F5 |
| Indica/Sativa | 65% Indica / 35% Sativa |
| THC | Up to 21% |
| CBD | Less than 1% |
| Effect | Cerebral, mind-bending headspace with mellow body relaxation |
| Flavor | Diesel, berry, red wine, smoked wood, earth |
| Indoor yield | 400-500 g/m² (1.3-1.6 oz/ft²) |
| Outdoor yield | 50-250 g/plant (2-9 oz/plant) |
| Seed to harvest | 9-10 weeks |
| Height | 70-120 cm (28-47 in), XL size class |
| Climate | Indoor, outdoor, greenhouse, and mixed-light setups |
| Best cultivation technique | Stable conditions, light LST, good airflow |
FAQ
What are the genetics of LSD-25 Auto?
Fast Buds crossed Original Skunk with Auto Purple Kush from Buddha Seeds and stabilized it as an F5 feminized autoflower.
Does LSD-25 Auto turn purple?
Yes. As flowering progresses, the buds often darken into rich purple tones, which also makes it popular for purple extracts.
How long does LSD-25 Auto take to grow?
About 9-10 weeks from seed. No 12/12 switch is needed, so you can run 18/6 or 20/4 throughout.
What does LSD-25 Auto smell like?
Diesel and fuel, red wine and berry sweetness, smoked wood, and an earthy base.
Is LSD-25 Auto suitable for first-time growers?
Yes. It grows quickly, stays uniform, and packs on weight in a short time, which makes it a good fit for new growers who want a fast turnaround.
How much does LSD-25 Auto yield?
Indoors, 400-500 g/m² (1.3-1.6 oz/ft²). Outdoors, 50-250 g (2-9 oz) per plant.
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